Add common test project

- Migrate common and server-side tests
- WIP on view engine test migration

src/Giraffe.Htmx.sln

@@ -15,6 +15,8 @@ Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "Giraffe.Htmx.Common", "Comm
 EndProject
 Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "Giraffe.Htmx.Common.Tests", "Common.Tests\Giraffe.Htmx.Common.Tests.fsproj", "{E261A653-68D5-4D7B-99A4-F09282B50F8A}"
 EndProject
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "Tests", "Tests\Tests.fsproj", "{39823773-4311-4E79-9CA0-F9DDC40CAF6A}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -48,5 +50,9 @@ Global
 		{E261A653-68D5-4D7B-99A4-F09282B50F8A}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{E261A653-68D5-4D7B-99A4-F09282B50F8A}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{E261A653-68D5-4D7B-99A4-F09282B50F8A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{39823773-4311-4E79-9CA0-F9DDC40CAF6A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{39823773-4311-4E79-9CA0-F9DDC40CAF6A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{39823773-4311-4E79-9CA0-F9DDC40CAF6A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{39823773-4311-4E79-9CA0-F9DDC40CAF6A}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal

src/Tests/Common.fs

@@ -0,0 +1,33 @@
+module Common
+
+open Expecto
+open Giraffe.Htmx
+
+/// Tests for the HxSwap module
+let swap =
+    testList "HxSwap" [
+        test "InnerHtml is correct" {
+            Expect.equal HxSwap.InnerHtml "innerHTML" "Inner HTML swap value incorrect"
+        }
+        test "OuterHtml is correct" {
+            Expect.equal HxSwap.OuterHtml "outerHTML" "Outer HTML swap value incorrect"
+        }
+        test "BeforeBegin is correct" {
+            Expect.equal HxSwap.BeforeBegin "beforebegin" "Before Begin swap value incorrect"
+        }
+        test "BeforeEnd is correct" {
+            Expect.equal HxSwap.BeforeEnd "beforeend" "Before End swap value incorrect"
+        }
+        test "AfterBegin is correct" {
+            Expect.equal HxSwap.AfterBegin "afterbegin" "After Begin swap value incorrect"
+        }
+        test "AfterEnd is correct" {
+            Expect.equal HxSwap.AfterEnd "afterend" "After End swap value incorrect"
+        }
+        test "None is correct" {
+            Expect.equal HxSwap.None "none" "None swap value incorrect"
+        }
+    ]
+
+/// All tests for this module
+let allTests = testList "Htmx.Common" [ swap ]

src/Tests/Htmx.fs

@@ -0,0 +1,342 @@
+module Htmx
+
+open System
+open Expecto
+open Giraffe.Htmx
+open Microsoft.AspNetCore.Http
+open NSubstitute
+
+/// Tests for the IHeaderDictionary extension properties
+let dictExtensions =
+    testList "IHeaderDictionaryExtensions" [
+        testList "HxBoosted" [
+            test "succeeds when the header is not present" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isNone ctx.Request.Headers.HxBoosted "There should not have been a header returned"
+            }
+            test "succeeds when the header is present and true" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Boosted", "true")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxBoosted "There should be a header present"
+                Expect.isTrue ctx.Request.Headers.HxBoosted.Value "The header value should have been true"
+            }
+            test "succeeds when the header is present and false" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Boosted", "false")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxBoosted "There should be a header present"
+                Expect.isFalse ctx.Request.Headers.HxBoosted.Value "The header value should have been false"
+            }
+        ]
+        testList "HxCurrentUrl" [
+            test "succeeds when the header is not present" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isNone ctx.Request.Headers.HxCurrentUrl "There should not have been a header returned"
+            }
+            test "succeeds when the header is present" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Current-URL", "http://localhost/test.htm")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxCurrentUrl "There should be a header present"
+                Expect.equal
+                    ctx.Request.Headers.HxCurrentUrl.Value (Uri "http://localhost/test.htm")
+                    "The header value was not correct"
+            }
+        ]
+        testList "HxHistoryRestoreRequest" [
+            test "succeeds when the header is not present" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isNone ctx.Request.Headers.HxHistoryRestoreRequest "There should not have been a header returned"
+            }
+            test "succeeds when the header is present and true" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-History-Restore-Request", "true")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxHistoryRestoreRequest "There should be a header present"
+                Expect.isTrue ctx.Request.Headers.HxHistoryRestoreRequest.Value "The header value should have been true"
+            }
+            test "succeeds when the header is present and false" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-History-Restore-Request", "false")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxHistoryRestoreRequest "There should be a header present"
+                Expect.isFalse
+                    ctx.Request.Headers.HxHistoryRestoreRequest.Value "The header should have been false"
+            }
+        ]
+        testList "HxPrompt" [
+            test "succeeds when the header is not present" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isNone ctx.Request.Headers.HxPrompt "There should not have been a header returned"
+            }
+            test "succeeds when the header is present" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Prompt", "of course")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxPrompt "There should be a header present"
+                Expect.equal ctx.Request.Headers.HxPrompt.Value "of course" "The header value was incorrect"
+            }
+        ]
+        testList "HxRequest" [
+            test "succeeds when the header is not present" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isNone ctx.Request.Headers.HxRequest "There should not have been a header returned"
+            }
+            test "succeeds when the header is present and true" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Request", "true")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxRequest "There should be a header present"
+                Expect.isTrue ctx.Request.Headers.HxRequest.Value "The header should have been true"
+            }
+            test "succeeds when the header is present and false" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Request", "false")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxRequest "There should be a header present"
+                Expect.isFalse ctx.Request.Headers.HxRequest.Value "The header should have been false"
+            }
+        ]
+        testList "HxTarget" [
+            test "succeeds when the header is not present" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isNone ctx.Request.Headers.HxTarget "There should not have been a header returned"
+            }
+            test "succeeds when the header is present" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Target", "#leItem")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxTarget "There should be a header present"
+                Expect.equal ctx.Request.Headers.HxTarget.Value "#leItem" "The header value was incorrect"
+            }
+        ]
+        testList "HxTrigger" [
+            test "succeeds when the header is not present" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isNone ctx.Request.Headers.HxTrigger "There should not have been a header returned"
+            }
+            test "succeeds when the header is present" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Trigger", "#trig")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxTrigger "There should be a header present"
+                Expect.equal ctx.Request.Headers.HxTrigger.Value "#trig" "The header value was incorrect"
+            }
+        ]
+        testList "HxTriggerName" [
+            test "succeeds when the header is not present" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isNone ctx.Request.Headers.HxTriggerName "There should not have been a header returned"
+            }
+            test "HxTriggerName succeeds when the header is present" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Trigger-Name", "click")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isSome ctx.Request.Headers.HxTriggerName "There should be a header present"
+                Expect.equal ctx.Request.Headers.HxTriggerName.Value "click" "The header value was incorrect"
+            }
+        ]
+    ]
+
+/// Tests for the HttpRequest extension properties
+let reqExtensions =
+    testList "HttpRequestExtensions" [
+        testList "IsHtmx" [
+            test "succeeds when request is not from htmx" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isFalse ctx.Request.IsHtmx "The request should not be an htmx request"
+            }    
+            test "succeeds when request is from htmx" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Request", "true")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isTrue ctx.Request.IsHtmx "The request should have been an htmx request"
+            }
+        ]
+        testList "IsHtmxRefresh" [
+            test "succeeds when request is not from htmx" {
+                let ctx = Substitute.For<HttpContext> ()
+                ctx.Request.Headers.ReturnsForAnyArgs (HeaderDictionary ()) |> ignore
+                Expect.isFalse ctx.Request.IsHtmxRefresh "The request should not have been an htmx refresh"
+            }
+            test "succeeds when request is from htmx, but not a refresh" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Request", "true")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isFalse ctx.Request.IsHtmxRefresh "The request should not have been an htmx refresh"
+            }
+            test "IsHtmxRefresh succeeds when request is from htmx and is a refresh" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                dic.Add ("HX-Request", "true")
+                dic.Add ("HX-History-Restore-Request", "true")
+                ctx.Request.Headers.ReturnsForAnyArgs dic |> ignore
+                Expect.isTrue ctx.Request.IsHtmxRefresh "The request should have been an htmx refresh"
+            }
+        ]
+    ]
+
+open System.Threading.Tasks
+
+/// Dummy "next" parameter to get the pipeline to execute/terminate
+let next (ctx : HttpContext) = Task.FromResult (Some ctx)
+        
+/// Tests for the HttpHandler functions provided in the Handlers module
+let handlers =
+    testList "HandlerTests" [
+        testTask "withHxPushUrl succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxPushUrl "/a-new-url" next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Push-Url") "The HX-Push-Url header should be present"
+            Expect.equal dic["HX-Push-Url"].[0] "/a-new-url" "The HX-Push-Url value was incorrect"
+        }
+        testTask "withHxNoPushUrl succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxNoPushUrl next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Push-Url") "The HX-Push-Url header should be present"
+            Expect.equal dic["HX-Push-Url"].[0] "false" "The HX-Push-Url value was incorrect"
+        }
+        testTask "withHxRedirect succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxRedirect "/somewhere-else" next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Redirect") "The HX-Redirect header should be present"
+            Expect.equal dic["HX-Redirect"].[0] "/somewhere-else" "The HX-Redirect value was incorrect"
+        }
+        testList "withHxRefresh" [
+            testTask "succeeds when set to true" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+                let! _ = withHxRefresh true next ctx
+                Expect.isTrue (dic.ContainsKey "HX-Refresh") "The HX-Refresh header should be present"
+                Expect.equal dic["HX-Refresh"].[0] "true" "The HX-Refresh value was incorrect"
+            }
+            testTask "succeeds when set to false" {
+                let ctx = Substitute.For<HttpContext> ()
+                let dic = HeaderDictionary ()
+                ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+                let! _ = withHxRefresh false next ctx
+                Expect.isTrue (dic.ContainsKey "HX-Refresh") "The HX-Refresh header should be present"
+                Expect.equal dic["HX-Refresh"].[0] "false" "The HX-Refresh value was incorrect"
+            }
+        ]
+        testTask "withHxReplaceUrl succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxReplaceUrl "/a-substitute-url" next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Replace-Url") "The HX-Replace-Url header should be present"
+            Expect.equal dic["HX-Replace-Url"].[0] "/a-substitute-url" "The HX-Replace-Url value was incorrect"
+        }
+        testTask "withHxNoReplaceUrl succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxNoReplaceUrl next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Replace-Url") "The HX-Replace-Url header should be present"
+            Expect.equal dic["HX-Replace-Url"].[0] "false" "The HX-Replace-Url value was incorrect"
+        }
+        testTask "withHxReswap succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxReswap HxSwap.BeforeEnd next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Reswap") "The HX-Reswap header should be present"
+            Expect.equal dic["HX-Reswap"].[0] HxSwap.BeforeEnd "The HX-Reswap value was incorrect"
+        } 
+        testTask "withHxRetarget succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxRetarget "#somewhereElse" next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Retarget") "The HX-Retarget header should be present"
+            Expect.equal dic["HX-Retarget"].[0] "#somewhereElse" "The HX-Retarget value was incorrect"
+        }
+        testTask "withHxTrigger succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxTrigger "doSomething" next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Trigger") "The HX-Trigger header should be present"
+            Expect.equal dic["HX-Trigger"].[0] "doSomething" "The HX-Trigger value was incorrect"
+        }
+        testTask "withHxTriggerMany succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxTriggerMany [ "blah", "foo"; "bleh", "bar" ] next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Trigger") "The HX-Trigger header should be present"
+            Expect.equal
+                dic["HX-Trigger"].[0] """{ "blah": "foo", "bleh": "bar" }""" "The HX-Trigger value was incorrect"
+        }
+        testTask "withHxTriggerAfterSettle succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxTriggerAfterSettle "byTheWay" next ctx
+            Expect.isTrue
+                (dic.ContainsKey "HX-Trigger-After-Settle") "The HX-Trigger-After-Settle header should be present"
+            Expect.equal dic["HX-Trigger-After-Settle"].[0] "byTheWay" "The HX-Trigger-After-Settle value was incorrect"
+        }
+        testTask "withHxTriggerManyAfterSettle succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxTriggerManyAfterSettle [ "oof", "ouch"; "hmm", "uh" ] next ctx
+            Expect.isTrue
+                (dic.ContainsKey "HX-Trigger-After-Settle") "The HX-Trigger-After-Settle header should be present"
+            Expect.equal
+                dic["HX-Trigger-After-Settle"].[0] """{ "oof": "ouch", "hmm": "uh" }"""
+                "The HX-Trigger-After-Settle value was incorrect"
+        }
+        testTask "withHxTriggerAfterSwap succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxTriggerAfterSwap "justASec" next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Trigger-After-Swap") "The HX-Trigger-After-Swap header should be present"
+            Expect.equal dic["HX-Trigger-After-Swap"].[0] "justASec" "The HX-Trigger-After-Swap value was incorrect"
+        }
+        testTask "withHxTriggerManyAfterSwap succeeds" {
+            let ctx = Substitute.For<HttpContext> ()
+            let dic = HeaderDictionary ()
+            ctx.Response.Headers.ReturnsForAnyArgs dic |> ignore
+            let! _ = withHxTriggerManyAfterSwap [ "this", "1"; "that", "2" ] next ctx
+            Expect.isTrue (dic.ContainsKey "HX-Trigger-After-Swap") "The HX-Trigger-After-Swap header should be present"
+            Expect.equal
+                dic["HX-Trigger-After-Swap"].[0] """{ "this": "1", "that": "2" }"""
+                "The HX-Trigger-After-Swap value was incorrect"
+        }
+    ]
+
+/// All tests for this module
+let allTests = testList "Htmx" [ dictExtensions; reqExtensions; handlers ]

src/Tests/Program.fs

@@ -0,0 +1,6 @@
+open Expecto
+
+let allTests = testList "Giraffe" [ Common.allTests; Htmx.allTests; ViewEngine.allTests ]
+
+[<EntryPoint>]
+let main args = runTestsWithArgs defaultConfig args allTests

src/Tests/Tests.fsproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="Common.fs" />
+    <Compile Include="Htmx.fs" />
+    <Compile Include="ViewEngine.fs" />
+    <Compile Include="Program.fs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Common\Giraffe.Htmx.Common.fsproj" />
+    <ProjectReference Include="..\Htmx\Giraffe.Htmx.fsproj" />
+    <ProjectReference Include="..\ViewEngine.Htmx\Giraffe.ViewEngine.Htmx.fsproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Expecto" Version="9.0.4" />
+    <PackageReference Include="NSubstitute" Version="5.0.0" />
+  </ItemGroup>
+
+</Project>

src/Tests/ViewEngine.fs

@@ -0,0 +1,480 @@
+module ViewEngine
+
+open Expecto
+open Giraffe.ViewEngine
+
+/// Tests for the HxEncoding module
+let hxEncoding =
+    testList "Encoding" [
+        test "Form is correct" {
+            Expect.equal ("application/x-www-form-urlencoded", HxEncoding.Form)
+        }
+        test "MultipartForm is correct" {
+            Expect.equal ("multipart/form-data", HxEncoding.MultipartForm)
+        }
+    ]
+
+/// Tests for the HxHeaders module
+let hxHeaders =
+    testList "Headers" [
+        test "From succeeds with an empty list" {
+            Expect.equal ("{  }", HxHeaders.From [])
+        }
+        test "From succeeds and escapes quotes" {
+            Expect.equal ("{ \"test\": \"one two three\", \"again\": \"four \\\"five\\\" six\" }",
+                         HxHeaders.From [ "test", "one two three"; "again", "four \"five\" six" ])
+        }
+    ]
+
+/// Tests for the HxParams module
+let hxParams =
+    testList "Params" [
+        test "All is correct" {
+            Expect.equal ("*", HxParams.All)
+        }
+        test "None is correct" {
+            Expect.equal ("none", HxParams.None)
+        }
+        test "With succeeds with empty list" {
+            Expect.equal ("", HxParams.With [])
+        }
+        test "With succeeds with one list item" {
+            Expect.equal ("boo", HxParams.With [ "boo" ])
+        }
+        test "With succeeds with multiple list items" {
+            Expect.equal ("foo,bar,baz", HxParams.With [ "foo"; "bar"; "baz" ])
+        }
+        test "Except succeeds with empty list" {
+            Expect.equal ("not ", HxParams.Except [])
+        }
+        test "Except succeeds with one list item" {
+            Expect.equal ("not that", HxParams.Except [ "that" ])
+        }
+        test "Except succeeds with multiple list items" {
+            Expect.equal ("not blue,green", HxParams.Except [ "blue"; "green" ])
+        }
+    ]
+
+/// Tests for the HxRequest module
+let hxRequest =
+    testList "Request" [
+        test "Configure succeeds with an empty list" {
+            Expect.equal ("{  }", HxRequest.Configure [])
+        }
+        test "Configure succeeds with a non-empty list" {
+            Expect.equal ("{ \"a\": \"b\", \"c\": \"d\" }", HxRequest.Configure [ "\"a\": \"b\""; "\"c\": \"d\"" ])
+        }
+        test "Configure succeeds with all known params configured" {
+            Expect.equal ("{ \"timeout\": 1000, \"credentials\": false, \"noHeaders\": true }",
+                        HxRequest.Configure [ HxRequest.Timeout 1000; HxRequest.Credentials false; HxRequest.NoHeaders true ])
+        }
+        test "Timeout succeeds" {
+            Expect.equal ("\"timeout\": 50", HxRequest.Timeout 50)
+        }
+        test "Credentials succeeds when set to true" {
+            Expect.equal ("\"credentials\": true", HxRequest.Credentials true)
+        }
+        test "Credentials succeeds when set to false" {
+            Expect.equal ("\"credentials\": false", HxRequest.Credentials false)
+        }
+        test "NoHeaders succeeds when set to true" {
+            Expect.equal ("\"noHeaders\": true", HxRequest.NoHeaders true)
+        }
+        test "NoHeaders succeeds when set to false" {
+            Expect.equal ("\"noHeaders\": false", HxRequest.NoHeaders false)
+        }
+    ]
+
+/// Tests for the HxTrigger module
+let hxTrigger =
+    testList "Trigger" [
+        test "Click is correct" {
+            Expect.equal ("click", HxTrigger.Click)
+        }
+        test "Load is correct" {
+            Expect.equal ("load", HxTrigger.Load)
+        }
+        test "Revealed is correct" {
+            Expect.equal ("revealed", HxTrigger.Revealed)
+        }
+        test "Every succeeds" {
+            Expect.equal ("every 3s", HxTrigger.Every "3s")
+        }
+        test "Filter.Alt succeeds" {
+            Expect.equal ("click[altKey]", HxTrigger.Filter.Alt HxTrigger.Click)
+        }
+        test "Filter.Ctrl succeeds" {
+            Expect.equal ("click[ctrlKey]", HxTrigger.Filter.Ctrl HxTrigger.Click)
+        }
+        test "Filter.Shift succeeds" {
+            Expect.equal ("click[shiftKey]", HxTrigger.Filter.Shift HxTrigger.Click)
+        }
+        test "Filter.CtrlAlt succeeds" {
+            Expect.equal ("click[ctrlKey&&altKey]", HxTrigger.Filter.CtrlAlt HxTrigger.Click)
+        }
+        test "Filter.CtrlShift succeeds" {
+            Expect.equal ("click[ctrlKey&&shiftKey]", HxTrigger.Filter.CtrlShift HxTrigger.Click)
+        }
+        test "Filter.CtrlAltShift succeeds" {
+            Expect.equal ("click[ctrlKey&&altKey&&shiftKey]", HxTrigger.Filter.CtrlAltShift HxTrigger.Click)
+        }
+        test "Filter.AltShift succeeds" {
+            Expect.equal ("click[altKey&&shiftKey]", HxTrigger.Filter.AltShift HxTrigger.Click)
+        }
+        test "Once succeeds when it is the first modifier" {
+            Expect.equal ("once", HxTrigger.Once "")
+        }
+        test "Once succeeds when it is not the first modifier" {
+            Expect.equal ("click once", HxTrigger.Once "click")
+        }
+        test "Changed succeeds when it is the first modifier" {
+            Expect.equal ("changed", HxTrigger.Changed "")
+        }
+        test "Changed succeeds when it is not the first modifier" {
+            Expect.equal ("click changed", HxTrigger.Changed "click")
+        }
+        test "Delay succeeds when it is the first modifier" {
+            Expect.equal ("delay:1s", HxTrigger.Delay "1s" "")
+        }
+        test "Delay succeeds when it is not the first modifier" {
+            Expect.equal ("click delay:2s", HxTrigger.Delay "2s" "click")
+        }
+        test "Throttle succeeds when it is the first modifier" {
+            Expect.equal ("throttle:4s", HxTrigger.Throttle "4s" "")
+        }
+        test "Throttle succeeds when it is not the first modifier" {
+            Expect.equal ("click throttle:7s", HxTrigger.Throttle "7s" "click")
+        }
+        test "From succeeds when it is the first modifier" {
+            Expect.equal ("from:.nav", HxTrigger.From ".nav" "")
+        }
+        test "From succeeds when it is not the first modifier" {
+            Expect.equal ("click from:#somewhere", HxTrigger.From "#somewhere" "click")
+        }
+        test "FromDocument succeeds when it is the first modifier" {
+            Expect.equal ("from:document", HxTrigger.FromDocument "")
+        } 
+        test "FromDocument succeeds when it is not the first modifier" {
+            Expect.equal ("click from:document", HxTrigger.FromDocument "click")
+        }
+        test "FromWindow succeeds when it is the first modifier" {
+            Expect.equal ("from:window", HxTrigger.FromWindow "")
+        }
+        test "FromWindow succeeds when it is not the first modifier" {
+            Expect.equal ("click from:window", HxTrigger.FromWindow "click")
+        }
+        test "FromClosest succeeds when it is the first modifier" {
+            Expect.equal ("from:closest div", HxTrigger.FromClosest "div" "")
+        }
+        test "FromClosest succeeds when it is not the first modifier" {
+            Expect.equal ("click from:closest p", HxTrigger.FromClosest "p" "click")
+        }
+        test "FromFind succeeds when it is the first modifier" {
+            Expect.equal ("from:find li", HxTrigger.FromFind "li" "")
+        }
+        test "FromFind succeeds when it is not the first modifier" {
+            Expect.equal ("click from:find .spot", HxTrigger.FromFind ".spot" "click")
+        }
+        test "Target succeeds when it is the first modifier" {
+            Expect.equal ("target:main", HxTrigger.Target "main" "")
+        }
+        test "Target succeeds when it is not the first modifier" {
+            Expect.equal ("click target:footer", HxTrigger.Target "footer" "click")
+        }
+        test "Consume succeeds when it is the first modifier" {
+            Expect.equal ("consume", HxTrigger.Consume "")
+        }
+        test "Consume succeeds when it is not the first modifier" {
+            Expect.equal ("click consume", HxTrigger.Consume "click")
+        }
+        test "Queue succeeds when it is the first modifier" {
+            Expect.equal ("queue:abc", HxTrigger.Queue "abc" "")
+        }
+        test "Queue succeeds when it is not the first modifier" {
+            Expect.equal ("click queue:def", HxTrigger.Queue "def" "click")
+        }
+        test "QueueFirst succeeds when it is the first modifier" {
+            Expect.equal ("queue:first", HxTrigger.QueueFirst "")
+        }
+        test "QueueFirst succeeds when it is not the first modifier" {
+            Expect.equal ("click queue:first", HxTrigger.QueueFirst "click")
+        }
+        test "QueueLast succeeds when it is the first modifier" {
+            Expect.equal ("queue:last", HxTrigger.QueueLast "")
+        }
+        test "QueueLast succeeds when it is not the first modifier" {
+            Expect.equal ("click queue:last", HxTrigger.QueueLast "click")
+        }
+        test "QueueAll succeeds when it is the first modifier" {
+            Expect.equal ("queue:all", HxTrigger.QueueAll "")
+        }
+        test "QueueAll succeeds when it is not the first modifier" {
+            Expect.equal ("click queue:all", HxTrigger.QueueAll "click")
+        }
+        test "QueueNone succeeds when it is the first modifier" {
+            Expect.equal ("queue:none", HxTrigger.QueueNone "")
+        }
+        test "QueueNone succeeds when it is not the first modifier" {
+            Expect.equal ("click queue:none", HxTrigger.QueueNone "click")
+        }
+    ]
+
+/// Tests for the HxVals module
+let hxVals =
+    testList "Vals" [
+        test "From succeeds with an empty list" {
+            Expect.equal ("{  }", HxVals.From [])
+        }
+        test "From succeeds and escapes quotes" {
+            Expect.equal ("{ \"test\": \"a \\\"b\\\" c\", \"2\": \"d e f\" }",
+                        HxVals.From [ "test", "a \"b\" c"; "2", "d e f" ])
+        }
+    ]
+
+/// Tests for the HtmxAttrs module
+let attributes =
+    testList "Attributes" [
+
+        /// Pipe-able assertion for a rendered node 
+        let shouldRender expected node = Expect.equal (expected, RenderView.AsString.htmlNode node)
+
+        test "_hxBoost succeeds" {
+            div [ _hxBoost ] [] |> shouldRender """<div hx-boost="true"></div>"""
+        }
+        test "_hxConfirm succeeds" {
+            button [ _hxConfirm "REALLY?!?" ] [] |> shouldRender """<button hx-confirm="REALLY?!?"></button>"""
+        }
+        test "_hxDelete succeeds" {
+            span [ _hxDelete "/this-endpoint" ] [] |> shouldRender """<span hx-delete="/this-endpoint"></span>"""
+        }
+        test "_hxDisable succeeds" {
+            p [ _hxDisable ] [] |> shouldRender """<p hx-disable></p>"""
+        }
+        test "_hxDisinherit succeeds" {
+            strong [ _hxDisinherit "*" ] [] |> shouldRender """<strong hx-disinherit="*"></strong>"""
+        }
+        test "_hxEncoding succeeds" {
+            form [ _hxEncoding "utf-7" ] [] |> shouldRender """<form hx-encoding="utf-7"></form>"""
+        }
+        test "_hxExt succeeds" {
+            section [ _hxExt "extendme" ] [] |> shouldRender """<section hx-ext="extendme"></section>"""
+        }
+        test "_hxGet succeeds" {
+            article [ _hxGet "/the-text" ] [] |> shouldRender """<article hx-get="/the-text"></article>"""
+        }
+        test "_hxHeaders succeeds" {
+            figure [ _hxHeaders """{ "X-Special-Header": "some-header" }""" ] []
+            |> shouldRender """<figure hx-headers="{ &quot;X-Special-Header&quot;: &quot;some-header&quot; }"></figure>"""
+        }
+        test "_hxHistory succeeds" {
+            span [ _hxHistory "false" ] [] |> shouldRender """<span hx-history="false"></span>"""
+        }
+        test "_hxHistoryElt succeeds" {
+            table [ _hxHistoryElt ] [] |> shouldRender """<table hx-history-elt></table>"""
+        }
+        test "_hxInclude succeeds" {
+            a [ _hxInclude ".extra-stuff" ] [] |> shouldRender """<a hx-include=".extra-stuff"></a>"""
+        }
+        test "_hxIndicator succeeds" {
+            aside [ _hxIndicator "#spinner" ] [] |> shouldRender """<aside hx-indicator="#spinner"></aside>"""
+        }
+        test "_hxNoBoost succeeds" {
+            td [ _hxNoBoost ] [] |> shouldRender """<td hx-boost="false"></td>"""
+        }
+        test "_hxParams succeeds" {
+            br [ _hxParams "[p1,p2]" ] |> shouldRender """<br hx-params="[p1,p2]">"""
+        }
+        test "_hxPatch succeeds" {
+            div [ _hxPatch "/arrrgh" ] [] |> shouldRender """<div hx-patch="/arrrgh"></div>"""
+        }
+        test "_hxPost succeeds" {
+            hr [ _hxPost "/hear-ye-hear-ye" ] |> shouldRender """<hr hx-post="/hear-ye-hear-ye">"""
+        }
+        test "_hxPreserve succeeds" {
+            img [ _hxPreserve ] |> shouldRender """<img hx-preserve="true">"""
+        }
+        test "_hxPrompt succeeds" {
+            strong [ _hxPrompt "Who goes there?" ] [] |> shouldRender """<strong hx-prompt="Who goes there?"></strong>"""
+        }
+        test "_hxPushUrl succeeds" {
+            dl [ _hxPushUrl "/a-b-c" ] [] |> shouldRender """<dl hx-push-url="/a-b-c"></dl>"""
+        }
+        test "_hxPut succeeds" {
+            s [ _hxPut "/take-this" ] [] |> shouldRender """<s hx-put="/take-this"></s>"""
+        }
+        test "_hxReplaceUrl succeeds" {
+            p [ _hxReplaceUrl "/something-else" ] [] |> shouldRender """<p hx-replace-url="/something-else"></p>"""
+        }
+        test "_hxRequest succeeds" {
+            u [ _hxRequest "noHeaders" ] [] |> shouldRender """<u hx-request="noHeaders"></u>"""
+        }
+        test "_hxSelect succeeds" {
+            nav [ _hxSelect "#navbar" ] [] |> shouldRender """<nav hx-select="#navbar"></nav>"""
+        }
+        test "_hxSelectOob succeeds" {
+            section [ _hxSelectOob "#oob" ] [] |> shouldRender """<section hx-select-oob="#oob"></section>"""
+        }
+        test "_hxSse succeeds" {
+            footer [ _hxSse "connect:/my-events" ] [] |> shouldRender """<footer hx-sse="connect:/my-events"></footer>"""
+        }
+        test "_hxSwap succeeds" {
+            del [ _hxSwap "innerHTML" ] [] |> shouldRender """<del hx-swap="innerHTML"></del>"""
+        }
+        test "_hxSwapOob succeeds" {
+            li [ _hxSwapOob "true" ] [] |> shouldRender """<li hx-swap-oob="true"></li>"""
+        }
+        test "_hxSync succeeds" {
+            nav [ _hxSync "closest form:abort" ] [] |> shouldRender """<nav hx-sync="closest form:abort"></nav>"""
+        }
+        test "_hxTarget succeeds" {
+            header [ _hxTarget "#somewhereElse" ] [] |> shouldRender """<header hx-target="#somewhereElse"></header>"""
+        }
+        test "_hxTrigger succeeds" {
+            figcaption [ _hxTrigger "load" ] [] |> shouldRender """<figcaption hx-trigger="load"></figcaption>"""
+        }
+        test "_hxVals succeeds" {
+            dt [ _hxVals """{ "extra": "values" }""" ] []
+            |> shouldRender """<dt hx-vals="{ &quot;extra&quot;: &quot;values&quot; }"></dt>"""
+        }
+        test "_hxWs succeeds" {
+            ul [ _hxWs "connect:/web-socket" ] [] |> shouldRender """<ul hx-ws="connect:/web-socket"></ul>"""
+        }
+    ]
+
+/// Tests for the Script module
+let script =
+    testList "Script" [
+        test "Script.minified succeeds" {
+            let html = RenderView.AsString.htmlNode Script.minified
+            Expect.equal
+                ("""<script src="https://unpkg.com/htmx.org@1.8.5" integrity="sha384-7aHh9lqPYGYZ7sTHvzP1t3BAfLhYSTy9ArHdP3Xsr9/3TlGurYgcPBoFmXX2TX/w" crossorigin="anonymous"></script>""",
+                html)
+        }
+        test "Script.unminified succeeds" {
+            let html = RenderView.AsString.htmlNode Script.unminified
+            Expect.equal
+                ("""<script src="https://unpkg.com/htmx.org@1.8.5/dist/htmx.js" integrity="sha384-VgGOQitu5eD5qAdh1QPLvPeTt1X4/Iw9B2sfYw+p3xtTumxaRv+onip7FX+P6q30" crossorigin="anonymous"></script>""",
+                html)
+        }
+    ]
+
+open System.Text
+
+/// Tests for the RenderFragment module
+let renderFragment =
+    testList "RenderFragment" [
+        test "RenderFragment.findIdNode fails with a Text node" {
+            Expect.isFalse (Option.isSome (RenderFragment.findIdNode "blue" (Text "")))
+        }
+        test "RenderFragment.findIdNode fails with a VoidElement without a matching ID" {
+            Expect.isFalse (Option.isSome (RenderFragment.findIdNode "purple" (br [ _id "mauve" ])))
+        }
+        test "RenderFragment.findIdNode fails with a ParentNode with no children with a matching ID" {
+            Expect.isFalse (Option.isSome (RenderFragment.findIdNode "green" (p [] [ str "howdy"; span [] [ str "huh" ] ])))
+        }
+        test "RenderFragment.findIdNode succeeds with a VoidElement with a matching ID" {
+            let leNode = hr [ _id "groovy" ]
+            let foundNode = RenderFragment.findIdNode "groovy" leNode
+            Expect.isTrue (Option.isSome foundNode)
+            Assert.Same (leNode, foundNode.Value)
+        }
+        test "RenderFragment.findIdNode succeeds with a ParentNode with a child with a matching ID" {
+            let leNode = span [ _id "its-me" ] [ str "Mario" ]
+            let foundNode = RenderFragment.findIdNode "its-me" (p [] [ str "test"; str "again"; leNode; str "un mas" ])
+            Expect.isTrue (Option.isSome foundNode)
+            Assert.Same (leNode, foundNode.Value)
+        }
+        /// Generate a message if the requested ID node is not found
+        let private nodeNotFound (nodeId : string) =
+            $"<em>&ndash; ID {nodeId} not found &ndash;</em>"
+
+        /// Tests for the AsString module
+        testList "AsString" [
+            test "RenderFragment.AsString.htmlFromNodes succeeds when an ID is matched" {
+                let html =
+                    RenderFragment.AsString.htmlFromNodes "needle"
+                        [ p [] []; p [ _id "haystack" ] [ span [ _id "needle" ] [ str "ouch" ]; str "hay"; str "hay" ]]
+                Expect.equal ("""<span id="needle">ouch</span>""", html)
+            }
+            test "RenderFragment.AsString.htmlFromNodes fails when an ID is not matched" {
+                Expect.equal (nodeNotFound "oops", RenderFragment.AsString.htmlFromNodes "oops" [])
+            }
+            test "RenderFragment.AsString.htmlFromNode succeeds when ID is matched at top level" {
+                let html = RenderFragment.AsString.htmlFromNode "wow" (p [ _id "wow" ] [ str "found it" ])
+                Expect.equal ("""<p id="wow">found it</p>""", html)
+            }
+            test "RenderFragment.AsString.htmlFromNode succeeds when ID is matched in child element" {
+                let html =
+                    div [] [ p [] [ str "not it" ]; p [ _id "hey" ] [ str "ta-da" ]]
+                    |> RenderFragment.AsString.htmlFromNode "hey"
+                Expect.equal ("""<p id="hey">ta-da</p>""", html)
+            }
+            test "RenderFragment.AsString.htmlFromNode fails when an ID is not matched" {
+                Expect.equal (nodeNotFound "me", RenderFragment.AsString.htmlFromNode "me" (hr []))
+            }
+        ]
+        /// Tests for the AsBytes module
+        testList "AsBytes" [
+            
+            /// Alias for UTF-8 encoding
+            let private utf8 = Encoding.UTF8
+
+            test "RenderFragment.AsBytes.htmlFromNodes succeeds when an ID is matched" {
+                let bytes =
+                    RenderFragment.AsBytes.htmlFromNodes "found"
+                        [ p [] []; p [ _id "not-it" ] [ str "nope"; span [ _id "found" ] [ str "boo" ]; str "nope" ]]
+                Expect.equal<byte> (utf8.GetBytes """<span id="found">boo</span>""", bytes)
+            }
+            test "RenderFragment.AsBytes.htmlFromNodes fails when an ID is not matched" {
+                Expect.equal<byte> (utf8.GetBytes (nodeNotFound "whiff"), RenderFragment.AsBytes.htmlFromNodes "whiff" [])
+            }
+            test "RenderFragment.AsBytes.htmlFromNode succeeds when ID is matched at top level" {
+                let bytes = RenderFragment.AsBytes.htmlFromNode "first" (p [ _id "first" ] [ str "!!!" ])
+                Expect.equal<byte> (utf8.GetBytes """<p id="first">!!!</p>""", bytes)
+            }
+            test "RenderFragment.AsBytes.htmlFromNode succeeds when ID is matched in child element" {
+                let bytes =
+                    div [] [ p [] [ str "not me" ]; p [ _id "child" ] [ str "node" ]]
+                    |> RenderFragment.AsBytes.htmlFromNode "child"
+                Expect.equal<byte> (utf8.GetBytes """<p id="child">node</p>""", bytes)
+            }
+            test "RenderFragment.AsBytes.htmlFromNode fails when an ID is not matched" {
+                Expect.equal<byte> (utf8.GetBytes (nodeNotFound "foo"), RenderFragment.AsBytes.htmlFromNode "foo" (hr []))
+            }
+        ]
+        /// Tests for the IntoStringBuilder module
+        testList "IntoStringBuilder" [
+            test "RenderFragment.IntoStringBuilder.htmlFromNodes succeeds when an ID is matched" {
+                let sb = StringBuilder ()
+                RenderFragment.IntoStringBuilder.htmlFromNodes sb "find-me"
+                    [ p [] []; p [ _id "peekaboo" ] [ str "bzz"; str "nope"; span [ _id "find-me" ] [ str ";)" ] ]]
+                Expect.equal ("""<span id="find-me">;)</span>""", string sb)
+            }
+            test "RenderFragment.IntoStringBuilder.htmlFromNodes fails when an ID is not matched" {
+                let sb = StringBuilder ()
+                RenderFragment.IntoStringBuilder.htmlFromNodes sb "missing" []
+                Expect.equal (nodeNotFound "missing", string sb)
+            }
+            test "RenderFragment.IntoStringBuilder.htmlFromNode succeeds when ID is matched at top level" {
+                let sb = StringBuilder ()
+                RenderFragment.IntoStringBuilder.htmlFromNode sb "top" (p [ _id "top" ] [ str "pinnacle" ])
+                Expect.equal ("""<p id="top">pinnacle</p>""", string sb)
+            }
+            test "RenderFragment.IntoStringBuilder.htmlFromNode succeeds when ID is matched in child element" {
+                let sb = StringBuilder ()
+                div [] [ p [] [ str "nada" ]; p [ _id "it" ] [ str "is here" ]]
+                |> RenderFragment.IntoStringBuilder.htmlFromNode sb "it"
+                Expect.equal ("""<p id="it">is here</p>""", string sb)
+            }
+            test "RenderFragment.IntoStringBuilder.htmlFromNode fails when an ID is not matched" {
+                let sb = StringBuilder ()
+                RenderFragment.IntoStringBuilder.htmlFromNode sb "bar" (hr [])
+                Expect.equal (nodeNotFound "bar", string sb)
+            }
+        ]
+    ]
+
+/// All tests in this module
+let allTests =
+    testList "ViewEngine.Htmx"
+             [ hxEncoding; hxHeaders; hxParams; hxRequest; hxTrigger; hxVals; attributes; script; renderFragment ]