Add patch functions

src/integration-test/kotlin/postgresql/PatchIT.kt

@@ -0,0 +1,52 @@
+package solutions.bitbadger.documents.postgresql
+
+import org.junit.jupiter.api.DisplayName
+import solutions.bitbadger.documents.common.Patch
+import kotlin.test.Test
+
+/**
+ * PostgreSQL integration tests for the `Patch` object / `patchBy*` connection extension functions
+ */
+@DisplayName("PostgreSQL - Patch")
+class PatchIT {
+
+    @Test
+    @DisplayName("byId patches an existing document")
+    fun byIdMatch() =
+        PgDB().use(Patch::byIdMatch)
+
+    @Test
+    @DisplayName("byId succeeds for a non-existent document")
+    fun byIdNoMatch() =
+        PgDB().use(Patch::byIdNoMatch)
+
+    @Test
+    @DisplayName("byFields patches matching document")
+    fun byFieldsMatch() =
+        PgDB().use(Patch::byFieldsMatch)
+
+    @Test
+    @DisplayName("byFields succeeds when no documents match")
+    fun byFieldsNoMatch() =
+        PgDB().use(Patch::byFieldsNoMatch)
+
+    @Test
+    @DisplayName("byContains patches matching document")
+    fun byContainsMatch() =
+        PgDB().use(Patch::byContainsMatch)
+
+    @Test
+    @DisplayName("byContains succeeds when no documents match")
+    fun byContainsNoMatch() =
+        PgDB().use(Patch::byContainsNoMatch)
+
+    @Test
+    @DisplayName("byJsonPath patches matching document")
+    fun byJsonPathMatch() =
+        PgDB().use(Patch::byJsonPathMatch)
+
+    @Test
+    @DisplayName("byJsonPath succeeds when no documents match")
+    fun byJsonPathNoMatch() =
+        PgDB().use(Patch::byJsonPathNoMatch)
+}