WIP on pipeable array functions

tests/Unit/ArrTest.php

@@ -0,0 +1,58 @@
+<?php
+/**
+ * @author Daniel J. Summers <daniel@bitbadger.solutions>
+ * @license MIT
+ */
+
+declare(strict_types=1);
+
+use BitBadger\InspiredByFSharp\Arr;
+
+describe('::all()', function () {
+    test('succeeds when all elements match', function () {
+        expect([2, 4, 6] |> Arr::all(fn ($it) => $it % 2 === 0))->toBeTrue();
+    });
+    test('succeeds when not all elements match', function () {
+        expect([2, 5, 6] |> Arr::all(fn ($it) => $it % 2 === 0))->toBeFalse();
+    });
+});
+
+describe('::any()', function () {
+    test('succeeds when no elements match', function () {
+        expect([2, 4, 6] |> Arr::any(fn ($it) => $it % 2 === 1))->toBeFalse();
+    });
+    test('succeeds when an element matches', function () {
+        expect([2, 5, 6] |> Arr::any(fn ($it) => $it % 2 === 1))->toBeTrue();
+    });
+});
+
+describe('::changeKeyCase()', function () {
+    test('succeeds', function () {
+        $test = ['ONE' => 1, 'two' => 2, 'Three' => 3] |> Arr::changeKeyCase();
+        expect(array_keys($test))->toEqual(['one', 'two', 'three']);
+    });
+});
+
+describe('::chunk()', function () {
+    test('succeeds', function () {
+        expect([1, 2, 3, 4, 5] |> Arr::chunk(2))->toBeArray()->toHaveLength(3);
+    });
+});
+
+describe('::countValues', function () {
+    test('succeeds', function () {
+        $arr = ['this' => 1, 'that' => 2, 'theOther' => 3, 'somewhere' => 1, 'else' => 5] |> Arr::countValues();
+        expect($arr)->toBeArray()
+            ->and(array_keys($arr))->toHaveLength(4)
+            ->and($arr[1])->toBe(2)
+            ->and($arr[2])->toBe(1)
+            ->and($arr[3])->toBe(1)
+            ->and($arr[5])->toBe(1);
+    });
+});
+
+describe('::map()', function () {
+    test('maps an array', function () {
+        expect([1, 2, 3] |> Arr::map(fn ($it) => $it * 2))->toEqual([2, 4, 6]);
+    });
+});