Added Bool Expression test.

Author: antonLytkin18

tests/WS/Utils/Collections/Functions/Expression/BoolExpressionTest.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * @author Anton Lytkin <a.lytkin@worksolutions.ru>
+ */
+
+namespace WS\Utils\Collections\Functions\Expression;
+
+use PHPUnit\Framework\TestCase;
+use WS\Utils\Collections\CollectionFactory;
+
+class BoolExpressionTest extends TestCase
+{
+
+    public function cases()
+    {
+        return [
+            [
+                [1, 2, 3],
+                BoolExpression::with(function ($element) {
+                    return $element !== 2;
+                })
+                    ->or(function ($element) {
+                        return $element !== 77;
+                    })
+                    ->and(function ($element) {
+                        return in_array($element, [1, 3]);
+                    }),
+                [1, 3],
+            ],
+        ];
+    }
+
+    /**
+     * @test
+     * @dataProvider cases
+     * @param array $sequence
+     * @param BoolExpression $expression
+     * @param array $expected
+     */
+    public function filterByExpression(array $sequence, BoolExpression $expression, array $expected)
+    {
+
+        $result = CollectionFactory::from($sequence)
+            ->stream()
+            ->filter($expression)
+            ->getCollection()
+            ->toArray();
+
+        self::assertEquals($expected, $result);
+    }
+
+}