Add tests

tests/Features/Expect/toContainEquals.php

@@ -0,0 +1,36 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+
+test('passes arrays', function () {
+    expect([1, 2, 42])->toContain('42');
+});
+
+test('passes arrays with multiple needles', function () {
+    expect([1, 2, 42])->toContain('42', '2');
+});
+
+test('failures', function () {
+    expect([1, 2, 42])->toContain('3');
+})->throws(ExpectationFailedException::class);
+
+test('failures with multiple needles (all failing)', function () {
+    expect([1, 2, 42])->toContainEquals('3', '4');
+})->throws(ExpectationFailedException::class);
+
+test('failures with multiple needles (some failing)', function () {
+    expect([1, 2, 42])->toContainEquals('1', '3', '4');
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect([1, 2, 42])->not->toContainEquals('42');
+})->throws(ExpectationFailedException::class);
+
+test('not failures with multiple needles (all failing)', function () {
+    expect([1, 2, 42])->not->toContainEquals('42', '2');
+})->throws(ExpectationFailedException::class);
+
+test('not failures with multiple needles (some failing)', function () {
+    expect([1, 2, 42])->not->toContainEquals('42', '1');
+})->throws(ExpectationFailedException::class);