[FEATURE] Add unit tests for the existing Settings methods (#449)

Author: oliverklee

CHANGELOG.md

@@ -7,6 +7,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ### Added
 
+- Add more tests (#449)
+
 ### Changed
 
 ### Deprecated

tests/SettingsTest.php

@@ -0,0 +1,155 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Sabberworm\CSS\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Sabberworm\CSS\Settings;
+
+/**
+ * @covers \Sabberworm\CSS\Settings
+ */
+final class SettingsTest extends TestCase
+{
+    /**
+     * @var Settings
+     */
+    private $subject;
+
+    protected function setUp(): void
+    {
+        $this->subject = Settings::create();
+    }
+
+    /**
+     * @test
+     */
+    public function createReturnsInstance(): void
+    {
+        $settings = Settings::create();
+
+        self::assertInstanceOf(Settings::class, $settings);
+    }
+
+    /**
+     * @test
+     */
+    public function createReturnsANewInstanceForEachCall(): void
+    {
+        $settings1 = Settings::create();
+        $settings2 = Settings::create();
+
+        self::assertNotSame($settings1, $settings2);
+    }
+
+    /**
+     * @test
+     */
+    public function multibyteSupportByDefaultStateOfMbStringExtension(): void
+    {
+        self::assertSame(extension_loaded('mbstring'), $this->subject->bMultibyteSupport);
+    }
+
+    /**
+     * @test
+     */
+    public function withMultibyteSupportProvidesFluentInterface(): void
+    {
+        self::assertSame($this->subject, $this->subject->withMultibyteSupport());
+    }
+
+    /**
+     * @return array<string, array{0: bool}>
+     */
+    public static function booleanDataProvider(): array
+    {
+        return [
+            'true' => [true],
+            'false' => [false],
+        ];
+    }
+
+    /**
+     * @test
+     * @dataProvider booleanDataProvider
+     */
+    public function withMultibyteSupportSetsMultibyteSupport(bool $value): void
+    {
+        $this->subject->withMultibyteSupport($value);
+
+        self::assertSame($value, $this->subject->bMultibyteSupport);
+    }
+
+    /**
+     * @test
+     */
+    public function defaultCharsetByDefaultIsUtf8(): void
+    {
+        self::assertSame('utf-8', $this->subject->sDefaultCharset);
+    }
+
+    /**
+     * @test
+     */
+    public function withDefaultCharsetProvidesFluentInterface(): void
+    {
+        self::assertSame($this->subject, $this->subject->withDefaultCharset('UTF-8'));
+    }
+
+    /**
+     * @test
+     */
+    public function withDefaultCharsetSetsDefaultCharset(): void
+    {
+        $charset = 'ISO-8859-1';
+        $this->subject->withDefaultCharset($charset);
+
+        self::assertSame($charset, $this->subject->sDefaultCharset);
+    }
+
+    /**
+     * @test
+     */
+    public function lenientParsingByDefaultIsTrue(): void
+    {
+        self::assertTrue($this->subject->bLenientParsing);
+    }
+
+    /**
+     * @test
+     */
+    public function withLenientParsingProvidesFluentInterface(): void
+    {
+        self::assertSame($this->subject, $this->subject->withLenientParsing());
+    }
+
+    /**
+     * @test
+     * @dataProvider booleanDataProvider
+     */
+    public function withLenientParsingSetsLenientParsing(bool $value): void
+    {
+        $this->subject->withLenientParsing($value);
+
+        self::assertSame($value, $this->subject->bLenientParsing);
+    }
+
+    /**
+     * @test
+     */
+    public function beStrictProvidesFluentInterface(): void
+    {
+        self::assertSame($this->subject, $this->subject->beStrict());
+    }
+
+    /**
+     * @test
+     */
+    public function beStrictSetsLenientParsingToFalse(): void
+    {
+        $this->subject->beStrict();
+
+        self::assertFalse($this->subject->bLenientParsing);
+    }
+}