Add unit-tests for Exception class.

Author: Potherca

tests/Unit/ExceptionTest.php

@@ -0,0 +1,105 @@
+<?php
+
+namespace Unit;
+
+use Pdsinterop\Solid\Resources\Exception;
+use PHPUnit\Framework\TestCase;
+use TypeError;
+
+/**
+ * @coversDefaultClass \Pdsinterop\Solid\Resources\Exception
+ * @covers ::create
+ */
+class ExceptionTest extends TestCase
+{
+    const MOCK_CONTEXT = ['Test'];
+    const MOCK_MESSAGE = 'Error: %s';
+
+    /**
+     * @testdox Exception should complain when called without a message
+     */
+    public function testCreateWithoutMessage(): void
+    {
+        $this->expectException(TypeError::class);
+        $this->expectExceptionMessageMatches('/Too few arguments .+ 0 passed/');
+
+        Exception::create();
+    }
+
+    /**
+     * @testdox Exception should complain when called without a context
+     */
+    public function testCreateWithoutContext(): void
+    {
+        $this->expectException(TypeError::class);
+        $this->expectExceptionMessageMatches('/Too few arguments .+ 1 passed/');
+
+        Exception::create(self::MOCK_MESSAGE);
+    }
+
+    /**
+     * @testdox Exception should complain when called with invalid message
+     */
+    public function testCreateWithInvalidMessage(): void
+    {
+        $this->expectException(TypeError::class);
+        $this->expectExceptionMessageMatches('/Argument #1 .+ must be of type string/');
+
+        Exception::create(null, self::MOCK_CONTEXT);
+    }
+
+    /**
+     * @testdox Exception should complain when called with invalid context
+     */
+    public function testCreateWithInvalidContext(): void
+    {
+        $this->expectException(TypeError::class);
+        $this->expectExceptionMessageMatches('/Argument #2 .+ must be of type array/');
+
+        Exception::create(self::MOCK_MESSAGE, null);
+    }
+
+    /**
+     * @testdox Exception should complain when given context does not match provided message format
+     */
+    public function testCreateWithIncorrectContext(): void
+    {
+        $this->expectException(\ValueError::class);
+        $this->expectExceptionMessageMatches('/The arguments array must contain 1 items?, 0 given/');
+
+        Exception::create(self::MOCK_MESSAGE, []);
+    }
+
+    /**
+     * @testdox Exception should be created when called with valid message and context
+     */
+    public function testCreateWithMessageAndContext(): void
+    {
+        $expected = Exception::class;
+        $actual = Exception::create(self::MOCK_MESSAGE, self::MOCK_CONTEXT);
+
+        $this->assertInstanceOf($expected, $actual);
+    }
+
+    /**
+     * @testdox Created Exception should have the correct message when called with a message and context
+     */
+    public function testCreateFormatsErrorMessage(): void
+    {
+        $expected = 'Error: Test';
+        $actual = Exception::create(self::MOCK_MESSAGE, self::MOCK_CONTEXT)->getMessage();
+
+        $this->assertSame($expected, $actual);
+    }
+
+    /**
+     * @testdox Exception should be created when called with a message, context and previous exception
+     */
+    public function testCreateSetsPreviousException(): void
+    {
+        $expected = new \Exception('Previous exception');
+        $actual = Exception::create(self::MOCK_MESSAGE, self::MOCK_CONTEXT, $expected)->getPrevious();
+
+        $this->assertSame($expected, $actual);
+    }
+}