add tests

tests/Unit/Clover/Handler/HandleSingleDocumentTest.php

@@ -0,0 +1,95 @@
+<?php
+
+declare(strict_types=1);
+
+use Dannecron\CoverageMerger\Clover\Dto\FileDto;
+use Dannecron\CoverageMerger\Clover\Exceptions\HandleException;
+use Dannecron\CoverageMerger\Clover\Handler;
+use Dannecron\CoverageMerger\Clover\Parser;
+
+\test('examples without files', function (string $exampleFilename): void {
+    $handler = new Handler(new Parser());
+
+    $cloverContents = \file_get_contents(\getExamplePath($exampleFilename));
+
+    $accumulator = $handler->handleSingleDocument(
+        \simplexml_load_string($cloverContents),
+    );
+
+    $files = $accumulator->getFiles();
+    \expect($files)->toHaveCount(0);
+})->with([
+    'empty-package.xml',
+    'empty-project.xml',
+    'file-with-errors.xml',
+    'file-with-no-name.xml',
+    'minimal.xml',
+]);
+
+\test('examples with single file', function (
+    string $exampleFilename,
+    string $expectedFilename,
+    int $expectedClassesCount,
+    int $expectedLinesCount,
+): void {
+    $handler = new Handler(new Parser());
+
+    $cloverContents = \file_get_contents(\getExamplePath($exampleFilename));
+
+    $accumulator = $handler->handleSingleDocument(
+        \simplexml_load_string($cloverContents),
+    );
+
+    $files = $accumulator->getFiles();
+    \expect($files)->toHaveCount(1)->toHaveKey($expectedFilename);
+
+    $file = $files[$expectedFilename];
+    \expect($file)->toBeInstanceOf(FileDto::class);
+    \expect($file->getClasses())->toHaveCount($expectedClassesCount);
+    \expect($file->getLines())->toHaveCount($expectedLinesCount);
+})
+    ->with([
+        ['empty-file-with-package.xml', 'test.php', 0, 0],
+        ['file-with-package.xml', 'test.php', 0, 5],
+        ['file-without-package.xml', 'test.php', 0, 4],
+        ['metrics-and-classes.xml', '/src/Example/Namespace/Class.php', 1, 16],
+    ]);
+
+\test('examples with two files', function (
+    string $exampleFilename,
+    string $expectedFilename1,
+    string $expectedFilename2,
+): void {
+    $handler = new Handler(new Parser());
+
+    $cloverContents = \file_get_contents(\getExamplePath($exampleFilename));
+
+    $accumulator = $handler->handleSingleDocument(
+        \simplexml_load_string($cloverContents),
+    );
+
+    $files = $accumulator->getFiles();
+    \expect($files)->toHaveCount(2)
+        ->toHaveKey($expectedFilename1)
+        ->toHaveKey($expectedFilename2);
+})
+    ->with([
+        ['empty-file-without-package.xml', 'test.php', 'other.php'],
+        ['file-with-differences.xml', 'test.php', 'other.php'],
+    ]);
+
+\test('examples with invalid structure', function (string $exampleFilename): void {
+    $handler = new Handler(new Parser());
+
+    $cloverContents = \file_get_contents(\getExamplePath($exampleFilename));
+
+    $this->expectException(HandleException::class);
+    $handler->handleSingleDocument(
+        \simplexml_load_string($cloverContents),
+    );
+})
+    ->with([
+        'file-with-bad-line.xml',
+        'file-with-junk.xml',
+        'non-clover.xml',
+    ]);