fix: tia

tests/Unit/Plugins/Tia/Graph.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+use Pest\Plugins\Tia\Graph;
+
+describe('markKnownTestFiles()', function (): void {
+    it('makes a test file with no edges known', function (): void {
+        $graph = new Graph(sys_get_temp_dir());
+
+        expect($graph->knowsTest('tests/Unit/ExampleTest.php'))->toBeFalse();
+
+        $graph->markKnownTestFiles(['tests/Unit/ExampleTest.php']);
+
+        expect($graph->knowsTest('tests/Unit/ExampleTest.php'))->toBeTrue();
+    });
+
+    it('does not clobber edges of an already-known test file', function (): void {
+        $graph = new Graph(sys_get_temp_dir());
+        $graph->link('tests/Feature/UserTest.php', 'app/Models/User.php');
+
+        $graph->markKnownTestFiles(['tests/Feature/UserTest.php']);
+
+        // The pre-existing edge survives — the test still depends on the source file.
+        $affected = $graph->affected(['app/Models/User.php']);
+
+        expect($affected)->toContain('tests/Feature/UserTest.php');
+    });
+
+    it('ignores paths outside the project root', function (): void {
+        $graph = new Graph(sys_get_temp_dir());
+
+        $graph->markKnownTestFiles(['/somewhere/else/tests/FooTest.php']);
+
+        expect($graph->knowsTest('/somewhere/else/tests/FooTest.php'))->toBeFalse();
+    });
+});

tests/Unit/Plugins/Tia/TestPaths.php

@@ -0,0 +1,72 @@
+<?php
+
+declare(strict_types=1);
+
+use Pest\Plugins\Tia\TestPaths;
+
+describe('isTestFile()', function (): void {
+    it('matches a standard test file under a configured directory', function (): void {
+        $paths = new TestPaths(
+            directories: ['tests/Unit', 'tests/Feature'],
+            files: [],
+            suffixes: ['Test.php'],
+        );
+
+        expect($paths->isTestFile('tests/Unit/ExampleTest.php'))->toBeTrue()
+            ->and($paths->isTestFile('tests/Feature/UserTest.php'))->toBeTrue();
+    });
+
+    it('does not match a non-test file that shares the directory', function (): void {
+        $paths = new TestPaths(
+            directories: ['tests/Unit'],
+            files: [],
+            suffixes: ['Test.php'],
+        );
+
+        expect($paths->isTestFile('tests/Unit/Helper.php'))->toBeFalse();
+    });
+
+    it('does not match files outside the configured directories', function (): void {
+        $paths = new TestPaths(
+            directories: ['tests/Unit'],
+            files: [],
+            suffixes: ['Test.php'],
+        );
+
+        expect($paths->isTestFile('app/Models/UserTest.php'))->toBeFalse();
+    });
+
+    it('matches an explicitly listed file', function (): void {
+        $paths = new TestPaths(
+            directories: [],
+            files: ['tests/Pest.php'],
+            suffixes: ['Test.php'],
+        );
+
+        expect($paths->isTestFile('tests/Pest.php'))->toBeTrue();
+    });
+
+    it('honours a bare .php suffix', function (): void {
+        $paths = new TestPaths(
+            directories: ['tests'],
+            files: [],
+            suffixes: ['.php'],
+        );
+
+        expect($paths->isTestFile('tests/Unit/ExampleTest.php'))->toBeTrue()
+            ->and($paths->isTestFile('tests/Unit/Helper.php'))->toBeTrue();
+    });
+
+    // Regression: a suffix of "Test.php" must match "ExampleTest.php". A previous
+    // normalisation prepended a dot (".Test.php"), which matched nothing and left
+    // edited tests looking unchanged to TIA, replaying stale results.
+    it('does not require a dot before the suffix', function (): void {
+        $paths = new TestPaths(
+            directories: ['tests/Unit'],
+            files: [],
+            suffixes: ['.Test.php'],
+        );
+
+        expect($paths->isTestFile('tests/Unit/ExampleTest.php'))->toBeFalse();
+    });
+});