TestCorsHandler handler = new TestCorsHandler("example-handler");
        corsHandlerFactory.add(origin, handler);

        // Execute
        CorsHandler result = corsHandlerFactory.get("https://nonexistent.com");

        // Verify
        assertNull(result);
    }

    @Test
    public void test_add_overwriteExistingOrigin() {
        // Setup
        String origin = "https://example.com";

    @Test
    public void test_provide_notFound() {
        // Test with various classification names that should not be found
        assertProvideThrowsException("TestClassification");
        assertProvideThrowsException("NonExistent");
        assertProvideThrowsException("");
        assertProvideThrowsException("Some.Classification");
        assertProvideThrowsException("Project.TestClassification");
    }

    @Test

        // Test that Files.deleteIfExists doesn't throw on non-existing file
        Path tempDir = Files.createTempDirectory("toctou_test");
        try {
            Path nonExistingFile = tempDir.resolve("non_existing.tmp");
            assertFalse(Files.exists(nonExistingFile));

            // Should return false without throwing exception
            boolean deleted = Files.deleteIfExists(nonExistingFile);