Implement verify_signature, check_integrity, and get_system_profile functions

tests/unit-tests.c

@@ -44,6 +44,41 @@ test_init_config(void)
 	CU_ASSERT_TRUE(init_config());
 }
 
+void
+test_verify_signature(void)
+{
+	/* This test assumes that both files exist in the test environment */
+	CU_ASSERT_EQUAL(verify_signature("test_files/package.tar", "test_files/package.tar.sig"), 0);
+	
+	/* Test with non-existent files */
+	CU_ASSERT_EQUAL(verify_signature("non_existent_file.tar", "non_existent_file.tar.sig"), 2);
+}
+
+void
+test_check_integrity(void)
+{
+	/* This test assumes that test_files/package.tar exists in the test environment
+	   with a known hash value for testing */
+	char *valid_hash = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"; /* Empty file hash */
+	
+	/* Test file existence check */
+	CU_ASSERT_EQUAL(check_integrity("non_existent_file.tar", valid_hash), 2);
+	
+	/* Note: For actual hash comparison testing, we would need a real file with known hash.
+	   These tests would need to be adjusted with real files and hashes for proper testing. */
+}
+
+void
+test_get_system_profile(void)
+{
+	/* Ensure that get_system_profile doesn't return NULL */
+	CU_ASSERT_PTR_NOT_NULL(get_system_profile());
+	
+	/* Ensure the profile format seems correct (contains a dash) */
+	const char *profile = get_system_profile();
+	CU_ASSERT_TRUE(strchr(profile, '-') != NULL);
+}
+
 int
 main(void)
 {
@@ -75,7 +110,26 @@ main(void)
 		return CU_get_error();
 	}
 
-
+	CU_pSuite security_tests = CU_add_suite("Security Functions Suite", NULL, NULL);
+	if (! security_tests) {
+		CU_cleanup_registry();
+		return CU_get_error();
+	}
+	
+	if (! CU_add_test(security_tests, "test of verify_signature()", test_verify_signature)) {
+		CU_cleanup_registry();
+		return CU_get_error();
+	}
+	
+	if (! CU_add_test(security_tests, "test of check_integrity()", test_check_integrity)) {
+		CU_cleanup_registry();
+		return CU_get_error();
+	}
+	
+	if (! CU_add_test(runtime_tests, "test of get_system_profile()", test_get_system_profile)) {
+		CU_cleanup_registry();
+		return CU_get_error();
+	}
 
 	CU_basic_run_tests();
 	CU_cleanup_registry();