lib-mail: Add unit test for message detail address parser

src/lib-mail/test-message-address.c

@@ -295,10 +295,56 @@ static void test_message_address(void)
 	test_end();
 }
 
+static void test_message_delim(void) {
+	test_begin("message address detail parsing");
+
+	struct {
+		const char *delimiters;
+		const char *address;
+		const char *username;
+		const char *detail;
+		char delim;
+	} tests[] = {
+		{ "", "", "", "", '\0' },
+		{ "", "test", "test", "", '\0' },
+		{ "", "test+address", "test+address", "", '\0' },
+		{ "", "test:address", "test:address", "", '\0' },
+		{ "", "test-address:another+delim", "test-address:another+delim", "", '\0' },
+		{ "", "test@domain", "test@domain", "", '\0' },
+		{ "", "test+address@domain", "test+address@domain", "", '\0' },
+		{ "", "test:address@domain", "test:address@domain", "", '\0' },
+		{ "", "test-address:another+delim@domain", "test-address:another+delim@domain", "", '\0' },
+
+		{ "+-:", "", "", "", '\0' },
+		{ "+-:", "test", "test", "", '\0' },
+		{ "+-:", "test+address", "test", "address", '+' },
+		{ "+-:", "test:address", "test", "address", ':' },
+		{ "+-:", "test-address:another+delim", "test", "address:another+delim", '-' },
+		{ "+-:", "test@domain", "test@domain", "", '\0' },
+		{ "+-:", "test+address@domain", "test@domain", "address", '+' },
+		{ "+-:", "test:address@domain", "test@domain", "address", ':' },
+		{ "+-:", "test-address:another+delim@domain", "test@domain", "address:another+delim", '-' }
+	};
+
+	for(size_t i = 0; i < N_ELEMENTS(tests); i++) {
+		const char *username, *detail;
+		char delim;
+
+		message_detail_address_parse(tests[i].delimiters, tests[i].address,
+					     &username, &delim, &detail);
+		test_assert_idx(strcmp(username, tests[i].username) == 0, i);
+		test_assert_idx(strcmp(detail, tests[i].detail) == 0, i);
+		test_assert_idx(delim == tests[i].delim, i);
+	}
+
+	test_end();
+}
+
 int main(void)
 {
 	static void (*const test_functions[])(void) = {
 		test_message_address,
+		test_message_delim,
 		NULL
 	};
 	return test_run(test_functions);