test_lib: add return value to git_test

Save the return value of functions not passing must_pass() and report
the returned error.

Signed-off-by: schu <schu-github@schulog.org>

tests/test_lib.c

@@ -16,6 +16,8 @@ struct git_test {
 	char *failed_pos;
 	char *description;
 
+	int ret_value;
+
 	git_testfunc function;
 	unsigned failed:1, ran:1;
 	jmp_buf *jump;
@@ -60,6 +62,7 @@ static git_test *create_test(git_testfunc function)
 	t->ran = 0;
 	t->description = NULL;
 	t->message = NULL;
+	t->ret_value = 0;
 	t->failed_pos = NULL;
 	t->function = function;
 	t->jump = NULL;
@@ -78,7 +81,7 @@ void git_test__init(git_test *t, const char *name, const char *description)
  * Public assert methods
  *-------------------------------------------------------------------------*/
 
-static void fail_test(git_test *tc, const char *file, int line, const char *message)
+static void fail_test(git_test *tc, const char *file, int line, const char *message, int ret_value)
 {
 	char buf[1024];
 
@@ -86,6 +89,7 @@ static void fail_test(git_test *tc, const char *file, int line, const char *mess
 
 	tc->failed = 1;
 	tc->message = strdup(message);
+	tc->ret_value = ret_value;
 	tc->failed_pos = strdup(buf);
 
 	if (tc->jump != 0)
@@ -94,13 +98,19 @@ static void fail_test(git_test *tc, const char *file, int line, const char *mess
 
 void git_test__fail(git_test *tc, const char *file, int line, const char *message)
 {
-	fail_test(tc, file, line, message);
+	fail_test(tc, file, line, message, 0);
 }
 
 void git_test__assert(git_test *tc, const char *file, int line, const char *message, int condition)
 {
 	if (condition == 0)
-		fail_test(tc, file, line, message);
+		fail_test(tc, file, line, message, 0);
+}
+
+void git_test__assert_pass(git_test *tc, const char *file, int line, const char *message, int ret_value)
+{
+	if (ret_value < 0)
+		fail_test(tc, file, line, message, ret_value);
 }
 
 /*-------------------------------------------------------------------------*
@@ -157,6 +167,8 @@ static void print_details(git_testsuite *ts)
 				failCount++;
 				printf("  %d) \"%s\" [test %s @ %s]\n\t%s\n",
 					failCount, tc->description, tc->name, tc->failed_pos, tc->message);
+				if (tc->ret_value)
+					printf("\tError: (%d) %s\n", tc->ret_value, git_lasterror());
 			}
 		}
 	}

tests/test_lib.h

@@ -38,8 +38,9 @@ typedef git_testsuite *(*libgit2_suite)(void);
 void git_test__init(git_test *t, const char *name, const char *description);
 void git_test__fail(git_test *tc, const char *file, int line, const char *message);
 void git_test__assert(git_test *tc, const char *file, int line, const char *message, int condition);
+void git_test__assert_pass(git_test *tc, const char *file, int line, const char *message, int ret_value);
 
-#define must_pass(expr) git_test__assert(_gittest, __FILE__, __LINE__, "Method failed: " #expr, (expr) == 0)
+#define must_pass(expr) git_test__assert_pass(_gittest, __FILE__, __LINE__, "Method failed: " #expr, (expr))
 #define must_fail(expr) git_test__assert(_gittest, __FILE__, __LINE__, "Expected method to fail: " #expr, (expr) < 0)
 #define must_be_true(expr) git_test__assert(_gittest, __FILE__, __LINE__, "Expression is not true: " #expr, !!(expr))