kunit: print the mock function and input parameters in the failure
message of EXPECT_CALL.

To store the mock function and its input, we add a new field to
the mock_expectation. The change in include/test/mock.h is brought
from Google-Bug-Id(113269240#4, by Daniel Latypov).

Google-Bug-Id: 113269240
Signed-off-by: Lin Xinan <linxinan@google.com>
Change-Id: Ia4aaa0c1c4125c7c3205c15eeaa9c6000063642f

include/test/mock.h

diff --git a/include/test/mock.h b/include/test/mock.h
index e599d21..1796adc 100644
--- a/include/test/mock.h
+++ b/include/test/mock.h
@@ -87,6 +87,7 @@ struct mock_expectation {
 	int times_called;
 	const char *file_name;
 	int line_no;
+	const char* expectation_text;
 	/* internal list of prerequisites */
 	struct list_head prerequisites;
 };
@@ -261,15 +262,18 @@ static inline bool is_naggy_mock(struct mock *mock)
  * allowing additional conditions and actions to be specified.
  */
 #define EXPECT_CALL(expectation_call) \
-	expect_call_wrapper(__FILE__, __LINE__, mock_master_##expectation_call)
+	expect_call_wrapper(__FILE__, __LINE__, \
+			    #expectation_call, mock_master_##expectation_call)
 
 static inline struct mock_expectation *expect_call_wrapper(
 	const char *file_name,
 	int line_no,
+	const char* expectation_text,
 	struct mock_expectation *expectation)
 {
 	expectation->file_name = file_name;
 	expectation->line_no = line_no;
+	expectation->expectation_text = expectation_text;
 	return expectation;
 }
 

test/mock.c

diff --git a/test/mock.c b/test/mock.c
index 7dc9576..ca8aedb 100644
--- a/test/mock.c
+++ b/test/mock.c
@@ -459,7 +459,8 @@ static struct mock_expectation *mock_apply_expectations(
 		expectations_all_saturated = false;
 
 		attempted_matching_stream->add(attempted_matching_stream,
-			"Tried expectation: %s, but\n", ret->expectation_name);
+			"Tried expectation: %s at %s:%d, but\n",
+			ret->expectation_text, ret->file_name, ret->line_no);
 		if (does_mock_expectation_match_call(ret,
 			attempted_matching_stream, params, len)) {
 			/*