From c6262360d067fb988e06266865701bee9ddf4231 Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Thu, 16 Jun 2022 21:14:36 -0500
Subject: add helper macros for mocking

---
 src/logging/logging.test.c | 25 +++++++++----------------
 src/test/honey-test.h      | 19 +++++++++++++++++++
 2 files changed, 28 insertions(+), 16 deletions(-)

diff --git a/src/logging/logging.test.c b/src/logging/logging.test.c
index dfcbe4e..a796903 100644
--- a/src/logging/logging.test.c
+++ b/src/logging/logging.test.c
@@ -2,7 +2,6 @@
 #include <stdarg.h>
 #include <stdio.h>
 
-#include "test/lily-test.h"
 #include "test/honey-test.h"
 
 /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -24,8 +23,7 @@ void mock_vfprintf(FILE*, const char*, va_list vl);
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
-lily_mock_t *vfprintf_mock_data;
-void mock_vfprintf(FILE *file, const char *fmt, va_list vl)
+MOCK(mock_vfprintf)(FILE *file, const char *fmt, va_list vl)
 {
 	/* to avoid basically just re-implementing printf parsing here,
 	   i am limiting this function to be able to receive strings only */
@@ -44,10 +42,10 @@ void mock_vfprintf(FILE *file, const char *fmt, va_list vl)
 		{ sizeof(const char*), &fmt },
 		{ sizeof(int), &n_args },
 	};
-	lily_mock_call(vfprintf_mock_data, args);
+	lily_mock_call(mock_vfprintf_data, args);
 
 	/* store format arguments */
-	lily_queue_t *queue = vfprintf_mock_data->values;
+	lily_queue_t *queue = mock_vfprintf_data->values;
 	for (int i=0; i<n_args; i++) {
 		char *str = va_arg(vl, char*);
 		lily_enqueue(queue, char*, str);
@@ -75,13 +73,10 @@ void level_neg_log_fatal_fails();
 
 void suite_logging()
 {
-	vfprintf_mock_data = NULL;
-
 	lily_run_test(level_neg_log_fatal_fails);
 	lily_run_test(level_fatal_log_fatal_succeeds);
 
-	if (vfprintf_mock_data != NULL)
-		lily_mock_destroy(vfprintf_mock_data);
+	CLEAN_MOCK(mock_vfprintf);
 }
 
 
@@ -94,12 +89,11 @@ void suite_logging()
 
 void level_fatal_log_fatal_succeeds()
 {
-	clean_mock(&vfprintf_mock_data);
-	vfprintf_mock_data = lily_mock_create();
+	USE_MOCK(mock_vfprintf);
 
 	honey_set_log_level(HONEY_FATAL);
 	honey_fatal("some message");
-	lily_assert_int_equal(vfprintf_mock_data->n_calls, 1);
+	lily_assert_int_equal(mock_vfprintf_data->n_calls, 1);
 
 	FILE *file; const char *fmt; int n_strings;
 	struct lily_mock_arg_t args[] = {
@@ -107,7 +101,7 @@ void level_fatal_log_fatal_succeeds()
 		{ sizeof(const char*), &fmt },
 		{ sizeof(int), &n_strings },
 	};
-	lily_get_call(vfprintf_mock_data, args, 0);
+	lily_get_call(mock_vfprintf_data, args, 0);
 
 	lily_assert_ptr_equal(file, stderr);
 	lily_assert_string_equal((char*) fmt, "[FATAL] some message");
@@ -117,10 +111,9 @@ void level_fatal_log_fatal_succeeds()
 
 void level_neg_log_fatal_fails()
 {
-	clean_mock(&vfprintf_mock_data);
-	vfprintf_mock_data = lily_mock_create();
+	USE_MOCK(mock_vfprintf);
 
 	honey_set_log_level(-1);
 	honey_fatal("some message");
-	lily_assert_int_equal(vfprintf_mock_data->n_calls, 0);
+	lily_assert_int_equal(mock_vfprintf_data->n_calls, 0);
 }
diff --git a/src/test/honey-test.h b/src/test/honey-test.h
index 65bd959..ac79d8a 100644
--- a/src/test/honey-test.h
+++ b/src/test/honey-test.h
@@ -3,6 +3,25 @@
 
 #include "lily-test.h"
 
+#define MOCK(name) \
+	lily_mock_t * name ## _data = NULL; \
+	void name
+
+#define CLEAN_MOCK(name) \
+	do { \
+		if (name ## _data != NULL) { \
+			lily_mock_destroy(name ## _data); \
+			name ## _data = NULL; \
+		} \
+	} while(0)
+
+#define USE_MOCK(name) \
+	do { \
+		CLEAN_MOCK(name); \
+		name ## _data = lily_mock_create(); \
+	} while(0)
+
+
 void suite_logging();
 
 #define RUN_TESTS() \
-- 
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