Merge pull request #324 from farrrb/origin/fix-UNITY_OUTPUT_FLUSH

Re: Fix custom UNITY_OUTPUT_FLUSH and add tests #287

docs/UnityConfigurationGuide.md

@@ -248,7 +248,8 @@ _Example:_
 Say you are forced to run your test suite on an embedded processor with no
 `stdout` option. You decide to route your test result output to a custom serial
 `RS232_putc()` function you wrote like thus:
-
+        #include "RS232_header.h"
+        ...
         #define UNITY_OUTPUT_CHAR(a) RS232_putc(a)
         #define UNITY_OUTPUT_START() RS232_config(115200,1,8,0)
         #define UNITY_OUTPUT_FLUSH() RS232_flush()
@@ -256,10 +257,7 @@ Say you are forced to run your test suite on an embedded processor with no
 
 _Note:_
 `UNITY_OUTPUT_FLUSH()` can be set to the standard out flush function simply by
-specifying `UNITY_USE_FLUSH_STDOUT`. No other defines are required. If you
-specify a custom flush function instead with `UNITY_OUTPUT_FLUSH` directly, it
-will declare an instance of your function by default. If you want to disable
-this behavior, add `UNITY_OMIT_OUTPUT_FLUSH_HEADER_DECLARATION`.
+specifying `UNITY_USE_FLUSH_STDOUT`. No other defines are required.
 
 
 ##### `UNITY_WEAK_ATTRIBUTE`

src/unity_internals.h

@@ -241,30 +241,30 @@ typedef UNITY_FLOAT_TYPE UNITY_FLOAT;
  * Output Method: stdout (DEFAULT)
  *-------------------------------------------------------*/
 #ifndef UNITY_OUTPUT_CHAR
-/* Default to using putchar, which is defined in stdio.h */
-#include <stdio.h>
-#define UNITY_OUTPUT_CHAR(a) (void)putchar(a)
+  /* Default to using putchar, which is defined in stdio.h */
+  #include <stdio.h>
+  #define UNITY_OUTPUT_CHAR(a) (void)putchar(a)
 #else
   /* If defined as something else, make sure we declare it here so it's ready for use */
   #ifdef UNITY_OUTPUT_CHAR_HEADER_DECLARATION
-extern void UNITY_OUTPUT_CHAR_HEADER_DECLARATION;
+    extern void UNITY_OUTPUT_CHAR_HEADER_DECLARATION;
   #endif
 #endif
 
 #ifndef UNITY_OUTPUT_FLUSH
-#ifdef UNITY_USE_FLUSH_STDOUT
-/* We want to use the stdout flush utility */
-#include <stdio.h>
-#define UNITY_OUTPUT_FLUSH() (void)fflush(stdout)
+  #ifdef UNITY_USE_FLUSH_STDOUT
+    /* We want to use the stdout flush utility */
+    #include <stdio.h>
+    #define UNITY_OUTPUT_FLUSH() (void)fflush(stdout)
+  #else
+    /* We've specified nothing, therefore flush should just be ignored */
+    #define UNITY_OUTPUT_FLUSH()
+  #endif
 #else
-/* We've specified nothing, therefore flush should just be ignored */
-#define UNITY_OUTPUT_FLUSH()
-#endif
-#else
-/* We've defined flush as something else, so make sure we declare it here so it's ready for use */
-#ifdef UNITY_OUTPUT_FLUSH_HEADER_DECLARATION
-extern void UNITY_OMIT_OUTPUT_FLUSH_HEADER_DECLARATION;
-#endif
+  /* If defined as something else, make sure we declare it here so it's ready for use */
+  #ifdef UNITY_OUTPUT_FLUSH_HEADER_DECLARATION
+    extern void UNITY_OUTPUT_FLUSH_HEADER_DECLARATION;
+  #endif
 #endif
 
 #ifndef UNITY_OUTPUT_FLUSH

test/Makefile

@@ -15,6 +15,8 @@ CFLAGS += -Wbad-function-cast -Wcast-qual -Wold-style-definition -Wshadow -Wstri
 CFLAGS += $(DEBUG)
 DEFINES =  -D UNITY_OUTPUT_CHAR=putcharSpy
 DEFINES += -D UNITY_OUTPUT_CHAR_HEADER_DECLARATION=putcharSpy\(int\)
+DEFINES += -D UNITY_OUTPUT_FLUSH=flushSpy
+DEFINES += -D UNITY_OUTPUT_FLUSH_HEADER_DECLARATION=flushSpy\(void\)
 DEFINES += $(UNITY_SUPPORT_64) $(UNITY_INCLUDE_DOUBLE)
 UNITY_SUPPORT_64 = -D UNITY_SUPPORT_64
 UNITY_INCLUDE_DOUBLE = -D UNITY_INCLUDE_DOUBLE

test/testdata/testRunnerGenerator.c

@@ -21,7 +21,10 @@
 
 /* Support for Meta Test Rig */
 #define TEST_CASE(a)
-void putcharSpy(int c) { (void)putchar(c);} // include passthrough for linking tests
+
+/* Include Passthroughs for Linking Tests */
+void putcharSpy(int c) { (void)putchar(c);}
+void flushSpy(void) {}
 
 /* Global Variables Used During These Tests */
 int CounterSetup = 0;

test/testdata/testRunnerGeneratorSmall.c

@@ -13,7 +13,10 @@ TEST_FILE("some_file.c")
 
 /* Support for Meta Test Rig */
 #define TEST_CASE(a)
-void putcharSpy(int c) { (void)putchar(c);} // include passthrough for linking tests
+
+/* Include Passthroughs for Linking Tests */
+void putcharSpy(int c) { (void)putchar(c);}
+void flushSpy(void) {}
 
 /* Global Variables Used During These Tests */
 int CounterSetup = 0;

test/testdata/testRunnerGeneratorWithMocks.c

@@ -22,7 +22,10 @@
 
 /* Support for Meta Test Rig */
 #define TEST_CASE(a)
-void putcharSpy(int c) { (void)putchar(c);} // include passthrough for linking tests
+
+/* Include Passthroughs for Linking Tests */
+void putcharSpy(int c) { (void)putchar(c);}
+void flushSpy(void) {}
 
 /* Global Variables Used During These Tests */
 int CounterSetup = 0;

test/tests/testparameterized.c

@@ -8,10 +8,13 @@
 #include <stdio.h>
 #include "unity.h"
 
-void putcharSpy(int c) { (void)putchar(c);} // include passthrough for linking tests
-
+/* Support for Meta Test Rig */
 #define TEST_CASE(...)
 
+/* Include Passthroughs for Linking Tests */
+void putcharSpy(int c) { (void)putchar(c);}
+void flushSpy(void) {}
+
 #define EXPECT_ABORT_BEGIN \
     if (TEST_PROTECT())    \
     {

test/tests/testunity.c

@@ -54,6 +54,10 @@ void startPutcharSpy(void);
 void endPutcharSpy(void);
 char* getBufferPutcharSpy(void);
 
+void startFlushSpy(void);
+void endFlushSpy(void);
+int getFlushSpyCalls(void);
+
 static int SetToOneToFailInTearDown;
 static int SetToOneMeanWeAlreadyCheckedThisGuy;
 
@@ -3335,14 +3339,35 @@ void putcharSpy(int c)
 #endif
 }
 
+/* This is for counting the calls to the flushSpy */
+static int flushSpyEnabled;
+static int flushSpyCalls = 0;
+
+void startFlushSpy(void) { flushSpyCalls = 0; flushSpyEnabled = 1; }
+void endFlushSpy(void) { flushSpyCalls = 0; flushSpyEnabled = 0; }
+int getFlushSpyCalls(void) { return flushSpyCalls; }
+
+void flushSpy(void)
+{
+    if (flushSpyEnabled){ flushSpyCalls++; }
+}
+
 void testFailureCountIncrementsAndIsReturnedAtEnd(void)
 {
     UNITY_UINT savedFailures = Unity.TestFailures;
     Unity.CurrentTestFailed = 1;
     startPutcharSpy(); // Suppress output
+    startFlushSpy();
+    TEST_ASSERT_EQUAL(0, getFlushSpyCalls());
     UnityConcludeTest();
     endPutcharSpy();
     TEST_ASSERT_EQUAL(savedFailures + 1, Unity.TestFailures);
+#if defined(UNITY_OUTPUT_FLUSH) && defined(UNITY_OUTPUT_FLUSH_HEADER_DECLARATION)
+    TEST_ASSERT_EQUAL(1, getFlushSpyCalls());
+#else
+    TEST_ASSERT_EQUAL(0, getFlushSpyCalls());
+#endif
+    endFlushSpy();
 
     startPutcharSpy(); // Suppress output
     int failures = UnityEnd();
@@ -3412,6 +3437,7 @@ void testPrintNumbersUnsigned32(void)
 #endif
 }
 
+
 // ===================== THESE TEST WILL RUN IF YOUR CONFIG INCLUDES 64 BIT SUPPORT ==================
 
 void testPrintNumbersInt64(void)