[PATCH 2/3] selftests: improve reported failure locations
David Malcolm
dmalcolm@redhat.com
Thu Jun 9 18:15:00 GMT 2016
This patch introduce a selftest::location struct to wrap up __FILE__
and __LINE__ information (and __FUNCTION__) throughout the selftests,
allowing location information to be passed around.
It updates the helper functions in pretty-print.c to pass through
the precise location of each test, so that if a failure occurs, the
correct line number is printed, rather than a line within a helper
function.
gcc/ChangeLog:
* input.c (test_reading_source_line): Use SELFTEST_LOCATION.
* pretty-print.c (assert_pp_format_va): Add location param and use
it with ASSERT_STREQ_AT.
(assert_pp_format): Add location param and pass it to
assert_pp_format_va.
(assert_pp_format_colored): Likewise.
(ASSERT_PP_FORMAT_1): New.
(ASSERT_PP_FORMAT_2): New.
(ASSERT_PP_FORMAT_3): New.
(test_pp_format): Provide SELFTEST_LOCATION throughout, either
explicitly, or implicitly via the above macros.
* selftest.c (selftest::pass): Use a selftest::location rather
than file and line.
(selftest::fail): Likewise. Print the function name.
(selftest::fail_formatted): Likewise.
(selftest::assert_streq): Use a selftest::location rather than
file and line.
* selftest.h (selftest::location): New struct.
(SELFTEST_LOCATION): New macro.
(selftest::pass): Accept a const location & rather than file
and line.
(selftest::fail): Likewise.
(selftest::fail_formatted): Likewise.
(selftest::assert_streq): Likewise.
(ASSERT_TRUE): Update for above changes, using SELFTEST_LOCATION.
(ASSERT_FALSE): Likewise.
(ASSERT_EQ): Likewise.
(ASSERT_NE): Likewise.
(ASSERT_STREQ): Likewise.
(ASSERT_PRED1): Likewise.
(ASSERT_STREQ_AT): New macro.
---
gcc/input.c | 4 +-
gcc/pretty-print.c | 128 ++++++++++++++++++++++++++++++++---------------------
gcc/selftest.c | 20 ++++-----
gcc/selftest.h | 60 ++++++++++++++++++-------
4 files changed, 134 insertions(+), 78 deletions(-)
diff --git a/gcc/input.c b/gcc/input.c
index 0b340a8..704ee75 100644
--- a/gcc/input.c
+++ b/gcc/input.c
@@ -1231,10 +1231,10 @@ test_reading_source_line ()
ASSERT_EQ (53, line_size);
if (!strncmp (" The quick brown fox jumps over the lazy dog. */",
source_line, line_size))
- ::selftest::pass (__FILE__, __LINE__,
+ ::selftest::pass (SELFTEST_LOCATION,
"source_line matched expected value");
else
- ::selftest::fail (__FILE__, __LINE__,
+ ::selftest::fail (SELFTEST_LOCATION,
"source_line did not match expected value");
}
diff --git a/gcc/pretty-print.c b/gcc/pretty-print.c
index 8febda0..86ae3a5 100644
--- a/gcc/pretty-print.c
+++ b/gcc/pretty-print.c
@@ -1227,8 +1227,8 @@ test_basic_printing ()
prints EXPECTED, assuming that pp_show_color is SHOW_COLOR. */
static void
-assert_pp_format_va (const char *expected, bool show_color, const char *fmt,
- va_list *ap)
+assert_pp_format_va (const location &loc, const char *expected,
+ bool show_color, const char *fmt, va_list *ap)
{
pretty_printer pp;
text_info ti;
@@ -1243,34 +1243,59 @@ assert_pp_format_va (const char *expected, bool show_color, const char *fmt,
pp_show_color (&pp) = show_color;
pp_format (&pp, &ti);
pp_output_formatted_text (&pp);
- ASSERT_STREQ (expected, pp_formatted_text (&pp));
+ ASSERT_STREQ_AT (loc, expected, pp_formatted_text (&pp));
}
/* Verify that pp_format (FMT, ...) followed by pp_output_formatted_text
prints EXPECTED, with show_color disabled. */
static void
-assert_pp_format (const char *expected, const char *fmt, ...)
+assert_pp_format (const location &loc, const char *expected,
+ const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
- assert_pp_format_va (expected, false, fmt, &ap);
+ assert_pp_format_va (loc, expected, false, fmt, &ap);
va_end (ap);
}
/* As above, but with colorization enabled. */
static void
-assert_pp_format_colored (const char *expected, const char *fmt, ...)
+assert_pp_format_colored (const location &loc, const char *expected,
+ const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
- assert_pp_format_va (expected, true, fmt, &ap);
+ assert_pp_format_va (loc, expected, true, fmt, &ap);
va_end (ap);
}
+/* Helper function for calling testing pp_format,
+ by calling assert_pp_format with various numbers of arguments.
+ These exist mostly to avoid having to write SELFTEST_LOCATION
+ throughout test_pp_format. */
+
+#define ASSERT_PP_FORMAT_1(EXPECTED, FMT, ARG1) \
+ SELFTEST_BEGIN_STMT \
+ assert_pp_format ((SELFTEST_LOCATION), (EXPECTED), (FMT), \
+ (ARG1)); \
+ SELFTEST_END_STMT
+
+#define ASSERT_PP_FORMAT_2(EXPECTED, FMT, ARG1, ARG2) \
+ SELFTEST_BEGIN_STMT \
+ assert_pp_format ((SELFTEST_LOCATION), (EXPECTED), (FMT), \
+ (ARG1), (ARG2)); \
+ SELFTEST_END_STMT
+
+#define ASSERT_PP_FORMAT_3(EXPECTED, FMT, ARG1, ARG2, ARG3) \
+ SELFTEST_BEGIN_STMT \
+ assert_pp_format ((SELFTEST_LOCATION), (EXPECTED), (FMT), \
+ (ARG1), (ARG2), (ARG3)); \
+ SELFTEST_END_STMT
+
/* Verify that pp_format works, for various format codes. */
static void
@@ -1284,68 +1309,71 @@ test_pp_format ()
close_quote = "'";
/* Verify that plain text is passed through unchanged. */
- assert_pp_format ("unformatted", "unformatted");
+ assert_pp_format (SELFTEST_LOCATION, "unformatted", "unformatted");
/* Verify various individual format codes, in the order listed in the
comment for pp_format above. For each code, we append a second
argument with a known bit pattern (0x12345678), to ensure that we
are consuming arguments correctly. */
- assert_pp_format ("-27 12345678", "%d %x", -27, 0x12345678);
- assert_pp_format ("-5 12345678", "%i %x", -5, 0x12345678);
- assert_pp_format ("10 12345678", "%u %x", 10, 0x12345678);
- assert_pp_format ("17 12345678", "%o %x", 15, 0x12345678);
- assert_pp_format ("cafebabe 12345678", "%x %x", 0xcafebabe, 0x12345678);
- assert_pp_format ("-27 12345678", "%ld %x", (long)-27, 0x12345678);
- assert_pp_format ("-5 12345678", "%li %x", (long)-5, 0x12345678);
- assert_pp_format ("10 12345678", "%lu %x", (long)10, 0x12345678);
- assert_pp_format ("17 12345678", "%lo %x", (long)15, 0x12345678);
- assert_pp_format ("cafebabe 12345678", "%lx %x", (long)0xcafebabe,
- 0x12345678);
- assert_pp_format ("-27 12345678", "%lld %x", (long long)-27, 0x12345678);
- assert_pp_format ("-5 12345678", "%lli %x", (long long)-5, 0x12345678);
- assert_pp_format ("10 12345678", "%llu %x", (long long)10, 0x12345678);
- assert_pp_format ("17 12345678", "%llo %x", (long long)15, 0x12345678);
- assert_pp_format ("cafebabe 12345678", "%llx %x", (long long)0xcafebabe,
- 0x12345678);
- assert_pp_format ("-27 12345678", "%wd %x", (HOST_WIDE_INT)-27, 0x12345678);
- assert_pp_format ("-5 12345678", "%wi %x", (HOST_WIDE_INT)-5, 0x12345678);
- assert_pp_format ("10 12345678", "%wu %x", (unsigned HOST_WIDE_INT)10,
- 0x12345678);
- assert_pp_format ("17 12345678", "%wo %x", (HOST_WIDE_INT)15, 0x12345678);
- assert_pp_format ("0xcafebabe 12345678", "%wx %x", (HOST_WIDE_INT)0xcafebabe,
- 0x12345678);
- assert_pp_format ("A 12345678", "%c %x", 'A', 0x12345678);
- assert_pp_format ("hello world 12345678", "%s %x", "hello world",
- 0x12345678);
+ ASSERT_PP_FORMAT_2 ("-27 12345678", "%d %x", -27, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("-5 12345678", "%i %x", -5, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("10 12345678", "%u %x", 10, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("17 12345678", "%o %x", 15, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("cafebabe 12345678", "%x %x", 0xcafebabe, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("-27 12345678", "%ld %x", (long)-27, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("-5 12345678", "%li %x", (long)-5, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("10 12345678", "%lu %x", (long)10, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("17 12345678", "%lo %x", (long)15, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("cafebabe 12345678", "%lx %x", (long)0xcafebabe,
+ 0x12345678);
+ ASSERT_PP_FORMAT_2 ("-27 12345678", "%lld %x", (long long)-27, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("-5 12345678", "%lli %x", (long long)-5, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("10 12345678", "%llu %x", (long long)10, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("17 12345678", "%llo %x", (long long)15, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("cafebabe 12345678", "%llx %x", (long long)0xcafebabe,
+ 0x12345678);
+ ASSERT_PP_FORMAT_2 ("-27 12345678", "%wd %x", (HOST_WIDE_INT)-27, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("-5 12345678", "%wi %x", (HOST_WIDE_INT)-5, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("10 12345678", "%wu %x", (unsigned HOST_WIDE_INT)10,
+ 0x12345678);
+ ASSERT_PP_FORMAT_2 ("17 12345678", "%wo %x", (HOST_WIDE_INT)15, 0x12345678);
+ ASSERT_PP_FORMAT_2 ("0xcafebabe 12345678", "%wx %x", (HOST_WIDE_INT)0xcafebabe,
+ 0x12345678);
+ ASSERT_PP_FORMAT_2 ("A 12345678", "%c %x", 'A', 0x12345678);
+ ASSERT_PP_FORMAT_2 ("hello world 12345678", "%s %x", "hello world",
+ 0x12345678);
/* We can't test for %p; the pointer is printed in an implementation-defined
manner. */
- assert_pp_format ("normal colored normal 12345678",
- "normal %rcolored%R normal %x",
- "error", 0x12345678);
+ ASSERT_PP_FORMAT_2 ("normal colored normal 12345678",
+ "normal %rcolored%R normal %x",
+ "error", 0x12345678);
/* The following assumes an empty value for GCC_COLORS. */
assert_pp_format_colored
- ("normal \33[01;31m\33[Kcolored\33[m\33[K normal 12345678",
+ (SELFTEST_LOCATION,
+ "normal \33[01;31m\33[Kcolored\33[m\33[K normal 12345678",
"normal %rcolored%R normal %x", "error", 0x12345678);
/* TODO:
%m: strerror(text->err_no) - does not consume a value from args_ptr. */
- assert_pp_format ("% 12345678", "%% %x", 0x12345678);
- assert_pp_format ("` 12345678", "%< %x", 0x12345678);
- assert_pp_format ("' 12345678", "%> %x", 0x12345678);
- assert_pp_format ("' 12345678", "%' %x", 0x12345678);
- assert_pp_format ("abc 12345678", "%.*s %x", 3, "abcdef", 0x12345678);
- assert_pp_format ("abc 12345678", "%.3s %x", "abcdef", 0x12345678);
+ ASSERT_PP_FORMAT_1 ("% 12345678", "%% %x", 0x12345678);
+ ASSERT_PP_FORMAT_1 ("` 12345678", "%< %x", 0x12345678);
+ ASSERT_PP_FORMAT_1 ("' 12345678", "%> %x", 0x12345678);
+ ASSERT_PP_FORMAT_1 ("' 12345678", "%' %x", 0x12345678);
+ ASSERT_PP_FORMAT_3 ("abc 12345678", "%.*s %x", 3, "abcdef", 0x12345678);
+ ASSERT_PP_FORMAT_2 ("abc 12345678", "%.3s %x", "abcdef", 0x12345678);
/* Verify flag 'q'. */
- assert_pp_format ("`foo' 12345678", "%qs %x", "foo", 0x12345678);
- assert_pp_format_colored ("`\33[01m\33[Kfoo\33[m\33[K' 12345678", "%qs %x",
+ ASSERT_PP_FORMAT_2 ("`foo' 12345678", "%qs %x", "foo", 0x12345678);
+ assert_pp_format_colored (SELFTEST_LOCATION,
+ "`\33[01m\33[Kfoo\33[m\33[K' 12345678", "%qs %x",
"foo", 0x12345678);
/* Verify that combinations work, along with unformatted text. */
- assert_pp_format ("the quick brown fox jumps over the lazy dog",
+ assert_pp_format (SELFTEST_LOCATION,
+ "the quick brown fox jumps over the lazy dog",
"the %s %s %s jumps over the %s %s",
"quick", "brown", "fox", "lazy", "dog");
- assert_pp_format ("item 3 of 7", "item %i of %i", 3, 7);
- assert_pp_format ("problem with `bar' at line 10",
+ assert_pp_format (SELFTEST_LOCATION, "item 3 of 7", "item %i of %i", 3, 7);
+ assert_pp_format (SELFTEST_LOCATION, "problem with `bar' at line 10",
"problem with %qs at line %i", "bar", 10);
/* Restore old values of open_quote and close_quote. */
diff --git a/gcc/selftest.c b/gcc/selftest.c
index e5332db..ed6e517 100644
--- a/gcc/selftest.c
+++ b/gcc/selftest.c
@@ -29,7 +29,7 @@ int selftest::num_passes;
/* Record the successful outcome of some aspect of a test. */
void
-selftest::pass (const char */*file*/, int /*line*/, const char */*msg*/)
+selftest::pass (const location &/*loc*/, const char */*msg*/)
{
num_passes++;
}
@@ -37,22 +37,22 @@ selftest::pass (const char */*file*/, int /*line*/, const char */*msg*/)
/* Report the failed outcome of some aspect of a test and abort. */
void
-selftest::fail (const char *file, int line, const char *msg)
+selftest::fail (const location &loc, const char *msg)
{
- fprintf (stderr,"%s:%i: FAIL: %s\n", file, line, msg);
- /* TODO: add calling function name as well? */
+ fprintf (stderr,"%s:%i: %s: FAIL: %s\n", loc.m_file, loc.m_line,
+ loc.m_function, msg);
abort ();
}
/* As "fail", but using printf-style formatted output. */
void
-selftest::fail_formatted (const char *file, int line, const char *fmt, ...)
+selftest::fail_formatted (const location &loc, const char *fmt, ...)
{
va_list ap;
- fprintf (stderr, "%s:%i: FAIL: ", file, line);
- /* TODO: add calling function name as well? */
+ fprintf (stderr, "%s:%i: %s: FAIL: ", loc.m_file, loc.m_line,
+ loc.m_function);
va_start (ap, fmt);
vfprintf (stderr, fmt, ap);
va_end (ap);
@@ -63,15 +63,15 @@ selftest::fail_formatted (const char *file, int line, const char *fmt, ...)
/* Implementation detail of ASSERT_STREQ. */
void
-selftest::assert_streq (const char *file, int line,
+selftest::assert_streq (const location &loc,
const char *desc_expected, const char *desc_actual,
const char *val_expected, const char *val_actual)
{
if (0 == strcmp (val_expected, val_actual))
- ::selftest::pass (file, line, "ASSERT_STREQ");
+ ::selftest::pass (loc, "ASSERT_STREQ");
else
::selftest::fail_formatted
- (file, line, "ASSERT_STREQ (%s, %s) expected=\"%s\" actual=\"%s\"",
+ (loc, "ASSERT_STREQ (%s, %s) expected=\"%s\" actual=\"%s\"",
desc_expected, desc_actual, val_expected, val_actual);
}
diff --git a/gcc/selftest.h b/gcc/selftest.h
index 6759734..e719f5f 100644
--- a/gcc/selftest.h
+++ b/gcc/selftest.h
@@ -27,26 +27,45 @@ along with GCC; see the file COPYING3. If not see
namespace selftest {
+/* A struct describing the source-location of a selftest, to make it
+ easier to track down failing tests. */
+
+struct location
+{
+ location (const char *file, int line, const char *function)
+ : m_file (file), m_line (line), m_function (function) {}
+
+ const char *m_file;
+ int m_line;
+ const char *m_function;
+};
+
+/* A macro for use in selftests and by the ASSERT_ macros below,
+ constructing a selftest::location for the current source location. */
+
+#define SELFTEST_LOCATION \
+ (::selftest::location (__FILE__, __LINE__, __FUNCTION__))
+
/* The entrypoint for running all tests. */
extern void run_tests ();
/* Record the successful outcome of some aspect of the test. */
-extern void pass (const char *file, int line, const char *msg);
+extern void pass (const location &loc, const char *msg);
/* Report the failed outcome of some aspect of the test and abort. */
-extern void fail (const char *file, int line, const char *msg);
+extern void fail (const location &loc, const char *msg);
/* As "fail", but using printf-style formatted output. */
-extern void fail_formatted (const char *file, int line, const char *fmt, ...)
- ATTRIBUTE_PRINTF_3;
+extern void fail_formatted (const location &loc, const char *fmt, ...)
+ ATTRIBUTE_PRINTF_2;
/* Implementation detail of ASSERT_STREQ. */
-extern void assert_streq (const char *file, int line,
+extern void assert_streq (const location &loc,
const char *desc_expected, const char *desc_actual,
const char *val_expected, const char *val_actual);
@@ -85,9 +104,9 @@ extern int num_passes;
const char *desc = "ASSERT_TRUE (" #EXPR ")"; \
bool actual = (EXPR); \
if (actual) \
- ::selftest::pass (__FILE__, __LINE__, desc); \
+ ::selftest::pass (SELFTEST_LOCATION, desc); \
else \
- ::selftest::fail (__FILE__, __LINE__, desc); \
+ ::selftest::fail (SELFTEST_LOCATION, desc); \
SELFTEST_END_STMT
/* Evaluate EXPR and coerce to bool, calling
@@ -99,9 +118,9 @@ extern int num_passes;
const char *desc = "ASSERT_FALSE (" #EXPR ")"; \
bool actual = (EXPR); \
if (actual) \
- ::selftest::fail (__FILE__, __LINE__, desc); \
+ ::selftest::fail (SELFTEST_LOCATION, desc); \
else \
- ::selftest::pass (__FILE__, __LINE__, desc); \
+ ::selftest::pass (SELFTEST_LOCATION, desc); \
SELFTEST_END_STMT
/* Evaluate EXPECTED and ACTUAL and compare them with ==, calling
@@ -112,9 +131,9 @@ extern int num_passes;
SELFTEST_BEGIN_STMT \
const char *desc = "ASSERT_EQ (" #EXPECTED ", " #ACTUAL ")"; \
if ((EXPECTED) == (ACTUAL)) \
- ::selftest::pass (__FILE__, __LINE__, desc); \
+ ::selftest::pass (SELFTEST_LOCATION, desc); \
else \
- ::selftest::fail (__FILE__, __LINE__, desc); \
+ ::selftest::fail (SELFTEST_LOCATION, desc); \
SELFTEST_END_STMT
/* Evaluate EXPECTED and ACTUAL and compare them with !=, calling
@@ -125,9 +144,9 @@ extern int num_passes;
SELFTEST_BEGIN_STMT \
const char *desc = "ASSERT_NE (" #EXPECTED ", " #ACTUAL ")"; \
if ((EXPECTED) != (ACTUAL)) \
- ::selftest::pass (__FILE__, __LINE__, desc); \
+ ::selftest::pass (SELFTEST_LOCATION, desc); \
else \
- ::selftest::fail (__FILE__, __LINE__, desc); \
+ ::selftest::fail (SELFTEST_LOCATION, desc); \
SELFTEST_END_STMT
/* Evaluate EXPECTED and ACTUAL and compare them with strcmp, calling
@@ -136,7 +155,16 @@ extern int num_passes;
#define ASSERT_STREQ(EXPECTED, ACTUAL) \
SELFTEST_BEGIN_STMT \
- ::selftest::assert_streq (__FILE__, __LINE__, #EXPECTED, #ACTUAL, \
+ ::selftest::assert_streq (SELFTEST_LOCATION, #EXPECTED, #ACTUAL, \
+ (EXPECTED), (ACTUAL)); \
+ SELFTEST_END_STMT
+
+/* Like ASSERT_STREQ_AT, but treat LOC as the effective location of the
+ selftest. */
+
+#define ASSERT_STREQ_AT(LOC, EXPECTED, ACTUAL) \
+ SELFTEST_BEGIN_STMT \
+ ::selftest::assert_streq ((LOC), #EXPECTED, #ACTUAL, \
(EXPECTED), (ACTUAL)); \
SELFTEST_END_STMT
@@ -148,9 +176,9 @@ extern int num_passes;
const char *desc = "ASSERT_PRED1 (" #PRED1 ", " #VAL1 ")"; \
bool actual = (PRED1) (VAL1); \
if (actual) \
- ::selftest::pass (__FILE__, __LINE__, desc); \
+ ::selftest::pass (SELFTEST_LOCATION, desc); \
else \
- ::selftest::fail (__FILE__, __LINE__, desc); \
+ ::selftest::fail (SELFTEST_LOCATION, desc); \
SELFTEST_END_STMT
#define SELFTEST_BEGIN_STMT do {
--
1.8.5.3
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