unit-tests: add if_test
The macro TEST only allows defining a test that consists of a single
expression. Add a new macro, if_test, which provides a way to define
unit tests that are made up of one or more statements.
if_test allows defining self-contained tests en bloc, a bit like
test_expect_success does for regular tests. It acts like a conditional;
the test body is executed if test_skip_all() had not been called before.
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/helper/test-example-tap.c b/t/helper/test-example-tap.c
index 79c12b0..914af88 100644
--- a/t/helper/test-example-tap.c
+++ b/t/helper/test-example-tap.c
@@ -94,5 +94,38 @@ int cmd__example_tap(int argc, const char **argv)
test_res = TEST(t_empty(), "test with no checks");
TEST(check_int(test_res, ==, 0), "test with no checks returns 0");
+ if_test ("if_test passing test")
+ check_int(1, ==, 1);
+ if_test ("if_test failing test")
+ check_int(1, ==, 2);
+ if_test ("if_test passing TEST_TODO()")
+ TEST_TODO(check(0));
+ if_test ("if_test failing TEST_TODO()")
+ TEST_TODO(check(1));
+ if_test ("if_test test_skip()") {
+ check(0);
+ test_skip("missing prerequisite");
+ check(1);
+ }
+ if_test ("if_test test_skip() inside TEST_TODO()")
+ TEST_TODO((test_skip("missing prerequisite"), 1));
+ if_test ("if_test TEST_TODO() after failing check") {
+ check(0);
+ TEST_TODO(check(0));
+ }
+ if_test ("if_test failing check after TEST_TODO()") {
+ check(1);
+ TEST_TODO(check(0));
+ check(0);
+ }
+ if_test ("if_test messages from failing string and char comparison") {
+ check_str("\thello\\", "there\"\n");
+ check_str("NULL", NULL);
+ check_char('a', ==, '\n');
+ check_char('\\', ==, '\'');
+ }
+ if_test ("if_test test with no checks")
+ ; /* nothing */
+
return test_done();
}
diff --git a/t/t0080-unit-test-output.sh b/t/t0080-unit-test-output.sh
index fe221f3..3c369c8 100755
--- a/t/t0080-unit-test-output.sh
+++ b/t/t0080-unit-test-output.sh
@@ -50,7 +50,40 @@
# BUG: test has no checks at t/helper/test-example-tap.c:94
not ok 18 - test with no checks
ok 19 - test with no checks returns 0
- 1..19
+ ok 20 - if_test passing test
+ # check "1 == 2" failed at t/helper/test-example-tap.c:100
+ # left: 1
+ # right: 2
+ not ok 21 - if_test failing test
+ not ok 22 - if_test passing TEST_TODO() # TODO
+ # todo check 'check(1)' succeeded at t/helper/test-example-tap.c:104
+ not ok 23 - if_test failing TEST_TODO()
+ # check "0" failed at t/helper/test-example-tap.c:106
+ # skipping test - missing prerequisite
+ # skipping check '1' at t/helper/test-example-tap.c:108
+ ok 24 - if_test test_skip() # SKIP
+ # skipping test - missing prerequisite
+ ok 25 - if_test test_skip() inside TEST_TODO() # SKIP
+ # check "0" failed at t/helper/test-example-tap.c:113
+ not ok 26 - if_test TEST_TODO() after failing check
+ # check "0" failed at t/helper/test-example-tap.c:119
+ not ok 27 - if_test failing check after TEST_TODO()
+ # check "!strcmp("\thello\\\\", "there\"\n")" failed at t/helper/test-example-tap.c:122
+ # left: "\011hello\\\\"
+ # right: "there\"\012"
+ # check "!strcmp("NULL", NULL)" failed at t/helper/test-example-tap.c:123
+ # left: "NULL"
+ # right: NULL
+ # check "'a' == '\n'" failed at t/helper/test-example-tap.c:124
+ # left: 'a'
+ # right: '\012'
+ # check "'\\\\' == '\\''" failed at t/helper/test-example-tap.c:125
+ # left: '\\\\'
+ # right: '\\''
+ not ok 28 - if_test messages from failing string and char comparison
+ # BUG: test has no checks at t/helper/test-example-tap.c:127
+ not ok 29 - if_test test with no checks
+ 1..29
EOF
! test-tool example-tap >actual &&
diff --git a/t/unit-tests/test-lib.c b/t/unit-tests/test-lib.c
index 989dc75..fa1f959 100644
--- a/t/unit-tests/test-lib.c
+++ b/t/unit-tests/test-lib.c
@@ -16,6 +16,8 @@ static struct {
unsigned running :1;
unsigned skip_all :1;
unsigned todo :1;
+ char location[100];
+ char description[100];
} ctx = {
.lazy_plan = 1,
.result = RESULT_NONE,
@@ -125,6 +127,8 @@ void test_plan(int count)
int test_done(void)
{
+ if (ctx.running && ctx.location[0] && ctx.description[0])
+ test__run_end(1, ctx.location, "%s", ctx.description);
assert(!ctx.running);
if (ctx.lazy_plan)
@@ -167,13 +171,38 @@ void test_skip_all(const char *format, ...)
va_end(ap);
}
+void test__run_describe(const char *location, const char *format, ...)
+{
+ va_list ap;
+ int len;
+
+ assert(ctx.running);
+ assert(!ctx.location[0]);
+ assert(!ctx.description[0]);
+
+ xsnprintf(ctx.location, sizeof(ctx.location), "%s",
+ make_relative(location));
+
+ va_start(ap, format);
+ len = vsnprintf(ctx.description, sizeof(ctx.description), format, ap);
+ va_end(ap);
+ if (len < 0)
+ die("unable to format message: %s", format);
+ if (len >= sizeof(ctx.description))
+ BUG("ctx.description too small to format %s", format);
+}
+
int test__run_begin(void)
{
+ if (ctx.running && ctx.location[0] && ctx.description[0])
+ test__run_end(1, ctx.location, "%s", ctx.description);
assert(!ctx.running);
ctx.count++;
ctx.result = RESULT_NONE;
ctx.running = 1;
+ ctx.location[0] = '\0';
+ ctx.description[0] = '\0';
return ctx.skip_all;
}
diff --git a/t/unit-tests/test-lib.h b/t/unit-tests/test-lib.h
index 2de6d71..f15dceb 100644
--- a/t/unit-tests/test-lib.h
+++ b/t/unit-tests/test-lib.h
@@ -15,6 +15,23 @@
TEST_LOCATION(), __VA_ARGS__)
/*
+ * Run a test unless test_skip_all() has been called. Acts like a
+ * conditional; the test body is expected as a statement or block after
+ * the closing parenthesis. The description for each test should be
+ * unique. E.g.:
+ *
+ * if_test ("something else %d %d", arg1, arg2) {
+ * prepare();
+ * test_something_else(arg1, arg2);
+ * cleanup();
+ * }
+ */
+#define if_test(...) \
+ if (test__run_begin() ? \
+ (test__run_end(0, TEST_LOCATION(), __VA_ARGS__), 0) : \
+ (test__run_describe(TEST_LOCATION(), __VA_ARGS__), 1))
+
+/*
* Print a test plan, should be called before any tests. If the number
* of tests is not known in advance test_done() will automatically
* print a plan at the end of the test program.
@@ -153,6 +170,9 @@ union test__tmp {
extern union test__tmp test__tmp[2];
+__attribute__((format (printf, 2, 3)))
+void test__run_describe(const char *, const char *, ...);
+
int test__run_begin(void);
__attribute__((format (printf, 3, 4)))
int test__run_end(int, const char *, const char *, ...);
