strutil: add method to get an sr_rational from a string

[libsigrok.git] / tests / strutil.c

diff --git a/tests/strutil.c b/tests/strutil.c
index 2f4503da9679c6d0f3b8e0b73788018aac568451..ed7bb120b77dc7e3973dd87c0d21bac170b146ba 100644 (file)
--- a/tests/strutil.c
+++ b/tests/strutil.c
@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#include <config.h>
 #include <check.h>
 #include <libsigrok/libsigrok.h>
 #include "lib.h"
@@ -33,6 +34,18 @@ static void test_samplerate(uint64_t samplerate, const char *expected)
        g_free(s);
 }
 
+static void test_rational(const char *input, struct sr_rational expected)
+{
+       int ret;
+       struct sr_rational rational;
+
+       ret = sr_parse_rational(input, &rational);
+       fail_unless(ret == SR_OK);
+       fail_unless((expected.p == rational.p) && (expected.q == rational.q),
+                   "Invalid result for '%s': %ld/%ld'.",
+                   input, rational.p, rational.q);
+}
+
 /*
  * Check various inputs for sr_samplerate_string():
  *
@@ -154,6 +167,41 @@ START_TEST(test_ghz)
 }
 END_TEST
 
+START_TEST(test_integral)
+{
+       test_rational("1", (struct sr_rational){1, 1});
+       test_rational("2", (struct sr_rational){2, 1});
+       test_rational("10", (struct sr_rational){10, 1});
+       test_rational("-255", (struct sr_rational){-255, 1});
+}
+END_TEST
+
+START_TEST(test_fractional)
+{
+       test_rational("0.1", (struct sr_rational){1, 10});
+       test_rational("1.0", (struct sr_rational){10, 10});
+       test_rational("1.2", (struct sr_rational){12, 10});
+       test_rational("12.34", (struct sr_rational){1234, 100});
+       test_rational("-12.34", (struct sr_rational){-1234, 100});
+       test_rational("10.00", (struct sr_rational){1000, 100});
+}
+END_TEST
+
+START_TEST(test_exponent)
+{
+       test_rational("1e0", (struct sr_rational){1, 1});
+       test_rational("1E0", (struct sr_rational){1, 1});
+       test_rational("1E1", (struct sr_rational){10, 1});
+       test_rational("1e-1", (struct sr_rational){1, 10});
+       test_rational("-1.234e-0", (struct sr_rational){-1234, 1000});
+       test_rational("-1.234e3", (struct sr_rational){-1234, 1});
+       test_rational("-1.234e-3", (struct sr_rational){-1234, 1000000});
+       test_rational("0.001e3", (struct sr_rational){1, 1});
+       test_rational("0.001e0", (struct sr_rational){1, 1000});
+       test_rational("0.001e-3", (struct sr_rational){1, 1000000});
+}
+END_TEST
+
 Suite *suite_strutil(void)
 {
        Suite *s;
@@ -167,6 +215,9 @@ Suite *suite_strutil(void)
        tcase_add_test(tc, test_khz);
        tcase_add_test(tc, test_mhz);
        tcase_add_test(tc, test_ghz);
+       tcase_add_test(tc, test_integral);
+       tcase_add_test(tc, test_fractional);
+       tcase_add_test(tc, test_exponent);
        suite_add_tcase(s, tc);
 
        return s;