1 files changed, 40 insertions, 0 deletions
diff --git a/tests/write_tests.c b/tests/write_tests.c
new file mode 100644
index 00000000..da5ee89c
--- /dev/null
+++ b/tests/write_tests.c
@@ -0,0 +1,40 @@
+#include <canutil/write.h>
+#include <check.h>
+#include <stdint.h>
+
+START_TEST (test_encode_can_signal)
+{
+    uint64_t value = encodeFloat(0, 1, 3, 1, 0);
+    ck_assert_int_eq(value, 0);
+}
+END_TEST
+
+START_TEST (test_encode_can_signal_rounding_precision)
+{
+    uint64_t value = encodeFloat(50, 2, 19, 0.001, 0);
+    ck_assert_int_eq(value, 0x061a800000000000LLU);
+}
+END_TEST
+
+Suite* canwriteSuite(void) {
+    Suite* s = suite_create("write");
+    TCase *tc_core = tcase_create("core");
+    tcase_add_checked_fixture(tc_core, NULL, NULL);
+    tcase_add_test(tc_core, test_encode_can_signal);
+    tcase_add_test(tc_core, test_encode_can_signal_rounding_precision);
+    suite_add_tcase(s, tc_core);
+
+    return s;
+}
+
+int main(void) {
+    int numberFailed;
+    Suite* s = canwriteSuite();
+    SRunner *sr = srunner_create(s);
+    // Don't fork so we can actually use gdb
+    srunner_set_fork_status(sr, CK_NOFORK);
+    srunner_run_all(sr, CK_NORMAL);
+    numberFailed = srunner_ntests_failed(sr);
+    srunner_free(sr);
+    return (numberFailed == 0) ? 0 : 1;
+}