1 files changed, 87 insertions, 0 deletions
diff --git a/tests/core/errors.c b/tests/core/errors.c
new file mode 100644
index 000000000..512a4134d
--- /dev/null
+++ b/tests/core/errors.c
@@ -0,0 +1,87 @@
+#include "clar_libgit2.h"
+
+void test_core_errors__public_api(void)
+{
+	char *str_in_error;
+
+	giterr_clear();
+	cl_assert(giterr_last() == NULL);
+
+	giterr_set_oom();
+
+	cl_assert(giterr_last() != NULL);
+	cl_assert(giterr_last()->klass == GITERR_NOMEMORY);
+	str_in_error = strstr(giterr_last()->message, "memory");
+	cl_assert(str_in_error != NULL);
+
+	giterr_clear();
+
+	giterr_set_str(GITERR_REPOSITORY, "This is a test");
+
+	cl_assert(giterr_last() != NULL);
+	str_in_error = strstr(giterr_last()->message, "This is a test");
+	cl_assert(str_in_error != NULL);
+
+	giterr_clear();
+	cl_assert(giterr_last() == NULL);
+}
+
+#include "common.h"
+#include "util.h"
+#include "posix.h"
+
+void test_core_errors__new_school(void)
+{
+	char *str_in_error;
+
+	giterr_clear();
+	cl_assert(giterr_last() == NULL);
+
+	giterr_set_oom(); /* internal fn */
+
+	cl_assert(giterr_last() != NULL);
+	cl_assert(giterr_last()->klass == GITERR_NOMEMORY);
+	str_in_error = strstr(giterr_last()->message, "memory");
+	cl_assert(str_in_error != NULL);
+
+	giterr_clear();
+
+	giterr_set(GITERR_REPOSITORY, "This is a test"); /* internal fn */
+
+	cl_assert(giterr_last() != NULL);
+	str_in_error = strstr(giterr_last()->message, "This is a test");
+	cl_assert(str_in_error != NULL);
+
+	giterr_clear();
+	cl_assert(giterr_last() == NULL);
+
+	do {
+		struct stat st;
+		memset(&st, 0, sizeof(st));
+		cl_assert(p_lstat("this_file_does_not_exist", &st) < 0);
+		GIT_UNUSED(st);
+	} while (false);
+	giterr_set(GITERR_OS, "stat failed"); /* internal fn */
+
+	cl_assert(giterr_last() != NULL);
+	str_in_error = strstr(giterr_last()->message, "stat failed");
+	cl_assert(str_in_error != NULL);
+	cl_assert(git__prefixcmp(str_in_error, "stat failed: ") == 0);
+	cl_assert(strlen(str_in_error) > strlen("stat failed: "));
+
+#ifdef GIT_WIN32
+	giterr_clear();
+
+	/* The MSDN docs use this to generate a sample error */
+	cl_assert(GetProcessId(NULL) == 0);
+	giterr_set(GITERR_OS, "GetProcessId failed"); /* internal fn */
+
+	cl_assert(giterr_last() != NULL);
+	str_in_error = strstr(giterr_last()->message, "GetProcessId failed");
+	cl_assert(str_in_error != NULL);
+	cl_assert(git__prefixcmp(str_in_error, "GetProcessId failed: ") == 0);
+	cl_assert(strlen(str_in_error) > strlen("GetProcessId failed: "));
+#endif
+
+	giterr_clear();
+}