src/remembering-c.c: Add tests for mkdir_p()

1 files changed, 49 insertions, 3 deletions

diff --git a/src/remembering-c.c b/src/remembering-c.c
index f120441..494fffc 100644
--- a/src/remembering-c.c
+++ b/src/remembering-c.c
@@ -13,6 +13,7 @@
 #ifdef TEST
 #include "unit-test.h"
 #include <stdbool.h>
+#include <errno.h>
 #endif
 
 
@@ -240,7 +241,6 @@ static int mkdir_p(const char *const path, mode_t mode) {
 	int ret;
 
 	if (stat(path, &s) == 0 && S_ISDIR(s.st_mode)) {
-		printf("ISDIR: %s\n", path);
 		return 0;
 	}
 
@@ -260,9 +260,55 @@ static int mkdir_p(const char *const path, mode_t mode) {
 	return mkdir(path, mode);
 }
 
-int main(int argc, char *argv[]) {
 #ifdef TEST
+static void test_mkdir_p() {
+	{
+		testing("mkdir_p() with an existing directory is a noop");
+		struct stat s;
+		assert(stat("/tmp", &s) == 0 && S_ISDIR(s.st_mode));
+		assert(mkdir_p("/tmp", S_IRWXU | S_IRWXG | S_IRWXO) == 0);
+		assert(stat("/tmp", &s) == 0 && S_ISDIR(s.st_mode));
+		test_ok();
+	}
+	{
+		testing("mkdir_p() with a new directory creates it");
+		struct stat s;
+		const char *const SUBDIRECTORY_SUFFIX = "/a/b/c/d/e";
+		char template[] = "/tmp/remembering.XXXXXX";
+		const char *const prefix = mkdtemp(template);
+		assert(prefix);
+
+		assert(stat(prefix, &s) == 0 && S_ISDIR(s.st_mode));
+
+		const size_t subdirectory_size =
+			strlen(prefix)              +
+			strlen(SUBDIRECTORY_SUFFIX) +
+			sizeof(char);
+		char *const subdirectory = malloc(subdirectory_size);
+		assert(subdirectory);
+		strcat(subdirectory, prefix);
+		strcat(subdirectory, SUBDIRECTORY_SUFFIX);
+
+		assert(stat(subdirectory, &s) == -1 && errno == ENOENT);
+		assert(mkdir_p(subdirectory, S_IRWXU | S_IRWXG | S_IRWXO) == 0);
+		assert(stat(subdirectory, &s) == 0 && S_ISDIR(s.st_mode));
+
+		free(subdirectory);
+		test_ok();
+	}
+}
+#endif
+
+#ifdef TEST
+static void unit_tests() {
 	test_get_profile_file();
+	test_mkdir_p();
+}
+#endif
+
+int main(int argc, char *argv[]) {
+#ifdef TEST
+	unit_tests();
 	return EXIT_SUCCESS;
 #endif
 
@@ -315,7 +361,7 @@ int main(int argc, char *argv[]) {
 		return EXIT_USAGE;
 	}
 
-	// end getopts
+	/* End getopt() */
 
 
 	int ret = EXIT_SUCCESS;