Implemented my_dirname and added unit tests for it.

1 files changed, 65 insertions, 0 deletions

diff --git a/tests/internals/test_internals.c b/tests/internals/test_internals.c
new file mode 100644
index 0000000..b388ddb
--- /dev/null
+++ b/tests/internals/test_internals.c
@@ -0,0 +1,65 @@
+
+#include "misc.h"
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int failures = 0;
+
+#define TEST_ASSERT(expr) do { if (!(expr)) { printf("Assertion failed: `%s'\n", #expr); failures++; } } while (0);
+
+void test_my_dirname(char *arg, const char *expected)
+{
+    char *orig = strdup(arg);
+    
+    const char *ret = my_dirname(arg);
+    if (strcmp(ret, expected) != 0) {
+        printf("Expected my_dirname(`%s') to return `%s' but got `%s'\n", orig, expected, ret);
+        failures++;
+    }
+    
+    free(orig);
+}
+
+void my_dirname_suite()
+{
+    char buf[256];
+    
+    strcpy(buf, "/foo/bar/baz");
+    test_my_dirname(buf, "/foo/bar");
+    
+    strcpy(buf, "/foo/bar");
+    test_my_dirname(buf, "/foo");
+    
+    strcpy(buf, "/foo");
+    test_my_dirname(buf, "/");
+    
+    strcpy(buf, "/foo/");
+    test_my_dirname(buf, "/foo");
+    
+    strcpy(buf, "/");
+    test_my_dirname(buf, "/");
+    
+    strcpy(buf, "foo");
+    test_my_dirname(buf, ".");
+    
+    strcpy(buf, "foo/bar");
+    test_my_dirname(buf, "foo");
+    
+    strcpy(buf, "./foo/bar");
+    test_my_dirname(buf, "./foo");
+    
+    strcpy(buf, "./foo");
+    test_my_dirname(buf, ".");
+    
+    strcpy(buf, ".");
+    test_my_dirname(buf, "..");
+}
+
+int main()
+{
+    my_dirname_suite();
+
+    return (failures > 0) ? 1 : 0;
+}
+