1 files changed, 21 insertions, 0 deletions
diff --git a/tests/test_str_isdigit_s.c b/tests/test_str_isdigit_s.c
new file mode 100644
index 0000000..5dd729c
--- /dev/null
+++ b/tests/test_str_isdigit_s.c
@@ -0,0 +1,21 @@
+#include "spm.h"
+#include "framework.h"
+
+const char *testFmt = "case '%s': returned '%d', expected '%d'\n";
+struct TestCase testCase[] = {
+        {.caseValue.str = "1234", .truthValue.signed_int = 1},
+        {.caseValue.str = "1234000000000", .truthValue.signed_int = 1},
+        {.caseValue.str = "1234aa", .truthValue.signed_int = 0},
+        {.caseValue.str = "z1234a", .truthValue.signed_int = 0},
+        {.caseValue.str = "gabcde", .truthValue.signed_int = 0},
+};
+size_t numCases = sizeof(testCase) / sizeof(struct TestCase);
+
+int main(int argc, char *argv[]) {
+    for (size_t i = 0; i < numCases; i++) {
+        int result = isdigit_s(testCase[i].caseValue.str);
+        int truth = testCase[i].truthValue.signed_int;
+        myassert(result == truth, testFmt, testCase[i].caseValue.str, result, truth);
+    }
+    return 0;
+}
+\ No newline at end of file