1 files changed, 68 insertions, 0 deletions
diff --git a/test/checker.cc b/test/checker.cc
new file mode 100644
index 0000000..2b5bc8a
--- /dev/null
+++ b/test/checker.cc
@@ -0,0 +1,68 @@
+// Copyright (c) 2020 Johannes Stoelp
+
+#include "test_helper.h"
+
+#include <cstdio>
+#include <fmt.h>
+
+void check_dec() {
+    char have[16];
+    int len = dynld_snprintf(have, sizeof(have), "%d %d", 12345, -54321);
+
+    ASSERT_EQ("12345 -54321", have);
+    ASSERT_EQ(12, len);
+    ASSERT_EQ('\0', have[len]);
+}
+
+void check_hex() {
+    char have[16];
+    int len = dynld_snprintf(have, sizeof(have), "%x %x", 0xdeadbeef, 0xcafe);
+
+    ASSERT_EQ("deadbeef cafe", have);
+    ASSERT_EQ(13, len);
+    ASSERT_EQ('\0', have[len]);
+}
+
+void check_ptr() {
+    char have[16];
+    int len = dynld_snprintf(have, sizeof(have), "%p %p", (void*)0xabcd, (void*)0x0);
+
+    ASSERT_EQ("0xabcd 0x0", have);
+    ASSERT_EQ(10, len);
+    ASSERT_EQ('\0', have[len]);
+}
+
+void check_null() {
+    int len = dynld_snprintf(0, 0, "%s", "abcd1234efgh5678");
+
+    ASSERT_EQ(16, len);
+}
+
+void check_exact_len() {
+    char have[8];
+    int len = dynld_snprintf(have, sizeof(have), "%s", "12345678");
+
+    ASSERT_EQ("1234567", have);
+    ASSERT_EQ(8, len);
+    ASSERT_EQ('\0', have[7]);
+}
+
+void check_exceed_len() {
+    char have[8];
+    int len = dynld_snprintf(have, sizeof(have), "%s", "123456789abcedf");
+
+    ASSERT_EQ("1234567", have);
+    ASSERT_EQ(15, len);
+    ASSERT_EQ('\0', have[7]);
+}
+
+int main() {
+    TEST_INIT;
+    TEST(check_dec);
+    TEST(check_hex);
+    TEST(check_ptr);
+    TEST(check_null);
+    TEST(check_exact_len);
+    TEST(check_exceed_len);
+    return TEST_FAIL_CNT;
+}