1 files changed, 36 insertions, 0 deletions
diff --git a/libutf8_is_invalid.c b/libutf8_is_invalid.c
new file mode 100644
index 0000000..fe0938b
--- /dev/null
+++ b/libutf8_is_invalid.c
@@ -0,0 +1,36 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+extern inline int libutf8_is_invalid(uint_least32_t codepoint);
+
+
+#else
+
+
+int
+main(void)
+{
+	unsigned long int i = 0u;
+	uint_least32_t cp;
+
+	SET_UP_TEST();
+
+	for (; i <= 0x10FFFFul; i++) {
+		cp = (uint_least32_t)i;
+		if (libutf8_is_noncharacter(cp))
+			assert(libutf8_is_invalid(cp) == 1);
+		else if (libutf8_is_surrogate(cp))
+			assert(libutf8_is_invalid(cp) == 1);
+		else
+			assert(libutf8_is_invalid(cp) == 0);
+	}
+	for (; i < 0x120000ul; i++)
+		assert(libutf8_is_invalid((uint_least32_t)i) == 1);
+
+	return 0;
+}
+
+
+#endif