add test for distinct values

2 files changed, 21 insertions, 1 deletions

diff --git a/test.c b/test.c
index 2750ec3..51ce05f 100644
--- a/test.c
+++ b/test.c
@@ -41,7 +41,7 @@ static void print_result(int success, const char *format, ...)
 	vprintf(format, ap);
 	va_end(ap);
 
-	printf("%c", success ? '\r' : '\n');
+	printf("%c", success ? '\n' : '\n');
 	set_output_color(DEFAULT);
 }
 
@@ -97,3 +97,17 @@ void test_string_imp(const char *expression, const char *totest, const char *toc
 	}
 	print_result(success, "%s == \"%s\"", expression, tocompare);
 }
+
+void test_distinct_imp(const char *arrayname, int *array, size_t nelements)
+{
+	int success = 1;
+	size_t i, j;
+	for (i = 0; i < nelements; i++) {
+		for (j = i + 1; j < nelements; j++) {
+			if (array[i] == array[j]) {
+				success = 0;
+			}
+		}
+	}
+	print_result(success, "Elements in %s are%s distinct", arrayname, success ? "" : " not");
+}
diff --git a/test.h b/test.h
index 4f763b8..38b50ae 100644
--- a/test.h
+++ b/test.h
@@ -1,3 +1,5 @@
+#include <stddef.h>
+
 void testing_header(const char *);
 void testing_comment(const char*);
 void testing_end(void);
@@ -15,6 +17,10 @@ void test_bool_imp(const char *, int, int);
 void test_string_imp(const char*, const char*, const char*);
 #define test_string(expression, string) test_string_imp(#expression, expression, string)
 
+void test_distinct_imp(const char*, int *, size_t);
+#define test_distinct(array) test_distinct_imp(#array, array, sizeof(array) / sizeof(array[0]))
+
 void test_assert(void);
 void test_ctype(void);
 void test_locale(void);
+void test_errno(void);