tests: Added numerous tests.

The tests are taken almost verbatim from the open source project PicoC. It can
be found at https://code.google.com/p/picoc/.

The tests range from very simple/trivial ones to more complicated. My view is
that the more tests the better. Without tests like this I was very reluctant to
make any changes to tcc for the fear of breaking things.

The tests pass on Win32, OSX, Linux x86 and x86_64. One or two tests fail on
each platform due to differences in the runtime library.

1 files changed, 46 insertions, 0 deletions

diff --git a/tests2/28_strings.c b/tests2/28_strings.c
new file mode 100644
index 0000000..115fe09
--- /dev/null
+++ b/tests2/28_strings.c
@@ -0,0 +1,46 @@
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+
+int main()
+{
+   char a[10];
+
+   strcpy(a, "hello");
+   printf("%s\n", a);
+
+   strncpy(a, "gosh", 2);
+   printf("%s\n", a);
+
+   printf("%d\n", strcmp(a, "apple") > 0);
+   printf("%d\n", strcmp(a, "goere") > 0);
+   printf("%d\n", strcmp(a, "zebra") < 0);
+
+   printf("%d\n", strlen(a));
+
+   strcat(a, "!");
+   printf("%s\n", a);
+
+   printf("%d\n", strncmp(a, "apple", 2) > 0);
+   printf("%d\n", strncmp(a, "goere", 2) == 0);
+   printf("%d\n", strncmp(a, "goerg", 2) == 0);
+   printf("%d\n", strncmp(a, "zebra", 2) < 0);
+
+   printf("%s\n", index(a, 'o'));
+   printf("%s\n", rindex(a, 'l'));
+   printf("%d\n", rindex(a, 'x') == NULL);
+
+   memset(&a[1], 'r', 4);
+   printf("%s\n", a);
+
+   memcpy(&a[2], a, 2);
+   printf("%s\n", a);
+
+   printf("%d\n", memcmp(a, "apple", 4) > 0);
+   printf("%d\n", memcmp(a, "grgr", 4) == 0);
+   printf("%d\n", memcmp(a, "zebra", 4) < 0);
+
+   return 0;
+}
+
+/* vim: set expandtab ts=4 sw=3 sts=3 tw=80 :*/