msvcrt: Added fputwc tests.

dlls/msvcrt/tests/file.c

@@ -792,6 +792,63 @@ static void test_fgetwc( void )
   free(tempf);
 }
 
+static void test_fputwc(void)
+{
+    char temppath[MAX_PATH];
+    char tempfile[MAX_PATH];
+    FILE *f;
+    char buf[1024];
+    int ret;
+
+    GetTempPath (MAX_PATH, temppath);
+    GetTempFileName (temppath, "", 0, tempfile);
+
+    f = fopen(tempfile, "w");
+    ret = fputwc('a', f);
+    ok(ret == 'a', "fputwc returned %x, expected 'a'\n", ret);
+    ret = fputwc('\n', f);
+    ok(ret == '\n', "fputwc returned %x, expected '\\n'\n", ret);
+    fclose(f);
+
+    f = fopen(tempfile, "rb");
+    ret = fread(buf, 1, sizeof(buf), f);
+    ok(ret == 3, "fread returned %d, expected 3\n", ret);
+    ok(!memcmp(buf, "a\r\n", 3), "incorrect file data\n");
+    fclose(f);
+
+    if(p_fopen_s) {
+        f = fopen(tempfile, "w,ccs=unicode");
+        ret = fputwc('a', f);
+        ok(ret == 'a', "fputwc returned %x, expected 'a'\n", ret);
+        ret = fputwc('\n', f);
+        ok(ret == '\n', "fputwc returned %x, expected '\\n'\n", ret);
+        fclose(f);
+
+        f = fopen(tempfile, "rb");
+        ret = fread(buf, 1, sizeof(buf), f);
+        ok(ret == 8, "fread returned %d, expected 8\n", ret);
+        ok(!memcmp(buf, "\xff\xfe\x61\x00\r\x00\n\x00", 8), "incorrect file data\n");
+        fclose(f);
+
+        f = fopen(tempfile, "w,ccs=utf-8");
+        ret = fputwc('a', f);
+        ok(ret == 'a', "fputwc returned %x, expected 'a'\n", ret);
+        ret = fputwc('\n', f);
+        ok(ret == '\n', "fputwc returned %x, expected '\\n'\n", ret);
+        fclose(f);
+
+        f = fopen(tempfile, "rb");
+        ret = fread(buf, 1, sizeof(buf), f);
+        ok(ret == 6, "fread returned %d, expected 6\n", ret);
+        ok(!memcmp(buf, "\xef\xbb\xbf\x61\r\n", 6), "incorrect file data\n");
+        fclose(f);
+    }else {
+        win_skip("fputwc tests on unicode files\n");
+    }
+
+    _unlink(tempfile);
+}
+
 static void test_ctrlz( void )
 {
   char* tempf;
@@ -1955,6 +2012,7 @@ START_TEST(file)
     test_flsbuf();
     test_fflush();
     test_fgetwc();
+    test_fputwc();
     test_ctrlz();
     test_file_put_get();
     test_tmpnam();