Check in the pristine copy of ICU 4.6...

icu46/source/test/cintltst/cctest.c

+/********************************************************************
+ * COPYRIGHT: 
+ * Copyright (c) 1997-2010, International Business Machines Corporation and
+ * others. All Rights Reserved.
+ ********************************************************************/
+
+#include "unicode/ucnv.h"
+#include "unicode/ucnv_err.h"
+
+#include "cintltst.h"
+#include "ustr_cnv.h"
+#include <string.h>
+void TestDefaultConverterError(void); /* keep gcc happy */
+void TestDefaultConverterSet(void); /* keep gcc happy */
+
+
+/* This makes sure that a converter isn't leaked when an error is passed to 
+    u_getDefaultConverter */
+void TestDefaultConverterError(void) {
+    UErrorCode          err                 =   U_ZERO_ERROR;
+
+    /* Remove the default converter */
+    ucnv_close(u_getDefaultConverter(&err));
+
+    if (U_FAILURE(err)) {
+        log_err("Didn't expect a failure yet %s\n", myErrorName(err));
+        return;
+    }
+
+    /* Set to any radom error state */
+    err = U_FILE_ACCESS_ERROR;
+    if (u_getDefaultConverter(&err) != NULL) {
+        log_err("Didn't expect to get a converter on a failure\n");
+    }
+}
+
+/* Get the default converter. Copy its name. Put it back. */
+static void copyDefaultConverterName(char *out, UErrorCode *status) {
+    UConverter *defConv;
+    const char *itsName;
+    out[0]=0;
+    if(U_FAILURE(*status)) return;
+    defConv = u_getDefaultConverter(status);
+    /* get its name */
+    itsName = ucnv_getName(defConv, status);
+    if(U_FAILURE(*status)) return;
+    strcpy(out, itsName); 
+    /* put it back. */
+    u_releaseDefaultConverter(defConv); 
+}
+
+/* 
+  Changing the default name may not affect the actual name from u_getDefaultConverter
+   ( for example, if UTF-8 is the fixed converter ).
+  But, if it does cause a change, that change should be reflected when the converter is
+  set back.
+*/
+void TestDefaultConverterSet(void) {
+    UErrorCode status = U_ZERO_ERROR;
+    static char defaultName[UCNV_MAX_CONVERTER_NAME_LENGTH + 1];
+    static char nameBeforeSet[UCNV_MAX_CONVERTER_NAME_LENGTH + 1];
+    static char nameAfterSet[UCNV_MAX_CONVERTER_NAME_LENGTH + 1];
+    static char nameAfterRestore[UCNV_MAX_CONVERTER_NAME_LENGTH + 1];
+    static const char SET_TO[]="iso-8859-3";
+    strcpy(defaultName, ucnv_getDefaultName());
+
+    log_verbose("getDefaultName returned %s\n", defaultName);
+
+   /* first, flush any extant converter */
+   u_flushDefaultConverter();
+   copyDefaultConverterName(nameBeforeSet, &status);
+   log_verbose("name from u_getDefaultConverter() = %s\n", nameBeforeSet);
+   u_flushDefaultConverter();
+   ucnv_setDefaultName(SET_TO);
+   copyDefaultConverterName(nameAfterSet, &status);
+   log_verbose("name from u_getDefaultConverter() after set to %s (%s) = %s\n", SET_TO, ucnv_getDefaultName(), nameAfterSet);
+   ucnv_setDefaultName(defaultName);
+   copyDefaultConverterName(nameAfterRestore, &status);
+   log_verbose("name from u_getDefaultConverter() after restore = %s\n", nameAfterRestore);
+   u_flushDefaultConverter();
+
+   if(U_FAILURE(status)) {
+      log_err("Error in test: %s\n", u_errorName(status));
+   } else {
+      if(!strcmp(nameBeforeSet, nameAfterSet)) { /* changing the default didn't affect. */
+          log_info("Skipping test: ucnv_setDefaultName() did not affect actual name of %s\n", nameBeforeSet);
+      } else {
+          if(strcmp(nameBeforeSet, nameAfterRestore)) {
+               log_err("Error: u_getDefaultConverter() is still returning %s (expected %s) even though default converter was set back to %s (was %s)\n", nameAfterRestore, nameBeforeSet, defaultName , SET_TO);
+          } else {
+              log_verbose("Test passed. \n");
+          }
+      }
+   }
+}
+
+