ICU-7282 The problem reported by ticket#7282 is only reproduced in ICU4J. Just adding the equivalent test case to ICU4C.

X-SVN-Rev: 28112

icu4c/source/test/intltest/numfmtst.cpp

@@ -108,6 +108,7 @@ void NumberFormatTest::runIndexedTest( int32_t index, UBool exec, const char* &n
         CASE(45,TestFormatAttributes);
         CASE(46,TestFieldPositionIterator);
         CASE(47,TestDecimal);
+        CASE(48,TestCurrencyFractionDigits);
         default: name = ""; break;
     }
 }
@@ -6116,4 +6117,26 @@ void NumberFormatTest::TestDecimal() {
 
 }
 
+void NumberFormatTest::TestCurrencyFractionDigits() {
+    UErrorCode status = U_ZERO_ERROR;
+    UnicodeString text1, text2;
+    double value = 99.12345;
+
+    // Create currenct instance
+    NumberFormat* fmt = NumberFormat::createCurrencyInstance("ja_JP", status);
+    ASSERT_SUCCESS(status);
+    fmt->format(value, text1);
+
+    // Reset the same currency and format the test value again
+    fmt->setCurrency(fmt->getCurrency(), status);
+    ASSERT_SUCCESS(status);
+    fmt->format(value, text2);
+
+    if (text1 != text2) {
+        errln((UnicodeString)"NumberFormat::format() should return the same result - text1="
+            + text1 + " text2=" + text2);
+    }
+    delete fmt;
+}
+
 #endif /* #if !UCONFIG_NO_FORMATTING */

icu4c/source/test/intltest/numfmtst.h

@@ -146,6 +146,7 @@ class NumberFormatTest: public CalendarTimeZoneTest {
     void TestFieldPositionIterator();
 
     void TestDecimal();
+    void TestCurrencyFractionDigits();
 
  private: