From b9243a05226634974bcec2c221c05fcaf92301e3 Mon Sep 17 00:00:00 2001
From: Travis Keep <keep94@gmail.com>
Date: Tue, 12 Feb 2013 19:47:49 +0000
Subject: [PATCH] ICU-9919 Add test to ensure that
 DateIntervalInfo.setIntervalPattern has no unwanted side effects.

X-SVN-Rev: 33194
---
 icu4c/source/test/intltest/dtifmtts.cpp | 20 +++++++++++++++++++-
 icu4c/source/test/intltest/dtifmtts.h   |  8 +++++++-
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/icu4c/source/test/intltest/dtifmtts.cpp b/icu4c/source/test/intltest/dtifmtts.cpp
index 26d848470f1..a1a7f4e14e0 100644
--- a/icu4c/source/test/intltest/dtifmtts.cpp
+++ b/icu4c/source/test/intltest/dtifmtts.cpp
@@ -45,7 +45,8 @@ void DateIntervalFormatTest::runIndexedTest( int32_t index, UBool exec, const ch
         TESTCASE(0, testAPI);
         TESTCASE(1, testFormat);
         TESTCASE(2, testFormatUserDII);
-        TESTCASE(3, testStress);
+        TESTCASE(3, testSetIntervalPatternNoSideEffect);
+        TESTCASE(4, testStress);
         default: name = ""; break;
     }
 }
@@ -1102,6 +1103,23 @@ void DateIntervalFormatTest::testFormatUserDII() {
 }
 
 
+void DateIntervalFormatTest::testSetIntervalPatternNoSideEffect() {
+    UErrorCode ec = U_ZERO_ERROR;
+    DateIntervalInfo* dtitvinf = new DateIntervalInfo(ec);
+    UnicodeString expected;
+    dtitvinf->getIntervalPattern(ctou("yMd"), UCAL_DATE, expected, ec);
+    dtitvinf->setIntervalPattern(ctou("yMd"), UCAL_DATE, ctou("M/d/y \\u2013 d"), ec);
+    delete dtitvinf;
+    dtitvinf = new DateIntervalInfo(ec);
+    UnicodeString actual;
+    dtitvinf->getIntervalPattern(ctou("yMd"), UCAL_DATE, actual, ec);
+    delete dtitvinf;
+    if (expected != actual) {
+        errln("DateIntervalInfo.setIntervalPattern should have no side effects.");
+    }
+}
+
+
 void DateIntervalFormatTest::expectUserDII(const char** data, 
                                            int32_t data_length) {
     int32_t i = 0;
diff --git a/icu4c/source/test/intltest/dtifmtts.h b/icu4c/source/test/intltest/dtifmtts.h
index 847de1c918b..3f62b09eb1c 100644
--- a/icu4c/source/test/intltest/dtifmtts.h
+++ b/icu4c/source/test/intltest/dtifmtts.h
@@ -1,6 +1,6 @@
 /********************************************************************
  * COPYRIGHT: 
- * Copyright (c) 2008, International Business Machines Corporation and
+ * Copyright (c) 2008-2013 International Business Machines Corporation and
  * others. All Rights Reserved.
  ********************************************************************/
 
@@ -36,6 +36,12 @@ public:
      */
     void testFormatUserDII();
 
+    /**
+     * Test for no unwanted side effects when setting
+     * interval patterns.
+     */
+    void testSetIntervalPatternNoSideEffect();
+
     /**
      * Stress test -- stress test formatting on 40 locales
      */