From 0468a58a4b32a075ded69e2a7d0e9746e283cfbe Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Sun, 21 Dec 2008 02:28:55 +0000
Subject: [PATCH] don't show assert message boxes in debug build but throw an
 exception if an assert unexpectedly fails; do check that expected asserts are
 generated

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57459 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 tests/controls/listctrltest.cpp |  2 +-
 tests/test.cpp                  | 11 +++++++++++
 tests/testprec.h                | 21 +++++++++++++++++++++
 3 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/tests/controls/listctrltest.cpp b/tests/controls/listctrltest.cpp
index e6bb463986..8ad9e972a3 100644
--- a/tests/controls/listctrltest.cpp
+++ b/tests/controls/listctrltest.cpp
@@ -170,7 +170,7 @@ void ListCtrlTestCase::ItemRect()
     CPPUNIT_ASSERT( m_list->GetSubItemRect(0, 2, r) );
     CPPUNIT_ASSERT_EQUAL( 40, r.GetWidth() );
 
-    CPPUNIT_ASSERT( !m_list->GetSubItemRect(0, 3, r) );
+    WX_ASSERT_FAILS_WITH_ASSERT( m_list->GetSubItemRect(0, 3, r) );
 }
 
 #endif // wxHAS_LISTCTRL_COLUMN_ORDER
diff --git a/tests/test.cpp b/tests/test.cpp
index cc84f27925..9b1f65d065 100644
--- a/tests/test.cpp
+++ b/tests/test.cpp
@@ -92,6 +92,17 @@ public:
     virtual int  OnRun();
     virtual int  OnExit();
 
+#ifdef __WXDEBUG__
+    virtual void OnAssertFailure(const wxChar *,
+                                 int,
+                                 const wxChar *,
+                                 const wxChar *,
+                                 const wxChar *)
+    {
+        throw TestAssertFailure();
+    }
+#endif // __WXDEBUG__
+
 private:
     void List(Test *test, const string& parent = "") const;
 
diff --git a/tests/testprec.h b/tests/testprec.h
index b1799321f1..84edfc45eb 100644
--- a/tests/testprec.h
+++ b/tests/testprec.h
@@ -6,3 +6,24 @@
     (defined(__GNUC__) && (__GNUC__ >= 3))
     #define wxHAVE_U_ESCAPE
 #endif
+
+// thrown when assert fails in debug build
+class TestAssertFailure { };
+
+// macro to use for the functions which are supposed to fail an assertion
+#ifdef __WXDEBUG__
+    // some old cppunit versions don't define CPPUNIT_ASSERT_THROW so roll our
+    // own
+    #define WX_ASSERT_FAILS_WITH_ASSERT(cond) \
+        { \
+            bool throwsAssert = false; \
+            try { cond ; } \
+            catch ( const TestAssertFailure& ) { throwsAssert = true; } \
+            if ( !throwsAssert ) \
+                CPPUNIT_FAIL("expected assertion not generated"); \
+        }
+#else
+    // there are no assertions in non-debug build so just check that it fails
+    #define WX_ASSERT_FAILS_WITH_ASSERT(cond) CPPUNIT_ASSERT(!(cond))
+#endif
+