Add trivial unit-tests for WTF assertion macros.

third_party/WebKit/Source/wtf/AssertionsTest.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "wtf/Assertions.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "wtf/text/StringBuilder.h"
 #include <stdio.h>
 
-#if !LOG_DISABLED
 namespace WTF {
 
+TEST(AssertionsTest, Assertions) {
+  ASSERT(true);
+#if ENABLE(ASSERT)
+  EXPECT_DEATH_IF_SUPPORTED(ASSERT(false), "");
+  EXPECT_DEATH_IF_SUPPORTED(ASSERT_NOT_REACHED(), "");
+#endif
+
+  RELEASE_ASSERT(true);
+  EXPECT_DEATH_IF_SUPPORTED(RELEASE_ASSERT(false), "");
+
+  SECURITY_DCHECK(true);
+#if ENABLE(SECURITY_ASSERT)
+  EXPECT_DEATH_IF_SUPPORTED(SECURITY_DCHECK(false), "");
+#endif
+
+  SECURITY_CHECK(true);
+  EXPECT_DEATH_IF_SUPPORTED(SECURITY_CHECK(false), "");
+
+  EXPECT_DEATH_IF_SUPPORTED(CRASH(), "");
+  EXPECT_DEATH_IF_SUPPORTED(IMMEDIATE_CRASH(), "");
+};
+
+#if !LOG_DISABLED
 static const int kPrinterBufferSize = 256;
 static char gBuffer[kPrinterBufferSize];
 static StringBuilder gBuilder;
 
 static void vprint(const char* format, va_list args) {
   int written = vsnprintf(gBuffer, kPrinterBufferSize, format, args);
   if (written > 0 && written < kPrinterBufferSize)
     gBuilder.append(gBuffer);
 }
 
@@ skipping 14 matching lines @@
 
   EXPECT_EQ(
       "( a1\n"
       "  ( c\n"
       "    ( d -1 hello )\n"
       "  )\n"
       "  a2 0.5\n"
       ")\n",
       gBuilder.toString());
 };
+#endif  // !LOG_DISABLED
 
 }  // namespace WTF
-#endif  // !LOG_DISABLED