Preserve original console methods (fixes #373)

Author: benvinegar

src/raven.js

@@ -26,11 +26,15 @@ var _Raven = window.Raven,
     authQueryString,
     isRavenInstalled = false,
     objectPrototype = Object.prototype,
-    // capture a reference to window.console first before
-    // the console plugin has a chance to monkey patch
+    // capture references to window.console *and* all its methods first
+    // before the console plugin has a chance to monkey patch
     originalConsole = window.console || {},
+    originalConsoleMethods = {},
     startTime = now();
 
+for (var method in originalConsole) {
+  originalConsoleMethods[method] = originalConsole[method];
+}
 /*
  * The core Raven singleton
  *
@@ -852,10 +856,10 @@ function uuid4() {
 }
 
 function logDebug(level) {
-    if (originalConsole[level] && Raven.debug) {
+    if (originalConsoleMethods[level] && Raven.debug) {
         // _slice is coming from vendor/TraceKit/tracekit.js
         // so it's accessible globally
-        originalConsole[level].apply(originalConsole, _slice.call(arguments, 1));
+        originalConsoleMethods[level].apply(originalConsole, _slice.call(arguments, 1));
     }
 }
 

test/raven.test.js

@@ -22,6 +22,11 @@ function flushRavenState() {
     startTime = 0;
     ravenNotConfiguredError = undefined;
     originalConsole = window.console || {};
+    originalConsoleMethods = {};
+
+    for (var method in originalConsole) {
+      originalConsoleMethods[method] = originalConsole[method];
+    }
 
     Raven.uninstall();
 }
@@ -326,23 +331,33 @@ describe('globals', function() {
 
         it('should not write to console when Raven.debug is false', function() {
             Raven.debug = false;
-            this.sinon.stub(originalConsole, level);
+            this.sinon.stub(originalConsoleMethods, level);
             logDebug(level, message);
-            assert.isFalse(originalConsole[level].called);
+            assert.isFalse(originalConsoleMethods[level].called);
         });
 
         it('should write to console when Raven.debug is true', function() {
             Raven.debug = true;
-            this.sinon.stub(originalConsole, level);
+            this.sinon.stub(originalConsoleMethods, level);
             logDebug(level, message);
-            assert.isTrue(originalConsole[level].calledOnce);
+            assert.isTrue(originalConsoleMethods[level].calledOnce);
         });
 
         it('should handle variadic arguments', function() {
             Raven.debug = true;
-            this.sinon.stub(originalConsole, level);
+            this.sinon.stub(originalConsoleMethods, level);
             logDebug(level, message, {}, 'foo');
         });
+
+        it('should be unaffected by monkeypatches to the console built-in', function() {
+            Raven.debug = true;
+            this.sinon.stub(console, level).throws("can't touch this");
+            this.sinon.stub(originalConsoleMethods, level);
+            logDebug(level, message);
+            assert.isTrue(originalConsoleMethods[level].calledOnce);
+            assert.isFalse(console[level].called);
+            console[level].restore();
+        });
     });
 
     describe('setAuthQueryString', function() {