Added some Image tests

test/image.test.js

@@ -0,0 +1,56 @@
+
+/**
+ * Module dependencies.
+ */
+
+var Canvas = require('canvas')
+  , Image = Canvas.Image;
+
+var png = __dirname + '/fixtures/clock.png';
+
+module.exports = {
+  'tset Image': function(assert){
+    assert.ok(Image instanceof Function);
+  },
+
+  'test Image#onload': function(assert, beforeExit){
+    var img = new Image
+      , n = 0;
+
+    assert.strictEqual(false, img.complete);
+    img.onload = function(){
+      assert.strictEqual(true, img.complete);
+      ++n;
+    };
+    
+    img.src = png;
+    assert.equal(img.src, png);
+
+    beforeExit(function(){
+      assert.equal(1, n);
+    });
+  },
+  
+  'test Image#onerror': function(assert, beforeExit){
+    var img = new Image
+      , n = 0;
+
+    assert.strictEqual(false, img.complete);
+    img.onload = function(){
+      assert.fail('called onload');
+    };
+    
+    img.onerror = function(err){
+      assert.strictEqual(false, img.complete);
+      assert.ok(err instanceof Error, 'did not invoke onerror() with error');
+      ++n;
+    };
+    
+    img.src = png + 's';
+    assert.equal(img.src, png + 's');
+
+    beforeExit(function(){
+      assert.equal(1, n);
+    });
+  }
+};