[Telemetry] Rename PngBitmap->Bitmap and move it to core.

tools/telemetry/telemetry/core/bitmap_unittest.py

Index: tools/telemetry/telemetry/core/bitmap_unittest.py
diff --git a/tools/telemetry/telemetry/core/bitmap_unittest.py b/tools/telemetry/telemetry/core/bitmap_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..45dd14fdcf4d18216ff5cca238b159dcb0bb144c
--- /dev/null
+++ b/tools/telemetry/telemetry/core/bitmap_unittest.py
@@ -0,0 +1,82 @@
+# Copyright 2013 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.
+
+import unittest
+import os
+
+from telemetry.core import bitmap
+from telemetry.core import util
+
+
+# This is a simple base64 encoded 2x2 PNG which contains, in order, a single
+# Red, Yellow, Blue, and Green pixel.
+test_png = """
+iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAAD91
+JpzAAAAAXNSR0IArs4c6QAAAAlwSFlzAAALEwAACx
+MBAJqcGAAAABZJREFUCNdj/M/AwPCfgYGB4T/DfwY
+AHAAD/iOWZXsAAAAASUVORK5CYII=
+"""
+
+
+test_png_path = os.path.join(util.GetUnittestDataDir(), 'test_png.png')
+test_png_2_path = os.path.join(util.GetUnittestDataDir(), 'test_png_2.png')
+
+
+class BitmapTest(unittest.TestCase):
+  def testReadFromBase64Png(self):
+    bmp = bitmap.Bitmap.FromBase64Png(test_png)
+
+    self.assertEquals(2, bmp.width)
+    self.assertEquals(2, bmp.height)
+
+    bmp.GetPixelColor(0, 0).AssertIsRGB(255, 0, 0)
+    bmp.GetPixelColor(1, 1).AssertIsRGB(0, 255, 0)
+    bmp.GetPixelColor(0, 1).AssertIsRGB(0, 0, 255)
+    bmp.GetPixelColor(1, 0).AssertIsRGB(255, 255, 0)
+
+  def testReadFromPnfFile(self):
+    file_bmp = bitmap.Bitmap.FromPngFile(test_png_path)
+
+    self.assertEquals(2, file_bmp.width)
+    self.assertEquals(2, file_bmp.height)
+
+    file_bmp.GetPixelColor(0, 0).AssertIsRGB(255, 0, 0)
+    file_bmp.GetPixelColor(1, 1).AssertIsRGB(0, 255, 0)
+    file_bmp.GetPixelColor(0, 1).AssertIsRGB(0, 0, 255)
+    file_bmp.GetPixelColor(1, 0).AssertIsRGB(255, 255, 0)
+
+  def testIsEqual(self):
+    bmp = bitmap.Bitmap.FromBase64Png(test_png)
+    file_bmp = bitmap.Bitmap.FromPngFile(test_png_path)
+    self.assertTrue(bmp.IsEqual(file_bmp))
+
+  def testDiff(self):
+    file_bmp = bitmap.Bitmap.FromPngFile(test_png_path)
+    file_bmp_2 = bitmap.Bitmap.FromPngFile(test_png_2_path)
+
+    diff_bmp = file_bmp.Diff(file_bmp)
+
+    self.assertEquals(2, diff_bmp.width)
+    self.assertEquals(2, diff_bmp.height)
+
+    diff_bmp.GetPixelColor(0, 0).AssertIsRGB(0, 0, 0)
+    diff_bmp.GetPixelColor(1, 1).AssertIsRGB(0, 0, 0)
+    diff_bmp.GetPixelColor(0, 1).AssertIsRGB(0, 0, 0)
+    diff_bmp.GetPixelColor(1, 0).AssertIsRGB(0, 0, 0)
+
+    diff_bmp = file_bmp.Diff(file_bmp_2)
+
+    self.assertEquals(3, diff_bmp.width)
+    self.assertEquals(3, diff_bmp.height)
+
+    diff_bmp.GetPixelColor(0, 0).AssertIsRGB(0, 255, 255)
+    diff_bmp.GetPixelColor(1, 1).AssertIsRGB(255, 0, 255)
+    diff_bmp.GetPixelColor(0, 1).AssertIsRGB(255, 255, 0)
+    diff_bmp.GetPixelColor(1, 0).AssertIsRGB(0, 0, 255)
+
+    diff_bmp.GetPixelColor(0, 2).AssertIsRGB(255, 255, 255)
+    diff_bmp.GetPixelColor(1, 2).AssertIsRGB(255, 255, 255)
+    diff_bmp.GetPixelColor(2, 0).AssertIsRGB(255, 255, 255)
+    diff_bmp.GetPixelColor(2, 1).AssertIsRGB(255, 255, 255)
+    diff_bmp.GetPixelColor(2, 2).AssertIsRGB(255, 255, 255)