Add test for ascent and descent of serif and mono fonts

fontchain_lint now has tests making sure that their ascent and
descent matches that of Roboto.

Also, this moves a test class that contains a similar test and and
other related tests from graphictests to coretests.

Bug: 19791102
Change-Id: I8b473dd2a5f97ae2e3d322a2cabc16f3d32489f6

core/tests/coretests/src/android/graphics/TypefaceTest.java

@@ -20,6 +20,7 @@ import android.graphics.Paint;
 import android.graphics.Typeface;
 import android.test.suitebuilder.annotation.MediumTest;
 import android.test.suitebuilder.annotation.SmallTest;
+
 import junit.framework.TestCase;
 
 

graphics/tests/graphicstests/src/android/graphics/GraphicsTests.java

@@ -23,7 +23,6 @@ public class GraphicsTests {
         TestSuite suite = new TestSuite(GraphicsTests.class.getName());
 
         suite.addTestSuite(BitmapTest.class);
-        suite.addTestSuite(TypefaceTest.class);
         return suite;
     }
 }

tools/fonts/fontchain_lint.py

@@ -558,9 +558,13 @@ def check_vertical_metrics():
     for record in _fallback_chain:
         if record.name in ['sans-serif', 'sans-serif-condensed']:
             font = open_font(record.font)
-            assert (font['head'].yMax == 2163 and font['head'].yMin == -555 and
-                    font['hhea'].ascent == 1900 and font['hhea'].descent == -500), (
-                   'Vertical metrics of %s do not match expected Roboto metrics.' % (record.font,))
+            assert font['head'].yMax == 2163 and font['head'].yMin == -555, (
+                'yMax and yMin of %s do not match expected values.' % (record.font,))
+
+        if record.name in ['sans-serif', 'sans-serif-condensed', 'serif', 'monospace']:
+            font = open_font(record.font)
+            assert font['hhea'].ascent == 1900 and font['hhea'].descent == -500, (
+                'ascent and descent of %s do not match expected values.' % (record.font,))
 
 
 def main():