Transform animations should not collapse by default when interpolating

cc/test/geometry_test_utils.cc

Index: cc/test/geometry_test_utils.cc
diff --git a/cc/test/geometry_test_utils.cc b/cc/test/geometry_test_utils.cc
index 9bf5811ec9c9044412ab205f5214f2796ffec0e4..df61c53410228ec537e0738f4c0d76045f4cae3d 100644
--- a/cc/test/geometry_test_utils.cc
+++ b/cc/test/geometry_test_utils.cc
@@ -16,22 +16,23 @@ namespace cc {
 
 void ExpectTransformationMatrixEq(const gfx::Transform& expected,
                                   const gfx::Transform& actual) {
-  EXPECT_FLOAT_EQ((expected).matrix().get(0, 0), (actual).matrix().get(0, 0));
-  EXPECT_FLOAT_EQ((expected).matrix().get(1, 0), (actual).matrix().get(1, 0));
-  EXPECT_FLOAT_EQ((expected).matrix().get(2, 0), (actual).matrix().get(2, 0));
-  EXPECT_FLOAT_EQ((expected).matrix().get(3, 0), (actual).matrix().get(3, 0));
-  EXPECT_FLOAT_EQ((expected).matrix().get(0, 1), (actual).matrix().get(0, 1));
-  EXPECT_FLOAT_EQ((expected).matrix().get(1, 1), (actual).matrix().get(1, 1));
-  EXPECT_FLOAT_EQ((expected).matrix().get(2, 1), (actual).matrix().get(2, 1));
-  EXPECT_FLOAT_EQ((expected).matrix().get(3, 1), (actual).matrix().get(3, 1));
-  EXPECT_FLOAT_EQ((expected).matrix().get(0, 2), (actual).matrix().get(0, 2));
-  EXPECT_FLOAT_EQ((expected).matrix().get(1, 2), (actual).matrix().get(1, 2));
-  EXPECT_FLOAT_EQ((expected).matrix().get(2, 2), (actual).matrix().get(2, 2));
-  EXPECT_FLOAT_EQ((expected).matrix().get(3, 2), (actual).matrix().get(3, 2));
-  EXPECT_FLOAT_EQ((expected).matrix().get(0, 3), (actual).matrix().get(0, 3));
-  EXPECT_FLOAT_EQ((expected).matrix().get(1, 3), (actual).matrix().get(1, 3));
-  EXPECT_FLOAT_EQ((expected).matrix().get(2, 3), (actual).matrix().get(2, 3));
-  EXPECT_FLOAT_EQ((expected).matrix().get(3, 3), (actual).matrix().get(3, 3));

[ajuma, 2017/07/04 14:50:56]

Thanks for cleaning this up!

+  for (int row = 0; row < 4; ++row) {
+    for (int col = 0; col < 4; ++col) {
+      EXPECT_FLOAT_EQ(expected.matrix().get(row, col),
+                      actual.matrix().get(row, col));
+    }
+  }
+}
+
+void ExpectTransformationMatrixNear(const gfx::Transform& expected,
+                                    const gfx::Transform& actual,
+                                    float abs_error) {
+  for (int row = 0; row < 4; ++row) {
+    for (int col = 0; col < 4; ++col) {
+      EXPECT_NEAR(expected.matrix().get(row, col),
+                  actual.matrix().get(row, col), abs_error);
+    }
+  }
 }
 
 gfx::Transform Inverse(const gfx::Transform& transform) {