views: support vertical-drag-to-end on textfields

ui/views/controls/textfield/textfield_model_unittest.cc

Index: ui/views/controls/textfield/textfield_model_unittest.cc
diff --git a/ui/views/controls/textfield/textfield_model_unittest.cc b/ui/views/controls/textfield/textfield_model_unittest.cc
index 4908c2bec10ccb02810050ee6ced2c9f5bb0f5af..8a1c3753abd293a2f5cc2741a6a4ac1c6b0f7462 100644
--- a/ui/views/controls/textfield/textfield_model_unittest.cc
+++ b/ui/views/controls/textfield/textfield_model_unittest.cc
@@ -597,6 +597,24 @@ TEST_F(TextfieldModelTest, SelectWordTest) {
   SelectWordTestVerifier(model, base::ASCIIToUTF16(" "), 24U);
 }
 
+TEST_F(TextfieldModelTest, SelectToStartTest) {
+  TextfieldModel model(nullptr);
+  model.Append(base::ASCIIToUTF16("Hello, World!"));
+  MoveCursorTo(model, 5);
+  model.MoveCursorToStart(true);
+  EXPECT_EQ(model.GetSelectedText(), base::ASCIIToUTF16("Hello"));
+  EXPECT_EQ(model.GetCursorPosition(), 0U);
+}
+
+TEST_F(TextfieldModelTest, SelectToEndTest) {
+  TextfieldModel model(nullptr);
+  model.Append(base::ASCIIToUTF16("Hello, World!"));
+  MoveCursorTo(model, 7);
+  model.MoveCursorToEnd(true);
+  EXPECT_EQ(model.GetSelectedText(), base::ASCIIToUTF16("World!"));
+  EXPECT_EQ(model.GetCursorPosition(), 13U);
+}
+
 // TODO(xji): temporarily disable in platform Win since the complex script
 // characters and Chinese characters are turned into empty square due to font
 // regression.