Fix InputConnection.deleteSurroundingText()

third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp

Index: third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp b/third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp
index f84d2306a5ca8b951b5284d55508c9b0675a44fb..6ecf84cdbb3fd2b51c44746f4b5805067f3dee8a 100644
--- a/third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp
+++ b/third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp
@@ -190,4 +190,85 @@ TEST_F(InputMethodControllerTest, ConfirmPasswordComposition)
     EXPECT_STREQ("foo", input->value().utf8().data());
 }
 
+TEST_F(InputMethodControllerTest, DeleteSurroundingTextWithEmptyText)
+{
+    HTMLInputElement* input = toHTMLInputElement(
+        insertHTMLElement("<input id='sample'>", "sample"));
+
+    input->setValue("");
+    EXPECT_STREQ("", input->value().utf8().data());
+    controller().deleteSurroundingText(0, 0);
+    EXPECT_STREQ("", input->value().utf8().data());
+
+    input->setValue("");
+    EXPECT_STREQ("", input->value().utf8().data());
+    controller().deleteSurroundingText(1, 0);
+    EXPECT_STREQ("", input->value().utf8().data());
+
+    input->setValue("");
+    EXPECT_STREQ("", input->value().utf8().data());
+    controller().deleteSurroundingText(0, 1);
+    EXPECT_STREQ("", input->value().utf8().data());
+}
+
+TEST_F(InputMethodControllerTest, DeleteSurroundingTextWithRangeSelection)
+{
+    HTMLInputElement* input = toHTMLInputElement(
+        insertHTMLElement("<input id='sample'>", "sample"));
+
+    input->setValue("hello");
+    EXPECT_STREQ("hello", input->value().utf8().data());
+    controller().setEditableSelectionOffsets(PlainTextRange(1, 4));
+    controller().deleteSurroundingText(0, 0);
+    EXPECT_STREQ("hello", input->value().utf8().data());
+
+    input->setValue("hello");
+    EXPECT_STREQ("hello", input->value().utf8().data());
+    controller().setEditableSelectionOffsets(PlainTextRange(1, 4));
+    controller().deleteSurroundingText(1, 1);
+    EXPECT_STREQ("ell", input->value().utf8().data());
+
+    input->setValue("hello");
+    EXPECT_STREQ("hello", input->value().utf8().data());
+    controller().setEditableSelectionOffsets(PlainTextRange(1, 4));
+    controller().deleteSurroundingText(100, 0);
+    EXPECT_STREQ("ello", input->value().utf8().data());
+
+    input->setValue("hello");
+    EXPECT_STREQ("hello", input->value().utf8().data());
+    controller().setEditableSelectionOffsets(PlainTextRange(1, 4));
+    controller().deleteSurroundingText(0, 100);
+    EXPECT_STREQ("hell", input->value().utf8().data());
+}
+
+TEST_F(InputMethodControllerTest, DeleteSurroundingTextWithCursorSelection)
+{
+    HTMLInputElement* input = toHTMLInputElement(
+        insertHTMLElement("<input id='sample'>", "sample"));
+
+    input->setValue("hello");
+    EXPECT_STREQ("hello", input->value().utf8().data());
+    controller().setEditableSelectionOffsets(PlainTextRange(2, 2));
+    controller().deleteSurroundingText(0, 0);
+    EXPECT_STREQ("hello", input->value().utf8().data());
+
+    input->setValue("hello");
+    EXPECT_STREQ("hello", input->value().utf8().data());
+    controller().setEditableSelectionOffsets(PlainTextRange(2, 2));
+    controller().deleteSurroundingText(1, 1);
+    EXPECT_STREQ("hlo", input->value().utf8().data());
+
+    input->setValue("hello");
+    EXPECT_STREQ("hello", input->value().utf8().data());
+    controller().setEditableSelectionOffsets(PlainTextRange(2, 2));
+    controller().deleteSurroundingText(100, 0);
+    EXPECT_STREQ("llo", input->value().utf8().data());
+
+    input->setValue("hello");
+    EXPECT_STREQ("hello", input->value().utf8().data());
+    controller().setEditableSelectionOffsets(PlainTextRange(2, 2));
+    controller().deleteSurroundingText(0, 100);
+    EXPECT_STREQ("he", input->value().utf8().data());
+}
+
 } // namespace blink