1 files changed, 43 insertions, 0 deletions
diff --git a/tests/src/com/android/inputmethod/latin/InputLogicTests.java b/tests/src/com/android/inputmethod/latin/InputLogicTests.java
index d27a7a903..fe92be618 100644
--- a/tests/src/com/android/inputmethod/latin/InputLogicTests.java
+++ b/tests/src/com/android/inputmethod/latin/InputLogicTests.java
@@ -17,6 +17,7 @@
 package com.android.inputmethod.latin;
 
 import android.test.suitebuilder.annotation.LargeTest;
+import android.view.inputmethod.BaseInputConnection;
 
 @LargeTest
 public class InputLogicTests extends InputTestsBase {
@@ -290,5 +291,47 @@ public class InputLogicTests extends InputTestsBase {
         }
         assertEquals("delete whole composing word", "", mEditText.getText().toString());
     }
+
+    public void testResumeSuggestionOnBackspace() {
+        final String WORD_TO_TYPE = "and this ";
+        type(WORD_TO_TYPE);
+        assertEquals("resume suggestion on backspace", -1,
+                BaseInputConnection.getComposingSpanStart(mEditText.getText()));
+        assertEquals("resume suggestion on backspace", -1,
+                BaseInputConnection.getComposingSpanEnd(mEditText.getText()));
+        type(Constants.CODE_DELETE);
+        assertEquals("resume suggestion on backspace", 4,
+                BaseInputConnection.getComposingSpanStart(mEditText.getText()));
+        assertEquals("resume suggestion on backspace", 8,
+                BaseInputConnection.getComposingSpanEnd(mEditText.getText()));
+    }
+
+    private void helperTestComposing(final String wordToType, final boolean shouldBeComposing) {
+        mEditText.setText("");
+        type(wordToType);
+        assertEquals("start composing inside text", shouldBeComposing ? 0 : -1,
+                BaseInputConnection.getComposingSpanStart(mEditText.getText()));
+        assertEquals("start composing inside text", shouldBeComposing ? wordToType.length() : -1,
+                BaseInputConnection.getComposingSpanEnd(mEditText.getText()));
+    }
+
+    public void testStartComposing() {
+        // Should start composing on a letter
+        helperTestComposing("a", true);
+        type("  "); // To reset the composing state
+        // Should not start composing on quote
+        helperTestComposing("'", false);
+        type("  ");
+        helperTestComposing("'-", false);
+        type("  ");
+        // Should not start composing on dash
+        helperTestComposing("-", false);
+        type("  ");
+        helperTestComposing("-'", false);
+        type("  ");
+        helperTestComposing("a-", true);
+        type("  ");
+        helperTestComposing("a'", true);
+    }
     // TODO: Add some tests for non-BMP characters
 }