1 files changed, 222 insertions, 0 deletions
diff --git a/tests/src/org/kelar/inputmethod/compat/LocaleSpanCompatUtilsTests.java b/tests/src/org/kelar/inputmethod/compat/LocaleSpanCompatUtilsTests.java
new file mode 100644
index 000000000..44aae0282
--- /dev/null
+++ b/tests/src/org/kelar/inputmethod/compat/LocaleSpanCompatUtilsTests.java
@@ -0,0 +1,222 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.kelar.inputmethod.compat;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import android.graphics.Typeface;
+import android.os.Build;
+import android.text.SpannableString;
+import android.text.Spanned;
+import android.text.style.StyleSpan;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.Locale;
+
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class LocaleSpanCompatUtilsTests {
+    @Test
+    public void testInstantiatable() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            // LocaleSpan isn't yet available.
+            return;
+        }
+        assertTrue(LocaleSpanCompatUtils.isLocaleSpanAvailable());
+        final Object japaneseLocaleSpan = LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE);
+        assertNotNull(japaneseLocaleSpan);
+        assertEquals(Locale.JAPANESE,
+                LocaleSpanCompatUtils.getLocaleFromLocaleSpan(japaneseLocaleSpan));
+    }
+
+    private static void assertLocaleSpan(final Spanned spanned, final int index,
+            final int expectedStart, final int expectedEnd,
+            final Locale expectedLocale, final int expectedSpanFlags) {
+        final Object span = spanned.getSpans(0, spanned.length(), Object.class)[index];
+        assertEquals(expectedLocale, LocaleSpanCompatUtils.getLocaleFromLocaleSpan(span));
+        assertEquals(expectedStart, spanned.getSpanStart(span));
+        assertEquals(expectedEnd, spanned.getSpanEnd(span));
+        assertEquals(expectedSpanFlags, spanned.getSpanFlags(span));
+    }
+
+    private static void assertSpanEquals(final Object expectedSpan, final Spanned spanned,
+            final int index) {
+        final Object[] spans = spanned.getSpans(0, spanned.length(), Object.class);
+        assertEquals(expectedSpan, spans[index]);
+    }
+
+    private static void assertSpanCount(final int expectedCount, final Spanned spanned) {
+        final Object[] spans = spanned.getSpans(0, spanned.length(), Object.class);
+        assertEquals(expectedCount, spans.length);
+    }
+
+    @Test
+    public void testUpdateLocaleSpan() {
+        if (!LocaleSpanCompatUtils.isLocaleSpanAvailable()) {
+            return;
+        }
+
+        // Test if the simplest case works.
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 1, 5, Locale.JAPANESE);
+            assertSpanCount(1, text);
+            assertLocaleSpan(text, 0, 1, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        // Test if only LocaleSpans are updated.
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            final StyleSpan styleSpan = new StyleSpan(Typeface.BOLD);
+            text.setSpan(styleSpan, 0, 7, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 1, 5, Locale.JAPANESE);
+            assertSpanCount(2, text);
+            assertSpanEquals(styleSpan, text, 0);
+            assertLocaleSpan(text, 1, 1, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        // Test if two jointed spans are merged into one span.
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 3,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 3, 5, Locale.JAPANESE);
+            assertSpanCount(1, text);
+            assertLocaleSpan(text, 0, 1, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        // Test if two overlapped spans are merged into one span.
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 4,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 3, 5, Locale.JAPANESE);
+            assertSpanCount(1, text);
+            assertLocaleSpan(text, 0, 1, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        // Test if three overlapped spans are merged into one span.
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 4,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 5, 6,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 2, 8, Locale.JAPANESE);
+            assertSpanCount(1, text);
+            assertLocaleSpan(text, 0, 1, 8, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        // Test if disjoint spans remain disjoint.
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 3,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 5, 6,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 8, 9, Locale.JAPANESE);
+            assertSpanCount(3, text);
+            assertLocaleSpan(text, 0, 1, 3, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            assertLocaleSpan(text, 1, 5, 6, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            assertLocaleSpan(text, 2, 8, 9, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        // Test if existing span flags are preserved during merge.
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 5,
+                    Spanned.SPAN_INCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 3, 4, Locale.JAPANESE);
+            assertSpanCount(1, text);
+            assertLocaleSpan(text, 0, 1, 5, Locale.JAPANESE,
+                    Spanned.SPAN_INCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
+        }
+
+        // Test if existing span flags are preserved even when partially overlapped (leading edge).
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 5,
+                    Spanned.SPAN_INCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 3, 7, Locale.JAPANESE);
+            assertSpanCount(1, text);
+            assertLocaleSpan(text, 0, 1, 7, Locale.JAPANESE,
+                    Spanned.SPAN_INCLUSIVE_EXCLUSIVE | Spanned.SPAN_INTERMEDIATE);
+        }
+
+        // Test if existing span flags are preserved even when partially overlapped (trailing edge).
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 3, 7,
+                    Spanned.SPAN_INCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 1, 5, Locale.JAPANESE);
+            assertSpanCount(1, text);
+            assertLocaleSpan(text, 0, 1, 7, Locale.JAPANESE,
+                    Spanned.SPAN_EXCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
+        }
+
+        // Test if existing locale span will be removed when the locale doesn't match.
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.ENGLISH), 3, 5,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 1, 7, Locale.JAPANESE);
+            assertSpanCount(1, text);
+            assertLocaleSpan(text, 0, 1, 7, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        // Test if existing locale span will be removed when the locale doesn't match. (case 2)
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.ENGLISH), 3, 7,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 5, 6, Locale.JAPANESE);
+            assertSpanCount(3, text);
+            assertLocaleSpan(text, 0, 3, 5, Locale.ENGLISH, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            assertLocaleSpan(text, 1, 6, 7, Locale.ENGLISH, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            assertLocaleSpan(text, 2, 5, 6, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        // Test if existing locale span will be removed when the locale doesn't match. (case 3)
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.ENGLISH), 3, 7,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 2, 5, Locale.JAPANESE);
+            assertSpanCount(2, text);
+            assertLocaleSpan(text, 0, 5, 7, Locale.ENGLISH, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            assertLocaleSpan(text, 1, 2, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        // Test if existing locale span will be removed when the locale doesn't match. (case 3)
+        {
+            final SpannableString text = new SpannableString("0123456789");
+            text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.ENGLISH), 3, 7,
+                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            LocaleSpanCompatUtils.updateLocaleSpan(text, 5, 8, Locale.JAPANESE);
+            assertSpanCount(2, text);
+            assertLocaleSpan(text, 0, 3, 5, Locale.ENGLISH, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            assertLocaleSpan(text, 1, 5, 8, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+    }
+}