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Diffstat (limited to 'tests/src/org/kelar/inputmethod/latin/utils/SpannableStringUtilsTests.java')
| -rw-r--r-- | tests/src/org/kelar/inputmethod/latin/utils/SpannableStringUtilsTests.java | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/tests/src/org/kelar/inputmethod/latin/utils/SpannableStringUtilsTests.java b/tests/src/org/kelar/inputmethod/latin/utils/SpannableStringUtilsTests.java new file mode 100644 index 000000000..f5546a04d --- /dev/null +++ b/tests/src/org/kelar/inputmethod/latin/utils/SpannableStringUtilsTests.java @@ -0,0 +1,244 @@ +/* + * Copyright (C) 2013 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.latin.utils; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertTrue; + +import android.content.Context; +import android.text.SpannableString; +import android.text.SpannableStringBuilder; +import android.text.Spanned; +import android.text.SpannedString; +import android.text.style.SuggestionSpan; +import android.text.style.URLSpan; + +import androidx.test.InstrumentationRegistry; +import androidx.test.filters.SmallTest; +import androidx.test.runner.AndroidJUnit4; + +import org.junit.Test; +import org.junit.runner.RunWith; + +@SmallTest +@RunWith(AndroidJUnit4.class) +public class SpannableStringUtilsTests { + + private Context getContext() { + return InstrumentationRegistry.getTargetContext(); + } + + @Test + public void testConcatWithSuggestionSpansOnly() { + SpannableStringBuilder s = new SpannableStringBuilder("test string\ntest string\n" + + "test string\ntest string\ntest string\ntest string\ntest string\ntest string\n" + + "test string\ntest string\n"); + final int N = 10; + for (int i = 0; i < N; ++i) { + // Put a PARAGRAPH-flagged span that should not be found in the result. + s.setSpan(new SuggestionSpan(getContext(), + new String[] {"" + i}, Spanned.SPAN_PARAGRAPH), + i * 12, i * 12 + 12, Spanned.SPAN_PARAGRAPH); + // Put a normal suggestion span that should be found in the result. + s.setSpan(new SuggestionSpan(getContext(), new String[] {"" + i}, 0), i, i * 2, 0); + // Put a URL span than should not be found in the result. + s.setSpan(new URLSpan("http://a"), i, i * 2, 0); + } + + final CharSequence a = s.subSequence(0, 15); + final CharSequence b = s.subSequence(15, s.length()); + final Spanned result = + (Spanned)SpannableStringUtils.concatWithNonParagraphSuggestionSpansOnly(a, b); + + Object[] spans = result.getSpans(0, result.length(), SuggestionSpan.class); + for (int i = 0; i < spans.length; i++) { + final int flags = result.getSpanFlags(spans[i]); + assertEquals("Should not find a span with PARAGRAPH flag", + flags & Spanned.SPAN_PARAGRAPH, 0); + assertTrue("Should be a SuggestionSpan", spans[i] instanceof SuggestionSpan); + } + } + + private static void assertSpanCount(final int expectedCount, final CharSequence cs) { + final int actualCount; + if (cs instanceof Spanned) { + final Spanned spanned = (Spanned) cs; + actualCount = spanned.getSpans(0, spanned.length(), Object.class).length; + } else { + actualCount = 0; + } + assertEquals(expectedCount, actualCount); + } + + private static void assertSpan(final CharSequence cs, final Object expectedSpan, + final int expectedStart, final int expectedEnd, final int expectedFlags) { + assertTrue(cs instanceof Spanned); + final Spanned spanned = (Spanned) cs; + final Object[] actualSpans = spanned.getSpans(0, spanned.length(), Object.class); + for (Object actualSpan : actualSpans) { + if (actualSpan == expectedSpan) { + final int actualStart = spanned.getSpanStart(actualSpan); + final int actualEnd = spanned.getSpanEnd(actualSpan); + final int actualFlags = spanned.getSpanFlags(actualSpan); + assertEquals(expectedStart, actualStart); + assertEquals(expectedEnd, actualEnd); + assertEquals(expectedFlags, actualFlags); + return; + } + } + assertTrue(false); + } + + @Test + public void testSplitCharSequenceWithSpan() { + // text: " a bcd efg hij " + // span1: ^^^^^^^ + // span2: ^^^^^ + // span3: ^ + final SpannableString spannableString = new SpannableString(" a bcd efg hij "); + final Object span1 = new Object(); + final Object span2 = new Object(); + final Object span3 = new Object(); + final int SPAN1_FLAGS = Spanned.SPAN_EXCLUSIVE_EXCLUSIVE; + final int SPAN2_FLAGS = Spanned.SPAN_EXCLUSIVE_INCLUSIVE; + final int SPAN3_FLAGS = Spanned.SPAN_INCLUSIVE_INCLUSIVE; + spannableString.setSpan(span1, 0, 7, SPAN1_FLAGS); + spannableString.setSpan(span2, 0, 5, SPAN2_FLAGS); + spannableString.setSpan(span3, 12, 13, SPAN3_FLAGS); + final CharSequence[] charSequencesFromSpanned = SpannableStringUtils.split( + spannableString, " ", true /* preserveTrailingEmptySegmengs */); + final CharSequence[] charSequencesFromString = SpannableStringUtils.split( + spannableString.toString(), " ", true /* preserveTrailingEmptySegmengs */); + + + assertEquals(7, charSequencesFromString.length); + assertEquals(7, charSequencesFromSpanned.length); + + // text: "" + // span1: ^ + // span2: ^ + // span3: + assertEquals("", charSequencesFromString[0].toString()); + assertSpanCount(0, charSequencesFromString[0]); + assertEquals("", charSequencesFromSpanned[0].toString()); + assertSpanCount(2, charSequencesFromSpanned[0]); + assertSpan(charSequencesFromSpanned[0], span1, 0, 0, SPAN1_FLAGS); + assertSpan(charSequencesFromSpanned[0], span2, 0, 0, SPAN2_FLAGS); + + // text: "a" + // span1: ^ + // span2: ^ + // span3: + assertEquals("a", charSequencesFromString[1].toString()); + assertSpanCount(0, charSequencesFromString[1]); + assertEquals("a", charSequencesFromSpanned[1].toString()); + assertSpanCount(2, charSequencesFromSpanned[1]); + assertSpan(charSequencesFromSpanned[1], span1, 0, 1, SPAN1_FLAGS); + assertSpan(charSequencesFromSpanned[1], span2, 0, 1, SPAN2_FLAGS); + + // text: "bcd" + // span1: ^^^ + // span2: ^^ + // span3: + assertEquals("bcd", charSequencesFromString[2].toString()); + assertSpanCount(0, charSequencesFromString[2]); + assertEquals("bcd", charSequencesFromSpanned[2].toString()); + assertSpanCount(2, charSequencesFromSpanned[2]); + assertSpan(charSequencesFromSpanned[2], span1, 0, 3, SPAN1_FLAGS); + assertSpan(charSequencesFromSpanned[2], span2, 0, 2, SPAN2_FLAGS); + + // text: "efg" + // span1: + // span2: + // span3: + assertEquals("efg", charSequencesFromString[3].toString()); + assertSpanCount(0, charSequencesFromString[3]); + assertEquals("efg", charSequencesFromSpanned[3].toString()); + assertSpanCount(0, charSequencesFromSpanned[3]); + + // text: "hij" + // span1: + // span2: + // span3: ^ + assertEquals("hij", charSequencesFromString[4].toString()); + assertSpanCount(0, charSequencesFromString[4]); + assertEquals("hij", charSequencesFromSpanned[4].toString()); + assertSpanCount(1, charSequencesFromSpanned[4]); + assertSpan(charSequencesFromSpanned[4], span3, 1, 2, SPAN3_FLAGS); + + // text: "" + // span1: + // span2: + // span3: + assertEquals("", charSequencesFromString[5].toString()); + assertSpanCount(0, charSequencesFromString[5]); + assertEquals("", charSequencesFromSpanned[5].toString()); + assertSpanCount(0, charSequencesFromSpanned[5]); + + // text: "" + // span1: + // span2: + // span3: + assertEquals("", charSequencesFromString[6].toString()); + assertSpanCount(0, charSequencesFromString[6]); + assertEquals("", charSequencesFromSpanned[6].toString()); + assertSpanCount(0, charSequencesFromSpanned[6]); + } + + @Test + public void testSplitCharSequencePreserveTrailingEmptySegmengs() { + assertEquals(1, SpannableStringUtils.split("", " ", + false /* preserveTrailingEmptySegmengs */).length); + assertEquals(1, SpannableStringUtils.split(new SpannedString(""), " ", + false /* preserveTrailingEmptySegmengs */).length); + + assertEquals(1, SpannableStringUtils.split("", " ", + true /* preserveTrailingEmptySegmengs */).length); + assertEquals(1, SpannableStringUtils.split(new SpannedString(""), " ", + true /* preserveTrailingEmptySegmengs */).length); + + assertEquals(0, SpannableStringUtils.split(" ", " ", + false /* preserveTrailingEmptySegmengs */).length); + assertEquals(0, SpannableStringUtils.split(new SpannedString(" "), " ", + false /* preserveTrailingEmptySegmengs */).length); + + assertEquals(2, SpannableStringUtils.split(" ", " ", + true /* preserveTrailingEmptySegmengs */).length); + assertEquals(2, SpannableStringUtils.split(new SpannedString(" "), " ", + true /* preserveTrailingEmptySegmengs */).length); + + assertEquals(3, SpannableStringUtils.split("a b c ", " ", + false /* preserveTrailingEmptySegmengs */).length); + assertEquals(3, SpannableStringUtils.split(new SpannedString("a b c "), " ", + false /* preserveTrailingEmptySegmengs */).length); + + assertEquals(5, SpannableStringUtils.split("a b c ", " ", + true /* preserveTrailingEmptySegmengs */).length); + assertEquals(5, SpannableStringUtils.split(new SpannedString("a b c "), " ", + true /* preserveTrailingEmptySegmengs */).length); + + assertEquals(6, SpannableStringUtils.split("a b ", " ", + false /* preserveTrailingEmptySegmengs */).length); + assertEquals(6, SpannableStringUtils.split(new SpannedString("a b "), " ", + false /* preserveTrailingEmptySegmengs */).length); + + assertEquals(7, SpannableStringUtils.split("a b ", " ", + true /* preserveTrailingEmptySegmengs */).length); + assertEquals(7, SpannableStringUtils.split(new SpannedString("a b "), " ", + true /* preserveTrailingEmptySegmengs */).length); + } +} |