| /*=============================================================================# |
| # Copyright (c) 2015, 2021 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.ecommons.text.core.input; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import org.eclipse.jface.text.Document; |
| import org.eclipse.jface.text.IDocument; |
| |
| import org.junit.Before; |
| import org.junit.FixMethodOrder; |
| import org.junit.Test; |
| import org.junit.internal.ArrayComparisonFailure; |
| |
| import org.eclipse.statet.jcommons.text.core.input.TextParserInput; |
| |
| |
| @FixMethodOrder |
| public class DocumentParserInputTest { |
| |
| |
| private IDocument doc; |
| private DocumentParserInput input; |
| |
| |
| @Before |
| public void setUp() { |
| this.doc= new Document(); |
| } |
| |
| |
| @Test |
| public void init() { |
| final String s= Utils.COUNTER_STRING.substring(0, 800); |
| this.doc.set(s); |
| this.input= new DocumentParserInput(this.doc); |
| this.input.init(); |
| |
| assertEquals(0, this.input.getStartIndex()); |
| assertEquals(s.length(), this.input.getStopIndex()); |
| } |
| |
| @Test |
| public void initRegion() { |
| final String s= Utils.COUNTER_STRING.substring(0, 800); |
| this.doc.set(s); |
| this.input= new DocumentParserInput(this.doc); |
| this.input.init(100, 200); |
| |
| assertEquals(100, this.input.getStartIndex()); |
| assertEquals(200, this.input.getStopIndex()); |
| } |
| |
| @Test (expected= IndexOutOfBoundsException.class) |
| public void initRegionIllegalStart() { |
| final String s= Utils.COUNTER_STRING.substring(0, 800); |
| this.doc.set(s); |
| this.input= new DocumentParserInput(this.doc); |
| this.input.init(-1, 400); |
| } |
| |
| @Test (expected= IndexOutOfBoundsException.class) |
| public void initRegionIllegalStop() { |
| final String s= Utils.COUNTER_STRING.substring(0, 800); |
| this.doc.set(s); |
| this.input= new DocumentParserInput(this.doc); |
| this.input.init(0, 801); |
| } |
| |
| @Test (expected= IllegalArgumentException.class) |
| public void initRegionIllegalLength() { |
| final String s= Utils.COUNTER_STRING.substring(0, 800); |
| this.doc.set(s); |
| this.input= new DocumentParserInput(this.doc); |
| this.input.init(800, 400); |
| } |
| |
| @Test |
| public void read() { |
| final String s= Utils.COUNTER_STRING.substring(0, 800); |
| this.doc.set(s); |
| this.input= new DocumentParserInput(this.doc); |
| this.input.init(); |
| |
| assertChars(s); |
| |
| assertEquals(TextParserInput.EOF, this.input.get(s.length())); |
| |
| assertEquals(s.length(), Utils.getBufferLength(this.input)); |
| } |
| |
| @Test |
| public void readRegion() { |
| final String s= Utils.COUNTER_STRING.substring(0, 800); |
| this.doc.set(s); |
| this.input= new DocumentParserInput(this.doc); |
| this.input.init(100, 200); |
| |
| assertChars(s, 100, 200); |
| |
| assertEquals(TextParserInput.EOF, this.input.get(200)); |
| |
| assertEquals(s.length(), Utils.getBufferLength(this.input)); |
| } |
| |
| @Test |
| public void updateBuffer() { |
| final String s= Utils.COUNTER_STRING; |
| this.input= new DocumentParserInput(); |
| this.input.reset(this.doc); |
| this.doc.set(s); |
| this.input.init(); |
| |
| readConsume(s, 0, s.length(), 100); |
| |
| assertEquals(TextParserInput.EOF, this.input.get(0)); |
| |
| assertEquals(Utils.DEFAULT_BUFFER_SIZE, Utils.getBufferLength(this.input)); |
| } |
| |
| @Test |
| public void increaseBuffer() { |
| final String s= Utils.COUNTER_STRING; |
| this.input= new DocumentParserInput(); |
| this.input.reset(this.doc); |
| this.doc.set(s); |
| this.input.init(); |
| |
| assertChars(s); |
| |
| assertEquals(TextParserInput.EOF, this.input.get(s.length())); |
| } |
| |
| @Test |
| public void combined() { |
| final String s= Utils.COUNTER_STRING; |
| this.input= new DocumentParserInput(); |
| this.input.reset(this.doc); |
| this.doc.set(s); |
| this.input.init(); |
| |
| readConsume(s, 0, s.length(), 2351); |
| |
| assertEquals(TextParserInput.EOF, this.input.get(0)); |
| |
| assertTrue(0x1000 >= Utils.getBufferLength(this.input)); |
| } |
| |
| @Test |
| public void empty() { |
| final String s= ""; |
| this.input= new DocumentParserInput(); |
| this.input.reset(this.doc); |
| this.doc.set(s); |
| this.input.init(); |
| |
| assertEquals(TextParserInput.EOF, this.input.get(0)); |
| |
| assertTrue(0x1000 >= Utils.getBufferLength(this.input)); |
| } |
| |
| |
| protected void readConsume(final String expected, int begin, final int end, final int consume) { |
| while (begin < end) { |
| final int l= Math.min(end - begin, consume); |
| assertEquals(begin, this.input.getIndex()); |
| assertEquals(0, this.input.getLengthInSource(0)); |
| assertChars(expected, begin, begin + l); |
| assertEquals(l, this.input.getLengthInSource(l)); |
| this.input.consume(l); |
| begin+= l; |
| } |
| } |
| |
| protected void assertChars(final String expected) { |
| assertChars(expected, 0, expected.length()); |
| } |
| |
| protected void assertChars(final String expected, final int begin, final int end) { |
| for (int n= 0, index= begin; index < end; n++, index++) { |
| final char eChar= expected.charAt(index); |
| final int actual= this.input.get(n); |
| try { |
| assertEquals(eChar, actual); |
| } |
| catch (final AssertionError e) { |
| throw new ArrayComparisonFailure("char ", e, index); |
| } |
| } |
| } |
| |
| } |