docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/src/org/eclipse/statet/internal/docmlet/wikitext/commonmark/core/inlines/InlineParserTest.java

/*=============================================================================#
 # Copyright (c) 2015, 2018 David Green 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.
 # 
 # SPDX-License-Identifier: EPL-2.0
 # 
 # Contributors:
 #     David Green - org.eclipse.mylyn.docs: initial API and implementation
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.internal.docmlet.wikitext.commonmark.core.inlines;

import static org.junit.Assert.assertEquals;

import java.util.Arrays;
import java.util.List;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

import org.eclipse.statet.jcommons.collections.ImCollections;

import org.eclipse.statet.internal.docmlet.wikitext.commonmark.core.CommonmarkAsserts;
import org.eclipse.statet.internal.docmlet.wikitext.commonmark.core.Line;
import org.eclipse.statet.internal.docmlet.wikitext.commonmark.core.LineSequence;
import org.eclipse.statet.internal.docmlet.wikitext.commonmark.core.TextSegment;


public class InlineParserTest {
	
	@Rule
	public final ExpectedException thrown= ExpectedException.none();
	
	
	private final Line line= new Line(0, 1, 0, "test", "\n");
	
	
	public InlineParserTest() {
	}
	
	
	@Test
	public void requiresSpans() {
		this.thrown.expect(NullPointerException.class);
		new InlineParser(null);
	}
	
	@Test
	public void parse() {
		assertParse("");
		assertParse("one\ntwo",
				new Characters(this.line, 0, 3, 3, "one"),
				new SoftLineBreak(this.line, 3, 1, 1),
				new Characters(this.line, 4, 3, 3, "two") );
		assertParse("one\ntwo three",
				new Characters(this.line, 0, 3, 3, "one"),
				new SoftLineBreak(this.line, 3, 1, 1),
				new Characters(this.line, 4, 9, 9, "two three") );
	}
	
	@Test
	public void toStringContent() {
		final InlineParser parser= new InlineParser(ImCollections.newList(
				new CodeSpan(), new AllCharactersSpan() ));
		final String stringContent= parser.toStringContent(CommonmarkAsserts.newContext(),
				new TextSegment(ImCollections.newList(new Line(1, 0, 0, "one `two` three", "\n"))));
		assertEquals("one two three", stringContent);
	}
	
	private void assertParse(final String content, final Inline... inlines) {
		final List<Inline> expected= Arrays.asList(inlines);
		final List<Inline> actual= createInlines().parse(CommonmarkAsserts.newContext(),
				new TextSegment(LineSequence.create(content)), true );
		for (int x= 0; x < expected.size() && x < actual.size(); ++x) {
			assertEquivalent(x, expected.get(x), actual.get(x));
		}
		assertEquals(expected, actual);
	}
	
	private void assertEquivalent(final int index, final Inline expected, final Inline actual) {
		final String message= "inline at " + index;
		assertEquals(message + " type", expected.getClass(), actual.getClass());
		assertEquals(message + " startOffset", expected.getStartOffset(), actual.getStartOffset());
		assertEquals(message + " length", expected.getLength(), actual.getLength());
		assertEquals(message, expected, actual);
	}
	
	private InlineParser createInlines() {
		return new InlineParser(ImCollections.newList(
				new LineBreakSpan(), new StringCharactersSpan(), new AllCharactersSpan() ));
	}
	
}