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Es6InlineTypesNotYetParsedTest.java
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Es6InlineTypesNotYetParsedTest.java
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/*
* Copyright 2015 The Closure Compiler Authors.
*
* 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 com.google.javascript.jscomp;
import static com.google.common.truth.Truth.THROW_ASSERTION_ERROR;
import static com.google.common.truth.Truth.assertThat;
import static java.util.Arrays.asList;
import com.google.common.truth.FailureStrategy;
import com.google.common.truth.Subject;
import com.google.javascript.jscomp.CompilerOptions.LanguageMode;
import com.google.javascript.jscomp.testing.TestErrorManager;
import com.google.javascript.rhino.Node;
/**
* This test is temporary. It asserts that the CodeGenerator produces the
* right ES6_TYPED sources, even though those sources don't yet parse.
* All these test cases should be migrated to a round-trip test as the parser
* catches up.
*
* @author alexeagle@google.com (Alex Eagle)
*/
public final class Es6InlineTypesNotYetParsedTest extends CompilerTestCase {
private Compiler compiler;
@Override
public void setUp() {
setAcceptedLanguage(LanguageMode.ECMASCRIPT6);
compiler = createCompiler();
}
@Override
protected CompilerOptions getOptions() {
CompilerOptions options = super.getOptions();
options.setLanguageOut(LanguageMode.ECMASCRIPT6_TYPED);
return options;
}
@Override
public CompilerPass getProcessor(Compiler compiler) {
return new JsdocToEs6TypedConverter(compiler);
}
@Override
protected int getNumRepetitions() {
return 1;
}
public void testNullType() {
assertSource("/** @type {null} */ var n;")
.transpilesTo("var n;");
}
public void testUntypedVarargs() {
assertSource("/** @param {function(this:T, ...)} fn */ function f(fn) {}")
.transpilesTo("function f(fn: (...p1) => any) {\n}\n;");
}
public void testAnyTypeVarargsParam() {
assertSource("/** @param {...*} v */ function f(v){}")
.transpilesTo("function f(...v: any[]) {\n}\n;");
}
public void testUnionWithUndefined() {
assertSource("/** @param {Object|undefined} v */ function f(v){}")
.transpilesTo("function f(v: Object) {\n}\n;");
}
public void testUnionWithNullAndUndefined() {
assertSource("/** @param {null|undefined} v */ function f(v){}")
.transpilesTo("function f(v) {\n}\n;");
}
public void testFunctionType() {
assertSource("/** @type {function(string,number):boolean} */ var n;")
.transpilesTo("var n: (p1: string, p2: number) => boolean;");
}
public void testTypeUnion() {
assertSource("/** @type {(number|boolean)} */ var n;")
.transpilesTo("var n: number | boolean;");
}
public void testArrayType() {
assertSource("/** @type {Array.<string>} */ var s;")
.transpilesTo("var s: string[];");
assertSource("/** @type {!Array.<!$jscomp.typecheck.Checker>} */ var s;")
.transpilesTo("var s: $jscomp.typecheck.Checker[];");
}
public void testRecordType() {
assertSource("/** @type {{myNum: number, myObject}} */ var s;")
.transpilesTo("var s: {myNum:number, myObject};");
}
public void testParameterizedType() {
assertSource("/** @type {MyCollection.<string>} */ var s;")
.transpilesTo("var s: MyCollection<string>;");
assertSource("/** @type {Object.<string, number>} */ var s;")
.transpilesTo("var s: Object<string, number>;");
assertSource("/** @type {Object.<number>} */ var s;")
.transpilesTo("var s: Object<any, number>;");
}
public void testParameterizedTypeWithVoid() throws Exception {
assertSource("/** @return {!goog.async.Deferred.<void>} */ f = function() {};")
.transpilesTo("f = function(): goog.async.Deferred {\n};");
}
public void testOptionalParameterTypeWithUndefined() throws Exception {
assertSource("/** @param {(null|undefined)=} opt_ignored */ f = function(opt_ignored) {};")
.transpilesTo("f = function(opt_ignored) {\n};");
}
private SourceTranslationSubject assertSource(String... s) {
return new SourceTranslationSubject(THROW_ASSERTION_ERROR, s);
}
private class SourceTranslationSubject
extends Subject<SourceTranslationSubject, String[]> {
public SourceTranslationSubject(FailureStrategy failureStrategy, String[] s)
{
super(failureStrategy, s);
}
private String doCompile(String... lines) {
compiler.init(
externsInputs,
asList(SourceFile.fromCode("expected", LINE_JOINER.join(lines))),
getOptions());
compiler.setErrorManager(new TestErrorManager());
Node root = compiler.parseInputs();
getProcessor(compiler).process(root.getFirstChild(), root.getLastChild());
return compiler.toSource();
}
public void transpilesTo(String... lines) {
assertThat(doCompile(actual()).trim())
.isEqualTo("'use strict';" + LINE_JOINER.join(lines));
}
}
}