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CodePrinterEs6TypedTest.java
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CodePrinterEs6TypedTest.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 com.google.javascript.jscomp.CompilerOptions.LanguageMode;
/**
* Round-trip test for TypeScript-style inline type syntax. Each expression is
* parsed and then printed, and we assert that the pretty-printed result is identical
* to the input.
*
* <p>See {@link JsdocToEs6TypedConverterTest} for tests which start from
* closure-style JSDoc type declaration syntax.
*/
public final class CodePrinterEs6TypedTest extends CodePrinterTestBase {
@Override
protected void setUp() throws Exception {
super.setUp();
languageMode = LanguageMode.ECMASCRIPT6_TYPED;
}
void assertPrettyPrintSame(String js) {
String parsed = parsePrint(js, newCompilerOptions(new CompilerOptionBuilder() {
@Override void setOptions(CompilerOptions options) {
options.setPrettyPrint(true);
options.setPreferLineBreakAtEndOfFile(false);
options.setPreferSingleQuotes(true);
}
}));
parsed = parsed.trim(); // strip trailing line break.
assertEquals(js, parsed);
}
public void testVariableDeclaration() {
assertPrettyPrintSame("var foo: any = 'hello';");
assertPrettyPrintSame("var foo: number = 'hello';");
assertPrettyPrintSame("var foo: boolean = 'hello';");
assertPrettyPrintSame("var foo: string = 'hello';");
assertPrettyPrintSame("var foo: void = 'hello';");
assertPrettyPrintSame("var foo: hello = 'hello';");
}
public void testFunctionParamDeclaration() {
assertPrettyPrintSame("function foo(x: string) {\n}");
}
public void testFunctionParamDeclaration_defaultValue() {
assertPrettyPrintSame("function foo(x: string = 'hello') {\n}");
}
public void disabled_testFunctionParamDeclaration_arrow() {
assertPrettyPrintSame("(x: string) => 'hello' + x;");
}
public void testFunctionReturn() {
assertPrettyPrintSame("function foo(): string {\n return 'hello';\n}");
}
public void disabled_testFunctionReturn_arrow() {
assertPrettyPrintSame("(): string => 'hello';");
}
public void testCompositeType() {
assertPrettyPrintSame("var foo: mymod.ns.Type;");
}
public void testArrayType() {
assertPrettyPrintSame("var foo: string[];");
}
public void testArrayType_qualifiedType() {
assertPrettyPrintSame("var foo: mymod.ns.Type[];");
}
public void testParameterizedType() {
assertPrettyPrintSame("var x: my.parameterized.Type<ns.A, ns.B>;");
}
}