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FunctionTypeBuilderTest.java
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FunctionTypeBuilderTest.java
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/*
* Copyright 2009 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.javascript.rhino.testing.BaseJSTypeTestCase.ALL_NATIVE_EXTERN_TYPES;
import com.google.common.collect.ImmutableList;
import com.google.javascript.rhino.FunctionTypeI;
import com.google.javascript.rhino.Node;
import com.google.javascript.rhino.jstype.FunctionType;
import com.google.javascript.rhino.jstype.ObjectType;
import java.util.List;
/**
* Unit tests for {@link FunctionTypeBuilder}.
*
*/
public final class FunctionTypeBuilderTest extends CompilerTestCase {
@Override
protected void setUp() throws Exception {
super.setUp();
enableParseTypeInfo();
enableTypeCheck();
}
@Override
protected CompilerPass getProcessor(Compiler compiler) {
// By turning on type checking, the FunctionTypeBuilder will be invoked.
return new CompilerPass() {
@Override
public void process(Node externs, Node js) {}
};
}
@Override
protected int getNumRepetitions() {
return 1;
}
public void testValidBuiltInTypeRedefinition() throws Exception {
testSame(ALL_NATIVE_EXTERN_TYPES, "");
}
public void testBuiltInTypeDifferentReturnType() throws Exception {
testSame(
"/**\n"
+ " * @constructor\n"
+ " * @param {*} opt_str\n"
+ " * @return {number}\n"
+ " */\n"
+ "function String(opt_str) {}\n",
"", FunctionTypeBuilder.TYPE_REDEFINITION,
"attempted re-definition of type String\n"
+ "found : function (new:String, *=): number\n"
+ "expected: function (new:String, *=): string");
}
public void testBuiltInTypeDifferentNumParams() throws Exception {
testSame(
"/**\n"
+ " * @constructor\n"
+ " * @return {string}\n"
+ " */\n"
+ "function String() {}\n",
"", FunctionTypeBuilder.TYPE_REDEFINITION,
"attempted re-definition of type String\n"
+ "found : function (new:String): string\n"
+ "expected: function (new:String, *=): string");
}
public void testBuiltInTypeDifferentNumParams2() throws Exception {
testSame(
"/**\n"
+ " * @constructor\n"
+ " * @return {string}\n"
+ " */\n"
+ "function String(opt_str, opt_nothing) {}\n",
"", FunctionTypeBuilder.TYPE_REDEFINITION,
"attempted re-definition of type String\n"
+ "found : function (new:String, ?=, ?=): string\n"
+ "expected: function (new:String, *=): string");
}
public void testBuiltInTypeDifferentParamType() throws Exception {
testSame(
"/**\n"
+ " * @constructor\n"
+ " * @return {string}\n"
+ " */\n"
+ "function String(opt_str) {}\n",
"", FunctionTypeBuilder.TYPE_REDEFINITION,
"attempted re-definition of type String\n"
+ "found : function (new:String, ?=): string\n"
+ "expected: function (new:String, *=): string");
}
public void testBadFunctionTypeDefinition() throws Exception {
testSame(
"/** @constructor */function Function(opt_str) {}\n",
"", FunctionTypeBuilder.TYPE_REDEFINITION,
"attempted re-definition of type Function\n"
+ "found : function (new:Function, ?=): ?\n"
+ "expected: function (new:Function, ...*): ?");
}
public void testInlineJsDoc() throws Exception {
testSame(
"/** @return {number} */ function f(/** string */ x) { return x; }", "",
TypeValidator.TYPE_MISMATCH_WARNING,
"inconsistent return type\n" +
"found : string\n" +
"required: number");
}
public void testInlineJsDoc2() throws Exception {
testSame(
"/** @return {T} \n @template T */ " +
"function f(/** T */ x) { return x; }" +
"/** @type {string} */ var x = f(1);", "",
TypeValidator.TYPE_MISMATCH_WARNING,
"initializing variable\n" +
"found : number\n" +
"required: string");
}
public void testExternSubTypes() throws Exception {
testSame(ALL_NATIVE_EXTERN_TYPES, "");
List<FunctionTypeI> subtypes =
ImmutableList.copyOf(
((ObjectType) getLastCompiler().getTypeRegistry().getType("Error"))
.getConstructor().getDirectSubTypes());
for (FunctionTypeI type : subtypes) {
String typeName = type.getInstanceType().toString();
FunctionType typeInRegistry = ((ObjectType) getLastCompiler()
.getTypeRegistry().getType(typeName)).getConstructor();
assertSame(type, typeInRegistry);
}
}
}