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NodeSubject.java
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NodeSubject.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.testing;
import static com.google.common.base.Strings.lenientFormat;
import static com.google.common.truth.Fact.simpleFact;
import static com.google.common.truth.Truth.assertAbout;
import static org.junit.Assert.assertEquals;
import com.google.common.truth.FailureMetadata;
import com.google.common.truth.Subject;
import com.google.javascript.rhino.Node;
import com.google.javascript.rhino.Token;
import javax.annotation.CheckReturnValue;
/**
* A Truth Subject for the Node class. Usage:
* <pre>
* import static com.google.javascript.jscomp.testing.NodeSubject.assertNode;
* ...
* assertNode(node1).isEqualTo(node2);
* assertNode(node1).hasType(Token.FUNCTION);
* </pre>
*/
public final class NodeSubject extends Subject<NodeSubject, Node> {
@CheckReturnValue
public static NodeSubject assertNode(Node node) {
return assertAbout(NodeSubject::new).that(node);
}
public NodeSubject(FailureMetadata failureMetadata, Node node) {
super(failureMetadata, node);
}
public void isEqualTo(Node node) {
String treeDiff = node.checkTreeEquals(actual());
if (treeDiff != null) {
failWithoutActual(simpleFact(lenientFormat("%s", treeDiff)));
}
}
public void hasType(Token type) {
String message = "Node is of type " + actual().getToken() + " not of type " + type;
assertEquals(message, type, actual().getToken());
}
public void isName(String name) {
Node node = actual();
if (!node.isName()) {
failWithActual(simpleFact("expected to be a NAME node"));
}
if (!node.getString().equals(name)) {
failWithActual("expected name to be", name);
}
}
public void matchesQualifiedName(String qname) {
Node node = actual();
if (!node.matchesQualifiedName(qname)) {
failWithActual("expected qualified name", qname);
}
}
public void hasCharno(int charno) {
assertEquals(charno, actual().getCharno());
}
public void hasLineno(int lineno) {
assertEquals(lineno, actual().getLineno());
}
public void hasLength(int length) {
assertEquals(length, actual().getLength());
}
}