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/*
* Copyright 2003-2012 Dave Griffith, Bas Leijdekkers
*
* 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.siyeh.ig.junit;
import com.intellij.codeInspection.ProblemDescriptor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.*;
import com.intellij.psi.util.InheritanceUtil;
import com.intellij.util.IncorrectOperationException;
import com.siyeh.InspectionGadgetsBundle;
import com.siyeh.ig.BaseInspection;
import com.siyeh.ig.BaseInspectionVisitor;
import com.siyeh.ig.InspectionGadgetsFix;
import com.siyeh.ig.psiutils.TypeUtils;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class MisorderedAssertEqualsParametersInspection extends BaseInspection {
@Nullable
@Override
public String getAlternativeID() {
return "MisorderedAssertEqualsArguments";
}
@Override
@NotNull
public String getDisplayName() {
return InspectionGadgetsBundle.message("misordered.assert.equals.parameters.display.name");
}
@Override
@NotNull
protected String buildErrorString(Object... infos) {
return InspectionGadgetsBundle.message("misordered.assert.equals.parameters.problem.descriptor");
}
@Override
public InspectionGadgetsFix buildFix(Object... infos) {
return new FlipParametersFix();
}
private static class FlipParametersFix extends InspectionGadgetsFix {
@Override
@NotNull
public String getFamilyName() {
return getName();
}
@Override
@NotNull
public String getName() {
return InspectionGadgetsBundle.message("misordered.assert.equals.parameters.flip.quickfix");
}
@Override
public void doFix(Project project, ProblemDescriptor descriptor) throws IncorrectOperationException {
final PsiElement methodNameIdentifier = descriptor.getPsiElement();
final PsiElement parent = methodNameIdentifier.getParent();
assert parent != null;
final PsiMethodCallExpression callExpression = (PsiMethodCallExpression)parent.getParent();
assert callExpression != null;
final PsiReferenceExpression methodExpression = callExpression.getMethodExpression();
final PsiMethod method = (PsiMethod)methodExpression.resolve();
assert method != null;
final PsiParameterList parameterList = method.getParameterList();
final PsiParameter[] parameters = parameterList.getParameters();
final PsiType stringType = TypeUtils.getStringType(callExpression);
final PsiType parameterType1 = parameters[0].getType();
final PsiExpressionList argumentList = callExpression.getArgumentList();
final PsiExpression[] arguments = argumentList.getExpressions();
final PsiExpression actualArgument;
final PsiExpression expectedArgument;
if (parameterType1.equals(stringType) && parameters.length > 2) {
expectedArgument = arguments[1];
actualArgument = arguments[2];
}
else {
expectedArgument = arguments[0];
actualArgument = arguments[1];
}
final String actualArgumentText = actualArgument.getText();
final String expectedArgumentText = expectedArgument.getText();
replaceExpression(expectedArgument, actualArgumentText);
replaceExpression(actualArgument, expectedArgumentText);
}
}
@Override
public BaseInspectionVisitor buildVisitor() {
return new MisorderedAssertEqualsParametersVisitor();
}
private static class MisorderedAssertEqualsParametersVisitor extends BaseInspectionVisitor {
@Override
public void visitMethodCallExpression(@NotNull PsiMethodCallExpression expression) {
super.visitMethodCallExpression(expression);
final PsiReferenceExpression methodExpression = expression.getMethodExpression();
@NonNls final String methodName = methodExpression.getReferenceName();
if (!"assertEquals".equals(methodName) && !"assertArrayEquals".equals(methodName)) {
return;
}
final PsiMethod method = expression.resolveMethod();
if (method == null) {
return;
}
final PsiClass containingClass = method.getContainingClass();
if (!InheritanceUtil.isInheritor(containingClass, "junit.framework.Assert") &&
!InheritanceUtil.isInheritor(containingClass, "org.junit.Assert")) {
return;
}
final PsiExpressionList argumentList = expression.getArgumentList();
final PsiExpression[] arguments = argumentList.getExpressions();
if (arguments.length < 2) {
return;
}
final PsiType stringType = TypeUtils.getStringType(expression);
final PsiType argumentType1 = arguments[0].getType();
final PsiExpression expectedArgument;
final PsiExpression actualArgument;
if (stringType.equals(argumentType1) && arguments.length > 2) {
expectedArgument = arguments[1];
actualArgument = arguments[2];
}
else {
expectedArgument = arguments[0];
actualArgument = arguments[1];
}
if (expectedArgument == null || actualArgument == null) {
return;
}
if (isLiteralOrConstant(expectedArgument)) {
return;
}
if (!isLiteralOrConstant(actualArgument)) {
return;
}
registerMethodCallError(expression);
}
private static boolean isLiteralOrConstant(PsiExpression expression) {
if (expression instanceof PsiLiteralExpression) {
return true;
}
else if (expression instanceof PsiNewExpression) {
final PsiNewExpression newExpression = (PsiNewExpression)expression;
final PsiExpressionList argumentList = newExpression.getArgumentList();
if (argumentList == null) {
return true;
}
for (PsiExpression argument : argumentList.getExpressions()) {
if (!isLiteralOrConstant(argument)) {
return false;
}
}
return true;
}
if (!(expression instanceof PsiReferenceExpression)) {
return false;
}
final PsiReferenceExpression referenceExpression = (PsiReferenceExpression)expression;
final PsiElement target = referenceExpression.resolve();
if (!(target instanceof PsiField)) {
return false;
}
final PsiField field = (PsiField)target;
return field.hasModifierProperty(PsiModifier.STATIC) && field.hasModifierProperty(PsiModifier.FINAL);
}
}
}
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