/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* 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.imports;
import com.intellij.codeInspection.LocalInspectionTool;
import com.siyeh.ig.LightInspectionTestCase;
public class UnusedImportInspectionTest extends LightInspectionTestCase {
public void testInnerClassImport() {
addEnvironmentClass("package pkg;" +
"interface Action {" +
" interface SuperInnerInterface {}" +
"}");
addEnvironmentClass("package pkg;" +
"class ConceteAction implements Action {" +
" interface SubInnerInterface {}" +
"}");
doTest("package pkg;" +
"import pkg.Action.SuperInnerInterface;" +
"import pkg.ConceteAction.*;" +
"class Main {" +
" SubInnerInterface innerClass;" +
" void k() {" +
" new SuperInnerInterface() { };" +
" }" +
"}");
doTest("package pkg;" +
"/*Unused import 'import pkg.Action.SuperInnerInterface;'*/import pkg.Action.SuperInnerInterface;/**/" +
"import static pkg.ConceteAction.*;" +
"class Main {" +
" SubInnerInterface innerClass;" +
" void k() {" +
" new SuperInnerInterface() { };" +
" }" +
"}");
}
public void testShadowedImports() {
addEnvironmentClass("package java.util; public class HashTable {}");
addEnvironmentClass("package java.util; public class List {}");
addEnvironmentClass("package java.awt; public class List { public static final int ABORT = 1; }");
addEnvironmentClass("package java.awt; public class Component {}");
doTest("package test;" +
"import java.util.*;" +
"import java.awt.*;" +
"import java.awt.List;" +
"class Bar2 extends Component {" +
" void foo() {" +
" new Hashtable();" +
" System.out.println(List.ABORT);" +
" }" +
"}");
}
public void testStaticImport() {
doTest("/*Unused import 'import java.util.Map.*;'*/import java.util.Map.*;/**/" +
"import static java.util.Map.*;" +
"class X { " +
" void m(Entry e) {}" +
"}");
}
public void testStaticImport2() {
doTest("import static java.lang.Math.*;" +
"class X {" +
" static {" +
" System.out.println(\"\"+PI);" +
" }" +
"}");
}
public void testExactStaticImport() {
doTest("package a;\n" +
"import static java.lang.Math.abs;\n" +
"/*Unused import 'import static java.lang.Math.max;'*/import static java.lang.Math.max;/**/\n" +
"class Main {{\n" +
" abs(1);\n" +
"}}");
}
public void testStaticImportOnDemandConflict1() {
addEnvironmentClass("package a;" +
"public class Parent {" +
" public static final int FOOBAR = 1;" +
" public static class FooBar {}" +
"}");
addEnvironmentClass("package a;" +
"public class FooBar {" +
"}");
doTest("package b;\n" +
"import a.*;\n" +
"import a.FooBar;\n" +
"import static a.Parent.*;\n" +
"class Main {\n" +
" public static void main() {\n" +
" Parent parent = new Parent();\n" +
" int i = FOOBAR;\n" +
" FooBar foobar = new FooBar();\n" +
" }\n" +
"}");
}
public void testStaticImportOnDemandConflict2() {
addEnvironmentClass("package a;" +
"public class Parent {" +
" public static final int FOOBAR = 1;" +
" public static class FooBar {}" +
"}");
addEnvironmentClass("package a;" +
"public class FooBar {" +
"}");
doTest("package b;\n" +
"import a.*;\n" +
"import static a.Parent.*;\n" +
"import static a.Parent.FooBar;\n" +
"class Main {\n" +
" public static void main() {\n" +
" Parent parent = new Parent();\n" +
" int i = FOOBAR;\n" +
" FooBar foobar = new FooBar();\n" +
" }\n" +
"}");
}
public void testInherited() {
addEnvironmentClass("package a;" +
"class GrandParent {" +
" public static final int FOOBAR = 1;" +
"}");
addEnvironmentClass("package a;" +
"public class Parent extends GrandParent {" +
"}");
doTest("package b;\n" +
"import static a.Parent.*;\n" +
"class Main {\n" +
" public static void main() {\n" +
" int i = FOOBAR;\n" +
" }\n" +
"}");
}
public void testNoWarning() {
doTest("import java.util.List;" +
"import java.util.ArrayList;" +
"import static java.lang.Integer.SIZE;" +
"class X {" +
" private final List<Integer> list = new ArrayList<Integer>(SIZE);" +
" public void add(int i) {" +
" list.add(i);" +
" }" +
"}");
}
public void testInnerClassAndMethod() {
addEnvironmentClass("package one; public class X { public class Inner {} public static void method() {}}");
doTest("package one;" +
"import static one.X.*; " +
"import one.X.*;" +
" class Y { " +
" void m() {" +
" method(); " +
" Inner inner = new X().new Inner();" +
" }" +
"}");
}
public void testRedundantImport() {
doTest("/*Unused import 'import java.util.ArrayList;'*/import java.util.ArrayList;/**/" +
"import java.util.ArrayList;" +
"class X { " +
" void foo(ArrayList l) {}" +
"}");
}
public void testNoWarn() {
addEnvironmentClass("package java.awt; public class List extends Component {}");
doTest("import javax.swing.*;\n" +
"import java.awt.*;\n" +
"import java.util.*;\n" +
"import java.util.List;\n" +
"\n" +
"class ImportTest extends Component {\n" +
"\n" +
" Collection<String> c;\n" +
" List<Integer> l;\n" +
" JComponent jc;\n" +
"}");
}
public void testOrderIsNotImportant() {
doTest("package a;" +
"import java.util.*;" +
"/*Unused import 'import java.util.List;'*/import java.util.List;/**/" +
"class X {{" +
" List list = new ArrayList();" +
"}}");
}
public void testConflictInSamePackage() {
addEnvironmentClass("package a; public class List {}");
doTest("package a;" +
"import java.util.List;" +
"import java.util.*;" +
"class X {{" +
" List list = new ArrayList();" +
"}}");
}
public void testNoConflictInSamePackage() {
doTest("package a;" +
"/*Unused import 'import java.util.List;'*/import java.util.List;/**/" +
"import java.util.*;" +
"class X {{" +
" List list = new ArrayList();" +
"}}");
}
@Override
protected LocalInspectionTool getInspection() {
return new UnusedImportInspection();
}
}