org.openrewrite.java.cleanup.EqualsAvoidsNullTest.kt Maven / Gradle / Ivy
/*
* Copyright 2020 the original author or 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
*
* https://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 org.openrewrite.java.cleanup
import org.junit.jupiter.api.Test
import org.openrewrite.Recipe
import org.openrewrite.Tree.randomId
import org.openrewrite.java.JavaParser
import org.openrewrite.java.JavaRecipeTest
import org.openrewrite.style.NamedStyles
@Suppress("ClassInitializerMayBeStatic", "StatementWithEmptyBody", "ConstantConditions")
interface EqualsAvoidsNullTest: JavaRecipeTest {
override val recipe: Recipe?
get() = EqualsAvoidsNull()
@Test
fun invertConditional(jp: JavaParser) = assertChanged(
jp,
before = """
public class A {
{
String s = null;
if(s.equals("test")) {}
if(s.equalsIgnoreCase("test")) {}
}
}
""",
after = """
public class A {
{
String s = null;
if("test".equals(s)) {}
if("test".equalsIgnoreCase(s)) {}
}
}
"""
)
@Test
fun ignoreEqualsIgnoreCase(jp: JavaParser.Builder<*,*>) = assertChanged(
jp.styles(listOf(
NamedStyles(randomId(), "test", "", "", emptySet(), listOf(EqualsAvoidsNullStyle(true)))
)).build(),
before = """
public class A {
{
String s = null;
if(s.equals("test")) {}
if(s.equalsIgnoreCase("test")) {}
}
}
""",
after = """
public class A {
{
String s = null;
if("test".equals(s)) {}
if(s.equalsIgnoreCase("test")) {}
}
}
"""
)
@Test
fun removeUnnecessaryNullCheckAndParens(jp: JavaParser) = assertChanged(
jp,
before = """
public class A {
{
String s = null;
if((s != null && s.equals("test"))) {}
if(s != null && s.equals("test")) {}
if(null != s && s.equals("test")) {}
}
}
""",
after = """
public class A {
{
String s = null;
if("test".equals(s)) {}
if("test".equals(s)) {}
if("test".equals(s)) {}
}
}
"""
)
}