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ApiTest.java
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ApiTest.java
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/*
* Copyright 2022 The Error Prone 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.errorprone.bugpatterns.checkreturnvalue;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertThrows;
import com.google.common.collect.ImmutableSet;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for {@link Api}. */
@RunWith(JUnit4.class)
public final class ApiTest {
private static final ImmutableSet<String> UNPARSEABLE_APIS =
ImmutableSet.of(
"",
"#()",
"#(java.lang.String)",
"#foo()",
"#foo(java.lang.String)",
"java.lang.String",
"java.lang.String##foo()",
"java.lang.String#fo#o()",
"java.lang.String#()",
"java.lang.String#foo)()",
"java.lang.String#foo)(",
"java.lang.String#<init>(,)",
"java.lang.String#<>()",
"java.lang.String#hi<>()",
"java.lang.String#<>hi()",
"java.lang.String#hi<init>()",
"java.lang.String#<init>hi()",
"java.lang.String#<iniT>()",
"java.lang.String#<init>((java.lang.String)",
"java.lang.String#<init>(java.lang.String",
"java.lang.String#<init>(java.lang.String,)",
"java.lang.String#<init>(,java.lang.String)",
"java.lang.String#<init>(java.lang.String))");
@Test
public void parseApi_badInputs() {
// TODO(b/223670489): would be nice to use expectThrows() here
for (String badApi : UNPARSEABLE_APIS) {
assertThrows(
"Api.parse(\"" + badApi + "\")", IllegalArgumentException.class, () -> Api.parse(badApi));
}
}
@Test
public void parseApi_constructorWithoutParams() {
String string = "com.google.async.promisegraph.testing.TestPromiseGraphModule#<init>()";
Api api = Api.parse(string);
assertThat(api.className())
.isEqualTo("com.google.async.promisegraph.testing.TestPromiseGraphModule");
assertThat(api.methodName()).isEqualTo("<init>");
assertThat(api.parameterTypes()).isEmpty();
assertThat(api.isConstructor()).isTrue();
assertThat(api.toString()).isEqualTo(string);
}
@Test
public void parseApi_constructorWithParams() {
String string = "com.google.api.client.http.GenericUrl#<init>(java.lang.String)";
Api api = Api.parse(string);
assertThat(api.className()).isEqualTo("com.google.api.client.http.GenericUrl");
assertThat(api.methodName()).isEqualTo("<init>");
assertThat(api.parameterTypes()).containsExactly("java.lang.String").inOrder();
assertThat(api.isConstructor()).isTrue();
assertThat(api.toString()).isEqualTo(string);
}
@Test
public void parseApi_methodWithoutParams() {
String string = "com.google.api.services.drive.model.File#getId()";
Api api = Api.parse(string);
assertThat(api.className()).isEqualTo("com.google.api.services.drive.model.File");
assertThat(api.methodName()).isEqualTo("getId");
assertThat(api.parameterTypes()).isEmpty();
assertThat(api.isConstructor()).isFalse();
assertThat(api.toString()).isEqualTo(string);
}
@Test
public void parseApi_methodWithParamsAndSpaces() {
String string =
"com.google.android.libraries.stitch.binder.Binder"
+ "#get(android.content.Context,java.lang.Class)";
Api api = Api.parse(string);
assertThat(api.methodName()).isEqualTo("get");
assertThat(api.parameterTypes())
.containsExactly("android.content.Context", "java.lang.Class")
.inOrder();
assertThat(api.isConstructor()).isFalse();
assertThat(api.toString()).isEqualTo(string);
}
@Test
public void parseApi_methodWithArray_b219754967() {
IllegalArgumentException thrown =
assertThrows(
"b/219754967 - cannot parse array signatures",
IllegalArgumentException.class,
() ->
Api.parse(
"com.google.inject.util.Modules.OverriddenModuleBuilder"
+ "#with(com.google.inject.Module[])"));
assertThat(thrown).hasMessageThat().contains("'[' is not a valid identifier");
}
}