| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * 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 android.util; |
| |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.fail; |
| |
| import android.support.test.runner.AndroidJUnit4; |
| import android.test.suitebuilder.annotation.SmallTest; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @SmallTest |
| @RunWith(AndroidJUnit4.class) |
| public final class LogNullabilityTest { |
| @Test |
| public void nullTag() { |
| Log.v(null, ""); |
| Log.d(null, ""); |
| Log.i(null, ""); |
| Log.w(null, ""); |
| Log.e(null, ""); |
| Log.wtf(null, ""); |
| Log.wtfStack(null, ""); |
| Log.println(Log.INFO, null, ""); |
| |
| // Implicit assertions of not crashing. |
| } |
| |
| @Test |
| public void nullTagWithThrowable() { |
| Log.v(null, "", new Throwable()); |
| Log.d(null, "", new Throwable()); |
| Log.i(null, "", new Throwable()); |
| Log.w(null, "", new Throwable()); |
| Log.e(null, "", new Throwable()); |
| Log.wtf(null, "", new Throwable()); |
| Log.printlns(Log.LOG_ID_MAIN, Log.INFO, null, "", new Throwable()); |
| |
| // Implicit assertions of not crashing. |
| } |
| |
| @Test |
| public void nullMessage() { |
| try { |
| Log.v("", null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| try { |
| Log.d("", null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| try { |
| Log.i("", null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| try { |
| // Explicit cast needed because there's a weird (String, Throwable) overload. |
| Log.w("", (String) null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| try { |
| Log.e("", null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| |
| Log.wtf("", (String) null); |
| Log.wtfStack("", (String) null); |
| |
| // Implicit assertion of not crashing. |
| |
| try { |
| Log.println(Log.INFO, "", null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @Test |
| public void nullMessageWithThrowable() { |
| Log.v("", null, new Throwable()); |
| Log.d("", null, new Throwable()); |
| Log.i("", null, new Throwable()); |
| Log.w("", null, new Throwable()); |
| Log.e("", null, new Throwable()); |
| Log.wtf("", null, new Throwable()); |
| |
| // Implicit assertions of not crashing. |
| |
| try { |
| Log.printlns(Log.LOG_ID_MAIN, Log.INFO, "", null, new Throwable()); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @Test |
| public void nullThrowable() { |
| Log.v("", "", null); |
| Log.d("", "", null); |
| Log.i("", "", null); |
| Log.w("", "", null); |
| Log.e("", "", null); |
| Log.wtf("", "", null); |
| |
| // Warning has its own (String, Throwable) overload. |
| Log.w("", (Throwable) null); |
| |
| Log.printlns(Log.LOG_ID_MAIN, Log.INFO, "", "", null); |
| |
| // Implicit assertions of not crashing. |
| |
| // WTF has its own (String, Throwable) overload with different behavior. |
| try { |
| Log.wtf("", (Throwable) null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @Test |
| public void nullMessageWithNullThrowable() { |
| Log.v("", null, null); |
| Log.d("", null, null); |
| Log.i("", null, null); |
| Log.w("", null, null); |
| Log.e("", null, null); |
| Log.wtf("", null, null); |
| |
| // Implicit assertions of not crashing. |
| |
| try { |
| Log.printlns(Log.LOG_ID_MAIN, Log.INFO, "", null, null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @Test |
| public void nullTagIsLoggable() { |
| Log.isLoggable(null, Log.INFO); |
| |
| // Implicit assertion of not crashing. |
| } |
| |
| @Test |
| public void nullGetStackTraceString() { |
| assertNotNull(Log.getStackTraceString(null)); |
| } |
| } |