Android unit testing encounter pits
1
“`ruby
junit.framework.AssertionFailedError: Exception in constructor: testCheckText (java.lang.NoClassDefFoundError: ait.common.testunittest.app.MainActivity2
at ait.common.testunittest.app.test.MainActivity2Test.(MainActivity2Test.java:18)
at java.lang.reflect.Constructor.constructNative(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at junit.framework.TestSuite.createTest(TestSuite.java:61)
at junit.framework.TestSuite.addTestMethod(TestSuite.java:294)
at junit.framework.TestSuite.addTestsFromTestCase(TestSuite.java:150)
at junit.framework.TestSuite.(TestSuite.java:129)
at android.support.test.internal.runner.junit3.NonLeakyTestSuite.(NonLeakyTestSuite.java:34)
at android.support.test.internal.runner.junit3.AndroidTestSuite.(AndroidTestSuite.java:43)
at android.support.test.internal.runner.junit3.AndroidJUnit3Builder.runnerForClass(AndroidJUnit3Builder.java:50)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
at org.junit.runner.Computer.getRunner(Computer.java:38)
”’
主要是以为类库的原因导致的
解决方法
androidTestCompile ‘com.android.support.test.espresso:espresso-core:2.0’
androidTestCompile ‘com.android.support.test:testing-support-lib:0.1’
androidTestCompile (‘com.android.support.test.espresso:espresso-contrib:2.0’) {
exclude group: ‘com.android.support’, module: ‘appcompat’
exclude group: ‘com.android.support’, module: ‘support-v4’
exclude module: ‘recyclerview-v7’
}
Solutions from: http://stackoverflow.com/questions/27591921/junit-framework-assertionfailederror-exception-in-constructor-java-lang-nocla
