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--- robolectric [2019/08/24 20:27] – 만듦 lindol
+++ robolectric [2020/09/12 17:45] (현재) – lindol
@@ 줄 1: / 줄 1: @@
+====== Setup ======
+Add dependency to build.gradle in your app module
 <code Groovy>
-    testImplementation 'org.robolectric:robolectric:4.2'
+    testImplementation 'org.robolectric:robolectric:4.3'
     testImplementation 'androidx.test:core:1.0.0'
+</code>
+===== Why robolectric needs to use jdk9 from Q =====
+Robolectric 이 AOSP framework build 에 기반해서 만들어지는데, Anroid Q 부터 java build toolchain이 java9로 변경된 관계로 jdk9를 쓸 수 밖에 없다고 함.
+관련 링크: https://github.com/robolectric/robolectric/issues/5258
+====== Troubleshooting ======
+Android studio 4.0에서 OpenJdk 11 (or 9이상)으로 Robolectric Unit test 실행시 아래의 에러가 날 경우
+<code Bash>
+WARNING: An illegal reflective access operation has occurred
+WARNING: Illegal reflective access by org.robolectric.util.ReflectionHelpers$6 (file:/Users/lindol/.gradle/caches/modules-2/files-2.1/org.robolectric/shadowapi/4.3/81dfcf4a45b623b7744e46358d01c7ce054d0fff/shadowapi-4.3.jar) to method java.lang.ClassLoader.getPackage(java.lang.String)
+WARNING: Please consider reporting this to the maintainers of org.robolectric.util.ReflectionHelpers$6
+WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
+WARNING: All illegal access operations will be denied in a future release
+[Robolectric] com.example.unittest.MainActivityTest.testSimpleLoad: sdk=28; resources=BINARY
+Downloading from maven
+Downloading: org/robolectric/android-all/Q-robolectric-5415296/android-all-Q-robolectric-5415296.pom from repository sonatype at https://oss.sonatype.org/content/groups/public/
+Error transferring file: java.security.NoSuchAlgorithmException: Error constructing implementation (algorithm: Default, provider: SunJSSE, class: sun.security.ssl.SSLContextImpl$DefaultSSLContext)
+[WARNING] Unable to get resource 'org.robolectric:android-all:pom:Q-robolectric-5415296' from repository sonatype (https://oss.sonatype.org/content/groups/public/): Error transferring file: java.security.NoSuchAlgorithmException: Error constructing implementation (algorithm: Default, provider: SunJSSE, class: sun.security.ssl.SSLContextImpl$DefaultSSLContext)
+</code>
+해결 방법: Robolectric 4.4 로 버전 올리기 ([[https://github.com/robolectric/robolectric/issues/5456|4.4 버전에서 수정됨]])
+<code Groovy>
+   testImplementation 'org.robolectric:robolectric:4.4'
 </code>
 ====== References ======
+  * [[http://robolectric.org|Robolectric]] - official website
   * [[https://developer.android.com/training/testing/set-up-project|Set up project for AndroidX Test]]
   * [[https://github.com/robolectric/robolectric/blob/master/robolectric/src/test/java/org/robolectric/shadows/ShadowTelephonyManagerTest.java|ShadowTelephonyManagerTest.java]]
+  * [[http://robolectric.org/extending/|Shadows]]
+  * [[https://meetup.toast.com/posts/187|[Android] Unit Testing Framework - Robolectric]]
+  * [[https://www.codexpedia.com/android/robolectric-unit-test-sample-code-for-android/|Robolectric Unit Test Sample Code for Android]]
+  * [[http://robolectric.org/blog/2019/06/04/paused-looper/|Improving Robolectric's Looper simulation]]
+  * [[https://developer.android.com/reference/androidx/test/core/app/ActivityScenario|ActivityScenario]]