Files
app_Settings/tests/unit
Jeremy Goldman ae03dd39da DataUsageSummaryPreferenceTest converted to JUnit
There are couple of newly explored concepts in this CL, which will
hopefully be useful for migrating other tests in the future as well. In
broad strokes, the changes to this file cover:

Android build file species the preferences library, in order to access
PreferenceViewHolder.createInstanceForTests.
Resource ids in JUnit tests differ from the Settings apk. This is true
not only of strings but also views and layouts. Helper functions added
to main class to access the layouts needed by the test.
Shadow activities are not needed to view layouts, the context can be
used.
Context startActivity can be mocked and verified in order to capture and
examine the intent created by the library under test.

Bug: 175389659
Test: atest -c DataUsageSummaryPreferenceTest
Change-Id: Ib8cb87f0299c47a32c3f5d3af7edb20592b727ec
2020-12-21 12:39:02 +08:00
..

The simplest way to run all SettingsUnitTests is with atest
$ atest SettingsUnitTests

A single class can also be tested with the following command
$ atest -c <YourClassName>

// The following instrutions show how to run the test suite using make + adb //

To build the tests you can use the following command at the root of your android source tree
$ make SettingsUnitTests

The test apk then needs to be installed onto your test device. The apk's location will vary
depending on your device model and architecture. At the end of the make command's output, there
should be a line similar to the following:
"Copy: out/target/product/shamu/testcases/SettingsUnitTests/arm64/SettingsUnitTests.apk"
Install via the following command:
$ adb install -r out/target/product/shamu/testcases/SettingsUnitTests/arm64/SettingsUnitTests.apk

To run all tests:
$ adb shell am instrument -w com.android.settings.tests.unit/androidx.test.runner.AndroidJUnitRunner

To run all tests in a specific class:
$ adb shell am instrument -w -e class com.android.settings.<class> com.android.settings.tests.unit/androidx.test.runner.AndroidJUnitRunner

To run a specific test:
$ adb shell am instrument -w -e class com.android.settings.<class>#<test> com.android.settings.tests.unit/androidx.test.runner.AndroidJUnitRunner

More general information can be found at
http://developer.android.com/reference/android/support/test/runner/AndroidJUnitRunner.html