GrantPermissionCallable: Permission: android.permission.SET_TIME cannot be granted

Question

I'm trying to use the new GrantPermissionRule that's a part of the latest support library.

In my Manifest I declare the following:

<uses-permission android:name="android.permission.SET_TIME"/>
And in my code I call:

@Rule
public GrantPermissionRule mPermissionRule = GrantPermissionRule.grant(Manifest.permission.SET_TIME);

But when I run the test I see the error:

12-28 14:09:35.063 7193-7215/com.blah.test E/GrantPermissionCallable: Permission: android.permission.SET_TIME cannot be granted!
12-28 14:09:35.066 7193-7215/com.blah I/TestRunner: failed: maxOfflineWithChangingDeviceTime(com.blah)
12-28 14:09:35.066 7193-7215/com.blah I/TestRunner: ----- begin exception -----
12-28 14:09:35.073 7193-7215/com.blah I/TestRunner: junit.framework.AssertionFailedError: Failed to grant permissions, see logcat for details
                                                                              at junit.framework.Assert.fail(Assert.java:50)
                                                                              at android.support.test.runner.permission.PermissionRequester.requestPermissions(PermissionRequester.java:110)
                                                                              at android.support.test.rule.GrantPermissionRule$RequestPermissionStatement.evaluate(GrantPermissionRule.java:108)
                                                                              at org.junit.rules.RunRules.evaluate(RunRules.java:20)
                                                                              at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
                                                                              at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
                                                                              at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
                                                                              at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
                                                                              at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
                                                                              at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
                                                                              at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
                                                                              at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
                                                                              at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
                                                                              at org.junit.runners.Suite.runChild(Suite.java:128)
                                                                              at org.junit.runners.Suite.runChild(Suite.java:27)
                                                                              at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
                                                                              at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
                                                                              at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
                                                                              at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
                                                                              at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
                                                                              at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
                                                                              at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
                                                                              at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
                                                                              at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:58)
                                                                              at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:375)
                                                                              at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1932)
12-28 14:09:35.073 7193-7215/com.blah I/TestRunner: ----- end exception -----

My build.gradle has the following lines updated:

androidTestCompile 'com.android.support.test:runner:1.0.1'
androidTestCompile 'com.android.support.test:rules:1.0.1'
androidTestCompile 'com.android.support.test.espresso:espresso-core:3.0.0'

Any suggestions or solutions?

@dazza5000 see my suggestion below: https://stackoverflow.com/a/65914790 — Bruno Bieri, Jan 27 '21 at 07:43

score 6 · Accepted Answer · answered Dec 28 '17 at 19:29

6

SET_TIME is a signature|privileged-level permission. You cannot request it at runtime, whether using requestPermissions() or GrantPermissionRule.

And, unless you are building your own firmware or are planning on your app being installed by root users on the privileged partition, you may as well remove the <uses-permission> element from the manifest.

answered Dec 28 '17 at 19:29

CommonsWare

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So, is there anyway to change the system time at all for unit tests? – Faux Pas Dec 28 '17 at 19:38
1

@FauxPas: Beats me. You could [try `adb`](https://stackoverflow.com/q/19496907/115145) on a rooted device or emulator. Or, perhaps revise your app to allow for pluggable time sources (e.g., via dependency injection), so in your tests you can provide some controlled time source. – CommonsWare Dec 28 '17 at 19:46
1

In order to be testable, your time-related code should use a separated class to retrieve time, that later can be mocked. – Xavier Rubio Jansana Dec 28 '17 at 19:47
9

Guys, I experience same with `android.permission.WRITE_EXTERNAL_STORAGE`? – Eugen Martynov Dec 29 '17 at 10:31
Have you declared the permission in the Manifest? – Faux Pas Jan 02 '18 at 15:32
same error while requesting android.permission.WRITE_EXTERNAL_STORAGE – Ewoks May 25 '19 at 22:51

score 0 · Answer 2 · answered Jan 27 '21 at 07:43

I figured out a way to "manipulate" the system time if you use the emulator.

If you set/change the hosts system time before you start the emulator, the emulator will take the hosts time.

This way I could, on my Windows, set the time to my desired time and then start the emulator and execute the tests.

GrantPermissionCallable: Permission: android.permission.SET_TIME cannot be granted

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