StateRestorationTester
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android
class StateRestorationTester
Helps to test the state restoration for your Composable component.
Instead of calling ComposeContentTestRule.setContent you need to use setContent on this object, then change your state so there is some change to be restored, then execute emulateSavedInstanceStateRestore and assert your state is restored properly.
Note that this tests only the restoration of the local state of the composable you passed to setContent and useful for testing androidx.compose.runtime.saveable.rememberSaveable integration. It is not testing the integration with any other life cycles or Activity callbacks.
Summary
Public constructors |
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StateRestorationTester(composeTestRule: ComposeContentTestRule) |
android
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Public functions |
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Unit |
Saves all the state stored via savedInstanceState or rememberSaveable, disposes current composition, and composes again the content passed to |
android
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Unit |
setContent(composable: @Composable () -> Unit)This functions is a direct replacement for |
android
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Public constructors
Public functions
emulateSavedInstanceStateRestore
fun emulateSavedInstanceStateRestore(): Unit
Saves all the state stored via savedInstanceState or rememberSaveable, disposes current composition, and composes again the content passed to setContent. Allows to test how your component behaves when the state restoration is happening. Note that the state stored via regular state() or remember() will be lost.
setContent
fun setContent(composable: @Composable () -> Unit): Unit
This functions is a direct replacement for ComposeContentTestRule.setContent if you are going to use emulateSavedInstanceStateRestore in the test.
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setContent |