Added unit tests for PhoneNumberPreferenceController visibility

The tests check whether the item is available based on the result of
the SubscriptionUtil.isSimHardwareVisible() method, which is the one
allowing to check the value of the config_show_sim_info boolean flag
on non-test runtime.

Bug: 392808943
Flag: EXEMPT test only
Test: atest PhoneNumberPreferenceControllerTest

Change-Id: I2d1361ecef8a9c1083b4fd6fd4462c7815574827

tests/spa_unit/src/com/android/settings/deviceinfo/PhoneNumberPreferenceControllerTest.kt

@@ -25,20 +25,27 @@ import androidx.preference.PreferenceCategory
 import androidx.preference.PreferenceManager
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
+import com.android.dx.mockito.inline.extended.ExtendedMockito
 import com.android.settings.R
+import com.android.settings.core.BasePreferenceController
+import com.android.settings.network.SubscriptionUtil
 import com.google.common.truth.Truth.assertThat
+import org.junit.After
 import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
+import org.mockito.MockitoSession
 import org.mockito.kotlin.any
 import org.mockito.kotlin.doReturn
 import org.mockito.kotlin.mock
 import org.mockito.kotlin.spy
 import org.mockito.kotlin.verify
 import org.mockito.kotlin.whenever
+import org.mockito.quality.Strictness
 
 @RunWith(AndroidJUnit4::class)
 class PhoneNumberPreferenceControllerTest {
+    private lateinit var mockSession: MockitoSession
 
     private val mockTelephonyManager = mock<TelephonyManager>()
     private val mockSubscriptionManager = mock<SubscriptionManager>()
@@ -61,6 +68,15 @@ class PhoneNumberPreferenceControllerTest {
 
     @Before
     fun setup() {
+        mockSession =
+            ExtendedMockito.mockitoSession()
+                .mockStatic(SubscriptionUtil::class.java)
+                .strictness(Strictness.LENIENT)
+                .startMocking()
+
+        // By default, available
+        whenever(SubscriptionUtil.isSimHardwareVisible(context)).thenReturn(true)
+
         preference.setKey(controller.preferenceKey)
         preference.isVisible = true
         preferenceScreen.addPreference(preference)
@@ -70,6 +86,11 @@ class PhoneNumberPreferenceControllerTest {
         doReturn(secondPreference).whenever(controller).createNewPreference(context)
     }
 
+    @After
+    fun teardown() {
+        mockSession.finishMocking()
+    }
+
     @Test
     fun displayPreference_multiSim_shouldAddSecondPreference() {
         whenever(mockTelephonyManager.phoneCount).thenReturn(2)
@@ -132,4 +153,19 @@ class PhoneNumberPreferenceControllerTest {
 
         verify(preference).summary = context.getString(R.string.device_info_not_available)
     }
+
+    @Test
+    fun getAvailabilityStatus_simHardwareVisible_displayed() {
+        // Use defaults from setup()
+        val availabilityStatus = controller.availabilityStatus
+        assertThat(availabilityStatus).isEqualTo(BasePreferenceController.AVAILABLE)
+    }
+
+    @Test
+    fun getAvailabilityStatus_notSimHardwareVisible_notDisplayed() {
+        whenever(SubscriptionUtil.isSimHardwareVisible(context)).thenReturn(false)
+
+        val availabilityStatus = controller.availabilityStatus
+        assertThat(availabilityStatus).isEqualTo(BasePreferenceController.UNSUPPORTED_ON_DEVICE)
+    }
 }