Adding unit tests for DeleteMatrixClientInfoUseCase

vector/src/main/java/im/vector/app/core/session/clientinfo/DeleteMatrixClientInfoUseCase.kt

@@ -28,7 +28,6 @@ class DeleteMatrixClientInfoUseCase @Inject constructor(
         private val setMatrixClientInfoUseCase: SetMatrixClientInfoUseCase,
 ) {
 
-    // TODO add unit tests
     suspend fun execute(): Result<Unit> = runCatching {
         Timber.d("deleting recorded client info")
         val session = activeSessionHolder.getActiveSession()
@@ -37,6 +36,6 @@ class DeleteMatrixClientInfoUseCase @Inject constructor(
                 version = "",
                 url = "",
         )
-        setMatrixClientInfoUseCase.execute(session, emptyClientInfo)
+        return setMatrixClientInfoUseCase.execute(session, emptyClientInfo)
     }
 }

vector/src/test/java/im/vector/app/core/session/clientinfo/DeleteMatrixClientInfoUseCaseTest.kt

@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.core.session.clientinfo
+
+import im.vector.app.test.fakes.FakeActiveSessionHolder
+import io.mockk.coEvery
+import io.mockk.coVerify
+import io.mockk.mockk
+import kotlinx.coroutines.test.runTest
+import org.amshove.kluent.shouldBe
+import org.amshove.kluent.shouldBeEqualTo
+import org.junit.Test
+
+class DeleteMatrixClientInfoUseCaseTest {
+
+    private val fakeActiveSessionHolder = FakeActiveSessionHolder()
+    private val fakeSetMatrixClientInfoUseCase = mockk<SetMatrixClientInfoUseCase>()
+
+    private val deleteMatrixClientInfoUseCase = DeleteMatrixClientInfoUseCase(
+            activeSessionHolder = fakeActiveSessionHolder.instance,
+            setMatrixClientInfoUseCase = fakeSetMatrixClientInfoUseCase
+    )
+
+    @Test
+    fun `given current session when calling use case then empty client info is set and result is success`() = runTest {
+        // Given
+        givenSetMatrixClientInfoSucceeds()
+        val expectedClientInfoToBeSet = MatrixClientInfoContent(
+                name = "",
+                version = "",
+                url = "",
+        )
+
+        // When
+        val result = deleteMatrixClientInfoUseCase.execute()
+
+        // Then
+        result.isSuccess shouldBe true
+        coVerify {
+            fakeSetMatrixClientInfoUseCase.execute(
+                    fakeActiveSessionHolder.fakeSession,
+                    expectedClientInfoToBeSet
+            )
+        }
+    }
+
+    @Test
+    fun `given current session and error during the process when calling use case then result is failure`() = runTest {
+        // Given
+        val error = Exception()
+        givenSetMatrixClientInfoFails(error)
+
+        // When
+        val result = deleteMatrixClientInfoUseCase.execute()
+
+        // Then
+        result.isFailure shouldBe true
+        result.exceptionOrNull() shouldBeEqualTo error
+    }
+
+    private fun givenSetMatrixClientInfoSucceeds() {
+        coEvery { fakeSetMatrixClientInfoUseCase.execute(any(), any()) } returns Result.success(Unit)
+    }
+
+    private fun givenSetMatrixClientInfoFails(error: Exception) {
+        coEvery { fakeSetMatrixClientInfoUseCase.execute(any(), any()) } returns Result.failure(error)
+    }
+}