From e02d7bfd25fa998e984aa670e84975b3d88ae03f Mon Sep 17 00:00:00 2001
From: M57 <41645758+Hy4ri@users.noreply.github.com>
Date: Thu, 9 Jul 2026 22:05:43 +0300
Subject: [PATCH] test(#522): add GatewayViewModel loadStatus tests
 (success/error/exception) (rebase onto main) (#522)

---
 .../ui/gateway/GatewayViewModelTest.kt        | 109 ++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 app/src/test/java/com/m57/hermescontrol/ui/gateway/GatewayViewModelTest.kt

diff --git a/app/src/test/java/com/m57/hermescontrol/ui/gateway/GatewayViewModelTest.kt b/app/src/test/java/com/m57/hermescontrol/ui/gateway/GatewayViewModelTest.kt
new file mode 100644
index 00000000..5c479b59
--- /dev/null
+++ b/app/src/test/java/com/m57/hermescontrol/ui/gateway/GatewayViewModelTest.kt
@@ -0,0 +1,109 @@
+package com.m57.hermescontrol.ui.gateway
+
+import com.m57.hermescontrol.data.model.StatusResponse
+import com.m57.hermescontrol.data.remote.ApiClient
+import com.m57.hermescontrol.data.remote.HermesApiService
+import io.mockk.coEvery
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.mockkObject
+import io.mockk.mockkStatic
+import io.mockk.unmockkAll
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.StandardTestDispatcher
+import kotlinx.coroutines.test.advanceUntilIdle
+import kotlinx.coroutines.test.resetMain
+import kotlinx.coroutines.test.runTest
+import kotlinx.coroutines.test.setMain
+import okhttp3.ResponseBody.Companion.toResponseBody
+import org.junit.After
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertTrue
+import org.junit.Before
+import org.junit.Test
+import retrofit2.Response
+
+@OptIn(ExperimentalCoroutinesApi::class)
+class GatewayViewModelTest {
+    private val testDispatcher = StandardTestDispatcher()
+    private lateinit var mockApi: HermesApiService
+
+    @Before
+    fun setUp() {
+        Dispatchers.setMain(testDispatcher)
+        mockkStatic(Dispatchers::class)
+        every { Dispatchers.IO } returns testDispatcher
+
+        mockApi = mockk()
+        mockkObject(ApiClient)
+        every { ApiClient.hermesApi } returns mockApi
+    }
+
+    @After
+    fun tearDown() {
+        Dispatchers.resetMain()
+        unmockkAll()
+    }
+
+    @Test
+    fun `loadStatus success updates state with status data`() =
+        runTest {
+            val mockResponse = mockk<StatusResponse>()
+            coEvery { mockApi.getStatus() } returns Response.success(mockResponse)
+
+            val viewModel = GatewayViewModel()
+
+            // Before calling, status should be null
+            assertNull(viewModel.uiState.value.status)
+            assertFalse(viewModel.uiState.value.isLoading)
+
+            viewModel.loadStatus()
+
+            // Assert loading state (before coroutine executes)
+            assertTrue(viewModel.uiState.value.isLoading)
+            assertNull(viewModel.uiState.value.errorMessage)
+
+            testDispatcher.scheduler.advanceUntilIdle()
+
+            // Assert final state
+            assertFalse(viewModel.uiState.value.isLoading)
+            assertEquals(mockResponse, viewModel.uiState.value.status)
+            assertNull(viewModel.uiState.value.errorMessage)
+        }
+
+    @Test
+    fun `loadStatus error updates state with error message`() =
+        runTest {
+            coEvery { mockApi.getStatus() } returns Response.error(500, "Server Error".toResponseBody(null))
+
+            val viewModel = GatewayViewModel()
+
+            viewModel.loadStatus()
+            assertTrue(viewModel.uiState.value.isLoading)
+
+            testDispatcher.scheduler.advanceUntilIdle()
+
+            assertFalse(viewModel.uiState.value.isLoading)
+            assertNull(viewModel.uiState.value.status)
+            assertTrue(viewModel.uiState.value.errorMessage?.contains("500") == true)
+        }
+
+    @Test
+    fun `loadStatus network exception updates state with error message`() =
+        runTest {
+            coEvery { mockApi.getStatus() } throws RuntimeException("Network timeout")
+
+            val viewModel = GatewayViewModel()
+
+            viewModel.loadStatus()
+
+            testDispatcher.scheduler.advanceUntilIdle()
+
+            assertFalse(viewModel.uiState.value.isLoading)
+            assertNull(viewModel.uiState.value.status)
+            assertTrue(viewModel.uiState.value.errorMessage?.contains("Network timeout") == true)
+        }
+}