[Add edge case tests for DashboardSessionTokenRefresher] (#694)

* Add edge case testing for DashboardSessionTokenRefresher

Added tests to `DashboardSessionTokenRefresherTest.kt` to cover
cases where `refresh()` catches exceptions or where `fetch()`
returns null. Included a happy-path test for `refresh()`.

* Add edge case testing for DashboardSessionTokenRefresher

Added tests to `DashboardSessionTokenRefresherTest.kt` to cover
cases where `refresh()` catches exceptions or where `fetch()`
returns null. Included a happy-path test for `refresh()`.

app/src/test/java/com/m57/hermescontrol/data/remote/DashboardSessionTokenRefresherTest.kt

@@ -1,5 +1,10 @@
 package com.m57.hermescontrol.data.remote
 
+import com.m57.hermescontrol.data.local.AuthManager
+import io.mockk.every
+import io.mockk.mockkObject
+import io.mockk.unmockkAll
+import io.mockk.verify
 import okhttp3.OkHttpClient
 import okhttp3.mockwebserver.MockResponse
 import okhttp3.mockwebserver.MockWebServer
@@ -16,11 +21,14 @@ class DashboardSessionTokenRefresherTest {
     fun setUp() {
         server = MockWebServer()
         server.start()
+        mockkObject(OkHttpProvider)
+        every { OkHttpProvider.probe } returns OkHttpClient()
     }
 
     @AfterEach
     fun tearDown() {
         server.shutdown()
+        unmockkAll()
     }
 
     @Test
@@ -67,4 +75,45 @@ class DashboardSessionTokenRefresherTest {
 
         assertNull(token)
     }
+
+    @Test
+    fun refreshUpdatesAuthManagerOnSuccess() {
+        mockkObject(AuthManager)
+        every { AuthManager.baseUrl() } returns server.url("/").toString()
+        every { AuthManager.setToken(any()) } returns Unit
+
+        server.enqueue(
+            MockResponse()
+                .setResponseCode(200)
+                .setBody("""<script>window.__HERMES_SESSION_TOKEN__ = "mocked-token";</script>"""),
+        )
+
+        val token = DashboardSessionTokenRefresher.refresh()
+
+        assertEquals("mocked-token", token)
+        verify { AuthManager.setToken("mocked-token") }
+    }
+
+    @Test
+    fun refreshReturnsNullOnException() {
+        mockkObject(AuthManager)
+        every { AuthManager.baseUrl() } throws RuntimeException("Network Error")
+
+        val token = DashboardSessionTokenRefresher.refresh()
+
+        assertNull(token)
+    }
+
+    @Test
+    fun refreshReturnsNullWhenFetchReturnsNull() {
+        mockkObject(AuthManager)
+        every { AuthManager.baseUrl() } returns server.url("/").toString()
+        // No token returned from fetch
+        server.enqueue(MockResponse().setResponseCode(200).setBody("<html></html>"))
+
+        val token = DashboardSessionTokenRefresher.refresh()
+
+        assertNull(token)
+        verify(exactly = 0) { AuthManager.setToken(any()) }
+    }
 }