feat: add source filter chips to history screen (#1425)

app/src/test/java/com/m57/hermescontrol/ui/sessions/SessionSourceFilterTest.kt

@@ -0,0 +1,75 @@
+package com.m57.hermescontrol.ui.sessions
+
+import com.m57.hermescontrol.data.model.SessionInfo
+import com.m57.hermescontrol.data.model.SessionSearchResult
+import com.m57.hermescontrol.ui.sessions.components.sourceLabel
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Test
+
+class SessionSourceFilterTest {
+    private val rows =
+        listOf(
+            SessionInfo("a", source = "cli"),
+            SessionInfo("b", source = "CLI"),
+            SessionInfo("c", source = "desktop"),
+            SessionInfo("d", source = "api_server"),
+            SessionInfo("e", source = "desktop", hidden = true),
+            SessionInfo("f", source = null),
+        )
+
+    @Test
+    fun availableSources_onlyLoadedVisibleSources_orderedByCountThenName() {
+        val state = SessionsUiState(sessions = rows)
+        assertEquals(listOf("cli", "api_server", "desktop"), state.availableSources)
+    }
+
+    @Test
+    fun availableSources_includesHiddenOnlyWhenShown() {
+        val onlyHidden = listOf(SessionInfo("x", source = "tui", hidden = true), SessionInfo("y", source = "cli"))
+        assertEquals(listOf("cli"), SessionsUiState(sessions = onlyHidden).availableSources)
+        assertEquals(
+            listOf("cli", "tui"),
+            SessionsUiState(sessions = onlyHidden, showHidden = true).availableSources,
+        )
+    }
+
+    @Test
+    fun filter_isCaseInsensitiveAndNarrowsList() {
+        val state = SessionsUiState(sessions = rows, sourceFilter = "cli")
+        assertEquals(listOf("a", "b"), state.displaySessions.map { it.id })
+    }
+
+    @Test
+    fun staleFilter_fallsBackToAll() {
+        val state = SessionsUiState(sessions = rows, sourceFilter = "telegram")
+        assertNull(state.activeSourceFilter)
+        assertEquals(5, state.displaySessions.size)
+    }
+
+    @Test
+    fun searchMode_usesSearchResultSources() {
+        val state =
+            SessionsUiState(
+                searchQuery = "q",
+                sessions = rows,
+                searchResults =
+                    listOf(
+                        SessionSearchResult("s1", source = "telegram"),
+                        SessionSearchResult("s2", source = "cli"),
+                    ),
+                sourceFilter = "telegram",
+            )
+        assertEquals(listOf("cli", "telegram"), state.availableSources)
+        assertEquals(listOf("s1"), displayedSessions(state).map { it.session.id })
+    }
+
+    @Test
+    fun sourceLabel_mapsKnownAndTitleCasesUnknown() {
+        assertEquals("API", sourceLabel("api_server"))
+        assertEquals("Desktop", sourceLabel("desktop"))
+        assertEquals("TUI", sourceLabel("tui"))
+        assertEquals("Whatsapp cloud", sourceLabel("whatsapp_cloud"))
+        assertEquals("Unknown", sourceLabel(null))
+    }
+}