feat: add opencode ai agent option

src-tauri/src/opencode_events_tests.rs

@@ -0,0 +1,63 @@
+use super::*;
+
+#[test]
+fn dispatch_maps_session_reasoning_and_text() {
+    let mut events = Vec::new();
+    let started = serde_json::json!({ "type": "session", "sessionID": "ses_1" });
+    let reasoning = serde_json::json!({ "type": "reasoning", "text": "Checking links" });
+    let text = serde_json::json!({ "type": "message", "text": "Done" });
+
+    for event in [started, reasoning, text] {
+        dispatch_event(&event, &mut |event| events.push(event));
+    }
+
+    assert!(matches!(
+        &events[0],
+        AiAgentStreamEvent::Init { session_id } if session_id == "ses_1"
+    ));
+    assert!(matches!(
+        &events[1],
+        AiAgentStreamEvent::ThinkingDelta { text } if text == "Checking links"
+    ));
+    assert!(matches!(
+        &events[2],
+        AiAgentStreamEvent::TextDelta { text } if text == "Done"
+    ));
+}
+
+#[test]
+fn dispatch_maps_tool_events() {
+    let mut events = Vec::new();
+    let tool_start = serde_json::json!({
+        "type": "tool_use",
+        "id": "tool_1",
+        "name": "read",
+        "input": { "path": "Note.md" }
+    });
+    let tool_done = serde_json::json!({ "type": "tool_result", "id": "tool_1", "output": "ok" });
+
+    dispatch_event(&tool_start, &mut |event| events.push(event));
+    dispatch_event(&tool_done, &mut |event| events.push(event));
+
+    assert!(matches!(
+        &events[0],
+        AiAgentStreamEvent::ToolStart { tool_name, tool_id, input }
+            if tool_name == "read" && tool_id == "tool_1" && input.as_deref() == Some(r#"{"path":"Note.md"}"#)
+    ));
+    assert!(matches!(
+        &events[1],
+        AiAgentStreamEvent::ToolDone { tool_id, output }
+            if tool_id == "tool_1" && output.as_deref() == Some("ok")
+    ));
+}
+
+#[test]
+fn format_error_explains_missing_auth_or_provider_setup() {
+    let message = format_error(
+        "provider auth failed: please login".into(),
+        "exit status: 1".into(),
+    );
+
+    assert!(message.contains("OpenCode CLI is not authenticated"));
+    assert!(message.contains("opencode auth login"));
+}