Agent package + coding agent WIP, refactored web-ui prompts

packages/agent/test/agent.test.ts

@@ -0,0 +1,140 @@
+import { getModel } from "@mariozechner/pi-ai";
+import { describe, expect, it } from "vitest";
+import { Agent, ProviderTransport } from "../src/index.js";
+
+describe("Agent", () => {
+	it("should create an agent instance with default state", () => {
+		const agent = new Agent({
+			transport: new ProviderTransport(),
+		});
+
+		expect(agent.state).toBeDefined();
+		expect(agent.state.systemPrompt).toBe("");
+		expect(agent.state.model).toBeDefined();
+		expect(agent.state.thinkingLevel).toBe("off");
+		expect(agent.state.tools).toEqual([]);
+		expect(agent.state.messages).toEqual([]);
+		expect(agent.state.isStreaming).toBe(false);
+		expect(agent.state.streamMessage).toBe(null);
+		expect(agent.state.pendingToolCalls).toEqual(new Set());
+		expect(agent.state.error).toBeUndefined();
+	});
+
+	it("should create an agent instance with custom initial state", () => {
+		const customModel = getModel("openai", "gpt-4o-mini");
+		const agent = new Agent({
+			transport: new ProviderTransport(),
+			initialState: {
+				systemPrompt: "You are a helpful assistant.",
+				model: customModel,
+				thinkingLevel: "low",
+			},
+		});
+
+		expect(agent.state.systemPrompt).toBe("You are a helpful assistant.");
+		expect(agent.state.model).toBe(customModel);
+		expect(agent.state.thinkingLevel).toBe("low");
+	});
+
+	it("should subscribe to state updates", () => {
+		const agent = new Agent({
+			transport: new ProviderTransport(),
+		});
+
+		let updateCount = 0;
+		const unsubscribe = agent.subscribe((event) => {
+			if (event.type === "state-update") {
+				updateCount++;
+			}
+		});
+
+		// Initial state update on subscribe
+		expect(updateCount).toBe(1);
+
+		// Update state
+		agent.setSystemPrompt("Test prompt");
+		expect(updateCount).toBe(2);
+		expect(agent.state.systemPrompt).toBe("Test prompt");
+
+		// Unsubscribe should work
+		unsubscribe();
+		agent.setSystemPrompt("Another prompt");
+		expect(updateCount).toBe(2); // Should not increase
+	});
+
+	it("should update state with mutators", () => {
+		const agent = new Agent({
+			transport: new ProviderTransport(),
+		});
+
+		// Test setSystemPrompt
+		agent.setSystemPrompt("Custom prompt");
+		expect(agent.state.systemPrompt).toBe("Custom prompt");
+
+		// Test setModel
+		const newModel = getModel("google", "gemini-2.5-flash");
+		agent.setModel(newModel);
+		expect(agent.state.model).toBe(newModel);
+
+		// Test setThinkingLevel
+		agent.setThinkingLevel("high");
+		expect(agent.state.thinkingLevel).toBe("high");
+
+		// Test setTools
+		const tools = [{ name: "test", description: "test tool" } as any];
+		agent.setTools(tools);
+		expect(agent.state.tools).toBe(tools);
+
+		// Test replaceMessages
+		const messages = [{ role: "user" as const, content: "Hello" }];
+		agent.replaceMessages(messages);
+		expect(agent.state.messages).toEqual(messages);
+		expect(agent.state.messages).not.toBe(messages); // Should be a copy
+
+		// Test appendMessage
+		const newMessage = { role: "assistant" as const, content: [{ type: "text" as const, text: "Hi" }] };
+		agent.appendMessage(newMessage as any);
+		expect(agent.state.messages).toHaveLength(2);
+		expect(agent.state.messages[1]).toBe(newMessage);
+
+		// Test clearMessages
+		agent.clearMessages();
+		expect(agent.state.messages).toEqual([]);
+	});
+
+	it("should support message queueing", async () => {
+		const agent = new Agent({
+			transport: new ProviderTransport(),
+		});
+
+		const message = { role: "user" as const, content: "Queued message" };
+		await agent.queueMessage(message);
+
+		// The message is queued but not yet in state.messages
+		expect(agent.state.messages).not.toContainEqual(message);
+	});
+
+	it("should handle abort controller", () => {
+		const agent = new Agent({
+			transport: new ProviderTransport(),
+		});
+
+		// Should not throw even if nothing is running
+		expect(() => agent.abort()).not.toThrow();
+	});
+});
+
+describe("ProviderTransport", () => {
+	it("should create a provider transport instance", () => {
+		const transport = new ProviderTransport();
+		expect(transport).toBeDefined();
+	});
+
+	it("should create a provider transport with options", () => {
+		const transport = new ProviderTransport({
+			getApiKey: async (provider) => `test-key-${provider}`,
+			corsProxyUrl: "https://proxy.example.com",
+		});
+		expect(transport).toBeDefined();
+	});
+});