1 files changed, 147 insertions, 0 deletions
diff --git a/packages/cli/src/render.test.ts b/packages/cli/src/render.test.ts
new file mode 100644
index 0000000..bfdb791
--- /dev/null
+++ b/packages/cli/src/render.test.ts
@@ -0,0 +1,147 @@
+import type { AgentEvent } from "@dispatch/transport-contract";
+import { describe, expect, it } from "vitest";
+import { renderEvent } from "./render.js";
+
+describe("renderEvent", () => {
+	const opts = { showReasoning: false };
+	const optsReasoning = { showReasoning: true };
+
+	it("renders text-delta as stdout", () => {
+		const e: AgentEvent = {
+			type: "text-delta",
+			conversationId: "c",
+			turnId: "t",
+			delta: "hello",
+		};
+		expect(renderEvent(e, opts)).toEqual({ stdout: "hello" });
+	});
+
+	it("hides reasoning-delta by default", () => {
+		const e: AgentEvent = {
+			type: "reasoning-delta",
+			conversationId: "c",
+			turnId: "t",
+			delta: "thinking...",
+		};
+		expect(renderEvent(e, opts)).toBeUndefined();
+	});
+
+	it("shows reasoning-delta when showReasoning is true", () => {
+		const e: AgentEvent = {
+			type: "reasoning-delta",
+			conversationId: "c",
+			turnId: "t",
+			delta: "thinking...",
+		};
+		expect(renderEvent(e, optsReasoning)).toEqual({ stdout: "thinking..." });
+	});
+
+	it("renders tool-call with name and JSON input", () => {
+		const e: AgentEvent = {
+			type: "tool-call",
+			conversationId: "c",
+			turnId: "t",
+			toolCallId: "tc1",
+			toolName: "read_file",
+			input: { path: "/foo" },
+		};
+		const result = renderEvent(e, opts);
+		expect(result?.stdout).toContain("[tool] read_file");
+		expect(result?.stdout).toContain('"/foo"');
+	});
+
+	it("renders tool-output data as stdout", () => {
+		const e: AgentEvent = {
+			type: "tool-output",
+			conversationId: "c",
+			turnId: "t",
+			toolCallId: "tc1",
+			data: "some output",
+			stream: "stdout",
+		};
+		expect(renderEvent(e, opts)).toEqual({ stdout: "some output" });
+	});
+
+	it("renders tool-result without error", () => {
+		const e: AgentEvent = {
+			type: "tool-result",
+			conversationId: "c",
+			turnId: "t",
+			toolCallId: "tc1",
+			toolName: "read_file",
+			content: "file contents",
+			isError: false,
+		};
+		expect(renderEvent(e, opts)).toEqual({
+			stdout: "[tool:read_file] file contents\n",
+		});
+	});
+
+	it("renders tool-result with error flag", () => {
+		const e: AgentEvent = {
+			type: "tool-result",
+			conversationId: "c",
+			turnId: "t",
+			toolCallId: "tc1",
+			toolName: "read_file",
+			content: "not found",
+			isError: true,
+		};
+		expect(renderEvent(e, opts)).toEqual({
+			stdout: "[tool:read_file] ERROR not found\n",
+		});
+	});
+
+	it("renders usage event", () => {
+		const e: AgentEvent = {
+			type: "usage",
+			conversationId: "c",
+			turnId: "t",
+			usage: { inputTokens: 100, outputTokens: 50 },
+		};
+		expect(renderEvent(e, opts)).toEqual({
+			stdout: "\n[usage] in=100 out=50\n",
+		});
+	});
+
+	it("renders error event to stderr", () => {
+		const e: AgentEvent = {
+			type: "error",
+			conversationId: "c",
+			turnId: "t",
+			message: "something went wrong",
+		};
+		expect(renderEvent(e, opts)).toEqual({
+			stderr: "[error] something went wrong\n",
+		});
+	});
+
+	it("returns undefined for status", () => {
+		const e: AgentEvent = {
+			type: "status",
+			conversationId: "c",
+			status: "running",
+		};
+		expect(renderEvent(e, opts)).toBeUndefined();
+	});
+
+	it("returns undefined for turn-start", () => {
+		const e: AgentEvent = { type: "turn-start", conversationId: "c", turnId: "t" };
+		expect(renderEvent(e, opts)).toBeUndefined();
+	});
+
+	it("returns undefined for turn-sealed", () => {
+		const e: AgentEvent = { type: "turn-sealed", conversationId: "c", turnId: "t" };
+		expect(renderEvent(e, opts)).toBeUndefined();
+	});
+
+	it("returns undefined for done", () => {
+		const e: AgentEvent = {
+			type: "done",
+			conversationId: "c",
+			turnId: "t",
+			reason: "completed",
+		};
+		expect(renderEvent(e, opts)).toBeUndefined();
+	});
+});