fix(minimax): strip tool invocation XML from assistant text

src/agents/pi-embedded-utils.test.ts

@@ -0,0 +1,162 @@
+import { describe, expect, it } from "vitest";
+import { extractAssistantText } from "./pi-embedded-utils.js";
+import type { AssistantMessage } from "@mariozechner/pi-ai";
+
+describe("extractAssistantText", () => {
+  it("strips Minimax tool invocation XML from text", () => {
+    const msg: AssistantMessage = {
+      role: "assistant",
+      content: [
+        {
+          type: "text",
+          text: `<invoke name="Bash">
+<parameter name="command">netstat -tlnp | grep 18789</parameter>
+</invoke>
+</minimax:tool_call>`,
+        },
+      ],
+      timestamp: Date.now(),
+    };
+
+    const result = extractAssistantText(msg);
+    expect(result).toBe("");
+  });
+
+  it("strips multiple tool invocations", () => {
+    const msg: AssistantMessage = {
+      role: "assistant",
+      content: [
+        {
+          type: "text",
+          text: `Let me check that.<invoke name="Read">
+<parameter name="path">/home/admin/test.txt</parameter>
+</invoke>
+</minimax:tool_call>`,
+        },
+      ],
+      timestamp: Date.now(),
+    };
+
+    const result = extractAssistantText(msg);
+    expect(result).toBe("Let me check that.");
+  });
+
+  it("preserves normal text without tool invocations", () => {
+    const msg: AssistantMessage = {
+      role: "assistant",
+      content: [
+        {
+          type: "text",
+          text: "This is a normal response without any tool calls.",
+        },
+      ],
+      timestamp: Date.now(),
+    };
+
+    const result = extractAssistantText(msg);
+    expect(result).toBe("This is a normal response without any tool calls.");
+  });
+
+  it("strips tool XML mixed with regular content", () => {
+    const msg: AssistantMessage = {
+      role: "assistant",
+      content: [
+        {
+          type: "text",
+          text: `I'll help you with that.<invoke name="Bash">
+<parameter name="command">ls -la</parameter>
+</invoke>
+</minimax:tool_call>Here are the results.`,
+        },
+      ],
+      timestamp: Date.now(),
+    };
+
+    const result = extractAssistantText(msg);
+    expect(result).toBe("I'll help you with that.\nHere are the results.");
+  });
+
+  it("handles multiple invoke blocks in one message", () => {
+    const msg: AssistantMessage = {
+      role: "assistant",
+      content: [
+        {
+          type: "text",
+          text: `First check.<invoke name="Read">
+<parameter name="path">file1.txt</parameter>
+</invoke>
+</minimax:tool_call>Second check.<invoke name="Bash">
+<parameter name="command">pwd</parameter>
+</invoke>
+</minimax:tool_call>Done.`,
+        },
+      ],
+      timestamp: Date.now(),
+    };
+
+    const result = extractAssistantText(msg);
+    expect(result).toBe("First check.\nSecond check.\nDone.");
+  });
+
+  it("handles stray closing tags without opening tags", () => {
+    const msg: AssistantMessage = {
+      role: "assistant",
+      content: [
+        {
+          type: "text",
+          text: "Some text here.</minimax:tool_call>More text.",
+        },
+      ],
+      timestamp: Date.now(),
+    };
+
+    const result = extractAssistantText(msg);
+    expect(result).toBe("Some text here.More text.");
+  });
+
+  it("returns empty string when message is only tool invocations", () => {
+    const msg: AssistantMessage = {
+      role: "assistant",
+      content: [
+        {
+          type: "text",
+          text: `<invoke name="Bash">
+<parameter name="command">test</parameter>
+</invoke>
+</minimax:tool_call>`,
+        },
+      ],
+      timestamp: Date.now(),
+    };
+
+    const result = extractAssistantText(msg);
+    expect(result).toBe("");
+  });
+
+  it("handles multiple text blocks", () => {
+    const msg: AssistantMessage = {
+      role: "assistant",
+      content: [
+        {
+          type: "text",
+          text: "First block.",
+        },
+        {
+          type: "text",
+          text: `<invoke name="Bash">
+<parameter name="command">ls</parameter>
+</invoke>
+</minimax:tool_call>`,
+        },
+        {
+          type: "text",
+          text: "Third block.",
+        },
+      ],
+      timestamp: Date.now(),
+    };
+
+    const result = extractAssistantText(msg);
+    expect(result).toBe("First block.\nThird block.");
+  });
+});