[Init] Initial commit - NetMesh terminal manager

infrastructure/ai/streamStateErrors.test.ts

@@ -0,0 +1,39 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { isSdkStreamStateError } from "./shared/streamStateErrors";
+
+test("isSdkStreamStateError matches the reasoning-part orphan-delta error", () => {
+  assert.equal(isSdkStreamStateError("reasoning part 0 not found"), true);
+  assert.equal(isSdkStreamStateError("reasoning part abc-123 not found"), true);
+  assert.equal(isSdkStreamStateError("Reasoning Part 0 Not Found"), true);
+  assert.equal(isSdkStreamStateError("  reasoning part 7 not found  "), true);
+});
+
+test("isSdkStreamStateError matches the text-part orphan-delta error", () => {
+  assert.equal(isSdkStreamStateError("text part 0 not found"), true);
+  assert.equal(isSdkStreamStateError("text part X not found"), true);
+});
+
+test("isSdkStreamStateError accepts the error wrapped in an Error or `{ message }`", () => {
+  assert.equal(isSdkStreamStateError(new Error("reasoning part 0 not found")), true);
+  assert.equal(isSdkStreamStateError({ message: "reasoning part 0 not found" }), true);
+});
+
+test("isSdkStreamStateError ignores unrelated error strings", () => {
+  assert.equal(isSdkStreamStateError("Network error"), false);
+  assert.equal(
+    isSdkStreamStateError("400 messages.13: tool_use ids were found without tool_result blocks"),
+    false,
+  );
+  assert.equal(isSdkStreamStateError("reasoning part not found"), false, "missing the id segment shouldn't match");
+  assert.equal(isSdkStreamStateError("a reasoning part 0 not found"), false, "leading text shouldn't match");
+});
+
+test("isSdkStreamStateError handles non-error inputs without throwing", () => {
+  assert.equal(isSdkStreamStateError(undefined), false);
+  assert.equal(isSdkStreamStateError(null), false);
+  assert.equal(isSdkStreamStateError(42), false);
+  assert.equal(isSdkStreamStateError({}), false);
+  assert.equal(isSdkStreamStateError([]), false);
+});