extract test output parsing

Parsing no longer depends on ui widget

pi-test-status/extensions/parsing/__tests__/vitest-output.test.ts

@@ -0,0 +1,60 @@
+import { describe, it, expect } from "vitest";
+import { parseTestOutput } from "../typescript-command-output";
+
+describe("parseTestOutput", () => {
+  it("parses a passing vitest run", () => {
+    const output = `
+ RAN  v3.2.6 /path
+
+ ✓ src/greet.test.ts (1 test) 1ms
+
+ Test Files  1 passed (1)
+      Tests  1 passed (1)
+   Start at  11:12:54
+   Duration  308ms
+`;
+
+    const result = parseTestOutput(output);
+
+    expect(result.status).toBe("Success");
+    expect(result.summary).toContain("1 passed");
+  });
+
+  it("parses a failing vitest run", () => {
+    const output = `
+ RAN  v3.2.6 /path
+
+ ✓ src/greet.test.ts (1 test) 1ms
+ ✗ src/foo.test.ts (1 test) 2ms
+
+ Test Files  1 failed (1)
+      Tests  1 failed (1)
+   Start at  11:15:00
+   Duration  400ms
+`;
+
+    const result = parseTestOutput(output);
+
+    expect(result.status).toBe("Error");
+    expect(result.summary).toContain("1 failed");
+  });
+
+  it("returns Error and a fallback summary for unrecognised output", () => {
+    const result = parseTestOutput("some random output");
+
+    expect(result.status).toBe("Error");
+    expect(result.summary).toBe("Tests failed");
+  });
+
+  it("returns Success with a fallback summary when passed but no detail line", () => {
+    const output = `
+ ✓ src/greet.test.ts (1 test) 1ms
+ Tests  1 passed (242ms)
+`;
+
+    const result = parseTestOutput(output);
+
+    expect(result.status).toBe("Success");
+    expect(result.summary).toBe("All tests passed");
+  });
+});

pi-test-status/extensions/parsing/typescript-command-output.ts

@@ -1,3 +1,25 @@
+export type TestResult =
+  | { status: "Success"; summary: string }
+  | { status: "Error"; summary: string };
+
 export const isTestCommand = (command: string) => {
-    return command.includes("npm test") || command.includes("vitest")
-}
+  return command.includes("npm test") || command.includes("vitest");
+};
+
+export function parseTestOutput(output: string): TestResult {
+  const testsPassed =
+    /Tests\s+.+passed/.test(output) && !/Tests\s+.+failed/.test(output);
+  const testsFailed = /Tests\s+.+failed/.test(output);
+
+  if (testsPassed && !testsFailed) {
+    const line = output
+      .split("\n")
+      .find((l) => /Test Files\s+.+passed/.test(l));
+    return { status: "Success", summary: line?.trim() ?? "All tests passed" };
+  }
+
+  const line = output
+    .split("\n")
+    .find((l) => /Tests\s+.+failed/.test(l));
+  return { status: "Error", summary: line?.trim() ?? "Tests failed" };
+}