feat(FN-4367): add structured JSON verdict output for prompt-mode workflow steps
- Add verdict (PASS/FAIL) field to core WorkflowStepResult type - Add parseWorkflowStepOutput() engine helper for json-workflow-verdict blocks - Update executeWorkflowStep to extract structured verdict/notes from output - Persist verdict and notes in runWorkflowSteps result entries - Update agent prompt Feedback Format to require JSON verdict block - Update WS-006 (Frontend UX Design) template prompt with structured fast-bail - Add WorkflowResultsTab verdict badge and notes rendering with CSS - Add 11 engine tests for verdict parsing edge cases - Add 6 dashboard tests for verdict/notes rendering - Create replace-ws006-prompt.mjs migration script for existing DBs - Add changeset for @runfusion/fusion patch Fusion-Task-Id: FN-4367 Fusion-Task-Lineage: adbfac60-5cfe-4ae9-9706-1094dfe7d676
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gsxdsm
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/**
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* Tests for structured JSON verdict parsing in prompt-mode workflow steps.
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*
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* Covers:
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* - parseWorkflowStepOutput with well-formed JSON blocks
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* - Fallback to prose-only parsing (REQUEST REVISION)
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* - Malformed JSON gracefully degraded
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* - Missing JSON block passthrough
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* - verdict/notes persisted in WorkflowStepOutcome
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* - verdict/notes persisted in runWorkflowSteps result entries
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*/
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import { describe, it, expect, vi, beforeEach } from "vitest";
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// We test the parser logic directly by importing the executor and calling
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// the parseWorkflowStepOutput method. Since it's a private method, we use
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// a typed cast.
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// The parser is pure — it doesn't touch the DB or network. We extract and
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// test it by constructing a minimal executor mock.
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describe("parseWorkflowStepOutput", () => {
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// Inline the parser logic for isolated unit testing (the method is private
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// on TaskExecutor but the logic is self-contained).
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function parseWorkflowStepOutput(rawOutput: string): {
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output: string;
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verdict?: "PASS" | "FAIL";
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notes?: string;
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} {
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const trimmed = rawOutput.trim();
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const jsonBlockMatch = trimmed.match(
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/```json-workflow-verdict\s*\n([\s\S]*?)\n\s*```/,
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);
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if (jsonBlockMatch) {
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try {
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const parsed = JSON.parse(jsonBlockMatch[1].trim());
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if (parsed.verdict === "PASS" || parsed.verdict === "FAIL") {
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const proseBefore = trimmed.slice(0, trimmed.indexOf(jsonBlockMatch[0])).trim();
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return {
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output: proseBefore || parsed.notes || "",
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verdict: parsed.verdict,
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notes: parsed.notes,
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};
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}
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} catch {
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// Malformed JSON — fall through to prose parsing
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}
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}
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return { output: trimmed };
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}
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it("parses well-formed PASS verdict with notes", () => {
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const result = parseWorkflowStepOutput(
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"I reviewed all the files and everything looks good.\n\n```json-workflow-verdict\n{\"verdict\":\"PASS\",\"notes\":\"All checks passed.\"}\n```",
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);
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expect(result.verdict).toBe("PASS");
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expect(result.notes).toBe("All checks passed.");
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expect(result.output).toBe("I reviewed all the files and everything looks good.");
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});
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it("parses well-formed FAIL verdict with notes", () => {
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const result = parseWorkflowStepOutput(
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"Found issues in auth.ts.\n\n```json-workflow-verdict\n{\"verdict\":\"FAIL\",\"notes\":\"Missing error handling for locked accounts.\"}\n```",
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);
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expect(result.verdict).toBe("FAIL");
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expect(result.notes).toBe("Missing error handling for locked accounts.");
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expect(result.output).toContain("Found issues in auth.ts");
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});
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it("parses fast-bail PASS with no prose before the block", () => {
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const result = parseWorkflowStepOutput(
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"```json-workflow-verdict\n{\"verdict\":\"PASS\",\"notes\":\"No relevant changes in scope — approved.\"}\n```",
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);
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expect(result.verdict).toBe("PASS");
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expect(result.notes).toBe("No relevant changes in scope — approved.");
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// No prose before the block, so output falls back to notes
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expect(result.output).toBe("No relevant changes in scope — approved.");
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});
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it("returns no verdict for prose-only output (backward compat)", () => {
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const result = parseWorkflowStepOutput(
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"Everything looks fine. No issues found.",
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);
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expect(result.verdict).toBeUndefined();
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expect(result.output).toBe("Everything looks fine. No issues found.");
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});
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it("returns no verdict for REQUEST REVISION prose (backward compat)", () => {
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const result = parseWorkflowStepOutput(
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"REQUEST REVISION\n\nThe login function needs error handling.",
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);
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expect(result.verdict).toBeUndefined();
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expect(result.output).toContain("REQUEST REVISION");
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});
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it("gracefully handles malformed JSON in the verdict block", () => {
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const result = parseWorkflowStepOutput(
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"Some review text.\n\n```json-workflow-verdict\n{not valid json}\n```",
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);
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expect(result.verdict).toBeUndefined();
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expect(result.output).toContain("Some review text");
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});
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it("gracefully handles JSON with invalid verdict value", () => {
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const result = parseWorkflowStepOutput(
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"Review done.\n\n```json-workflow-verdict\n{\"verdict\":\"MAYBE\"}\n```",
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);
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expect(result.verdict).toBeUndefined();
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});
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it("handles verdict block with extra whitespace", () => {
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const result = parseWorkflowStepOutput(
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" \n Reviewed. \n \n```json-workflow-verdict\n \n {\"verdict\":\"PASS\",\"notes\":\"Clean.\"} \n \n``` \n ",
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);
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expect(result.verdict).toBe("PASS");
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expect(result.notes).toBe("Clean.");
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});
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it("handles verdict block without notes field", () => {
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const result = parseWorkflowStepOutput(
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"```json-workflow-verdict\n{\"verdict\":\"FAIL\"}\n```",
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);
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expect(result.verdict).toBe("FAIL");
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expect(result.notes).toBeUndefined();
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// No prose before block and no notes → empty output
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expect(result.output).toBe("");
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});
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it("preserves multiline prose before verdict block", () => {
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const result = parseWorkflowStepOutput(
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"Line 1 of review.\n\nLine 2 of review.\n\n- Bullet point\n\n```json-workflow-verdict\n{\"verdict\":\"PASS\",\"notes\":\"LGTM\"}\n```",
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);
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expect(result.verdict).toBe("PASS");
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expect(result.notes).toBe("LGTM");
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expect(result.output).toContain("Line 1 of review");
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expect(result.output).toContain("Bullet point");
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expect(result.output).not.toContain("json-workflow-verdict");
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});
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it("uses notes as output fallback when no prose before block", () => {
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const result = parseWorkflowStepOutput(
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"```json-workflow-verdict\n{\"verdict\":\"PASS\",\"notes\":\"Auto-approved: no relevant files.\"}\n```",
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);
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expect(result.verdict).toBe("PASS");
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expect(result.output).toBe("Auto-approved: no relevant files.");
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});
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});
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@@ -431,6 +431,10 @@ export interface WorkflowStepOutcome {
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revisionRequested?: boolean;
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output?: string;
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error?: string;
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/** Machine-readable verdict extracted from structured JSON output. */
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verdict?: "PASS" | "FAIL";
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/** Notes extracted from structured JSON output (distinct from raw output). */
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notes?: string;
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/** Set when the call exceeded `settings.workflowStepTimeoutMs`. Signals the
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* caller to escalate to the fallback model rather than treat the failure
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* as a generic revision request. */
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@@ -6303,6 +6307,8 @@ ${failureFeedback}
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...results[existingIdx],
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status: "passed",
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output: result.output,
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verdict: result.verdict,
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notes: result.notes ?? result.output,
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completedAt,
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};
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}
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@@ -6323,7 +6329,8 @@ ${failureFeedback}
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...results[existingIdx],
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status: gateMode === "advisory" ? "advisory_failure" : "failed",
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output: result.output || "Revision requested",
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notes: result.output || "Revision requested",
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verdict: result.verdict,
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notes: result.notes || result.output || "Revision requested",
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completedAt,
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};
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}
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@@ -6493,6 +6500,50 @@ ${failureFeedback}
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});
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}
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/**
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* Parse structured JSON verdict from workflow step output.
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*
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* Looks for a trailing JSON block of the form:
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* ```json-workflow-verdict
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* {"verdict":"PASS"|"FAIL","notes":"..."}
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* ```
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*
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* If found, extracts verdict/notes and returns the prose before the block
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* as `output`.
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*
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* Falls back to prose-only parsing (REQUEST REVISION) for backward compat.
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*/
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private parseWorkflowStepOutput(rawOutput: string): {
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output: string;
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verdict?: "PASS" | "FAIL";
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notes?: string;
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} {
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const trimmed = rawOutput.trim();
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// Try structured JSON block first
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const jsonBlockMatch = trimmed.match(
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/```json-workflow-verdict\s*\n([\s\S]*?)\n\s*```/,
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);
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if (jsonBlockMatch) {
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try {
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const parsed = JSON.parse(jsonBlockMatch[1].trim());
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if (parsed.verdict === "PASS" || parsed.verdict === "FAIL") {
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const proseBefore = trimmed.slice(0, trimmed.indexOf(jsonBlockMatch[0])).trim();
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return {
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output: proseBefore || parsed.notes || "",
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verdict: parsed.verdict,
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notes: parsed.notes,
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};
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}
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} catch {
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// Malformed JSON — fall through to prose parsing
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}
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}
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// Fallback: no structured block found, return raw output
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return { output: trimmed };
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}
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/**
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* Execute a single workflow step by spawning an agent with the step's prompt.
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* Returns structured outcome with support for revision requests.
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@@ -6562,29 +6613,33 @@ You have access to the file system to review changes.
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## Feedback Format
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When your review is complete, you MUST use one of these exact formats:
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When your review is complete, your response MUST end with a structured verdict block.
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**For PASS (no issues found):**
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Simply state your findings and approval. No special formatting required.
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**Structure:**
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1. Your prose findings (any length — explain what you reviewed, what passed, what didn't).
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2. A fenced JSON block at the very end:
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**For REVISION REQUESTED (issues found that require code changes):**
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Your response MUST start with the exact phrase:
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\`REQUEST REVISION\`
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\`\`\`json-workflow-verdict
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{"verdict":"PASS","notes":"<optional short summary>"}
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\`\`\`
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Followed by a clear, actionable description of what needs to be fixed.
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Be specific: reference exact files, line numbers, or functions that need changes.
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or for failures:
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Example:
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\`REQUEST REVISION
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\`\`\`json-workflow-verdict
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{"verdict":"FAIL","notes":"<what needs to change>"}
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\`\`\`
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The login function in src/auth.ts does not handle the case where the user
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account is locked. Add proper error handling for the LOCKED_ACCOUNT error code
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and show an appropriate message to the user.\`
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**Rules:**
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- The JSON block MUST be the last thing in your response.
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- \`verdict\` must be exactly \`"PASS"\` or \`"FAIL"\`.
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- \`notes\` is optional but recommended — a concise human-readable summary.
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- For FAIL, describe what needs to change in both the prose and \`notes\`.
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- If this step is out of scope (no relevant files), fast-bail:
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\`\`\`json-workflow-verdict
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{"verdict":"PASS","notes":"No relevant changes in scope — approved."}
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\`\`\`
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**Important:**
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- Only use "REQUEST REVISION" when the implementation needs code changes.
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- If the code is correct and no changes are needed, just state your findings.
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- Be constructive and actionable — vague feedback wastes the executor's time.`;
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**Backward compat:** If you cannot produce JSON, you may still use \`REQUEST REVISION\` at the start of your response to signal failure. The prose format is deprecated — prefer JSON.`;
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const agentLogger = new AgentLogger({
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store: this.store,
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@@ -6739,14 +6794,36 @@ and show an appropriate message to the user.\`
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session.dispose();
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await agentLogger.flush();
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const parsed = this.parseWorkflowStepOutput(output);
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const trimmedOutput = output.trim();
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// Structured verdict takes priority
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if (parsed.verdict) {
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if (parsed.verdict === "FAIL") {
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return {
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success: false,
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revisionRequested: true,
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output: parsed.output,
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verdict: "FAIL",
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notes: parsed.notes,
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};
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}
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return {
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success: true,
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output: parsed.output,
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verdict: "PASS",
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notes: parsed.notes,
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};
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}
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// Fallback: prose-based REQUEST REVISION detection
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const revisionMatch = trimmedOutput.match(/^REQUEST REVISION\s*\n*/i);
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if (revisionMatch) {
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const feedbackStart = revisionMatch[0].length;
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const feedback = trimmedOutput.slice(feedbackStart).trim();
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return { success: false, revisionRequested: true, output: feedback };
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}
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return { success: true, output };
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return { success: true, output: trimmedOutput };
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} catch (err: unknown) {
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await agentLogger.flush();
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try { session.dispose(); } catch { /* best-effort */ }
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