UI enhancemnts

tests/stock-scorer.test.ts

@@ -238,8 +238,97 @@ test('StockScorer', async (t) => {
     } as any;
 
     const result = StockScorer.score(metrics, DEFAULT_RULES);
-    // Should handle gracefully (zero is falsy, treated as null)
+    // Zero quick ratio is a real value and fails the liquidity gate;
+    // zero P/E, PEG, P/B are impossible values and are treated as missing.
     assert.ok(result);
+    assert.equal(result.label, '🔴 REJECT');
+    assert.ok(result.scoreSummary.includes('Quick'));
+  });
+
+  await t.test('treats zero revenue growth as a real (stagnant) value', () => {
+    const metrics: StockMetrics = {
+      peRatio: 12,
+      pegRatio: 0.8,
+      debtToEquity: 0.5,
+      quickRatio: 1.2,
+      returnOnEquity: 20,
+      operatingMargin: 15,
+      netProfitMargin: 10,
+      revenueGrowth: 0, // stagnant — must be scored, not skipped
+      fcfYield: 5,
+    } as any;
+
+    const result = StockScorer.score(metrics, DEFAULT_RULES);
+    assert.ok(result.audit?.passedGates);
+    // 0% growth is below revMed (5) → scores -1, same as slightly negative growth
+    assert.equal(result.audit?.breakdown?.revenue, -1);
+  });
+
+  await t.test('treats zero debt-to-equity as debt-free, not missing', () => {
+    const metrics: StockMetrics = {
+      peRatio: 12,
+      pegRatio: 0.8,
+      debtToEquity: 0, // debt-free — should pass the gate, not be skipped
+      quickRatio: 1.2,
+      returnOnEquity: 20,
+      operatingMargin: 15,
+      netProfitMargin: 10,
+      revenueGrowth: 8,
+      fcfYield: 5,
+    } as any;
+
+    const result = StockScorer.score(metrics, DEFAULT_RULES);
+    assert.ok(result.audit?.passedGates);
+    assert.notEqual(result.label, '🔴 REJECT');
+  });
+
+  await t.test('flags insufficient data instead of plain HOLD', () => {
+    const metrics: StockMetrics = { currentPrice: 50 } as any;
+
+    const result = StockScorer.score(metrics, DEFAULT_RULES);
+    assert.equal(result.label, '🟡 HOLD (No Data)');
+    assert.equal(result.audit?.coverage?.active, 0);
+  });
+
+  await t.test('returns structured tier and numeric score (P0.3)', () => {
+    const strong: StockMetrics = {
+      peRatio: 12,
+      pegRatio: 0.7,
+      debtToEquity: 0.3,
+      quickRatio: 1.5,
+      returnOnEquity: 30,
+      operatingMargin: 25,
+      netProfitMargin: 18,
+      revenueGrowth: 12,
+      fcfYield: 6,
+    } as any;
+    const pass = StockScorer.score(strong, DEFAULT_RULES);
+    assert.equal(pass.tier, 'PASS');
+    assert.ok(typeof pass.score === 'number' && pass.score >= 4);
+
+    const gated: StockMetrics = { ...strong, peRatio: 40 } as any;
+    const reject = StockScorer.score(gated, DEFAULT_RULES);
+    assert.equal(reject.tier, 'REJECT');
+    assert.equal(reject.score, null);
+
+    const noData = StockScorer.score({ currentPrice: 50 } as any, DEFAULT_RULES);
+    assert.equal(noData.tier, 'HOLD');
+    assert.equal(noData.score, 0);
+  });
+
+  await t.test('reports factor coverage in audit', () => {
+    const metrics: StockMetrics = {
+      peRatio: 12,
+      pegRatio: 0.8,
+      quickRatio: 1.2,
+      returnOnEquity: 20,
+      currentPrice: 50,
+    } as any;
+
+    const result = StockScorer.score(metrics, DEFAULT_RULES);
+    assert.ok(result.audit?.coverage);
+    assert.ok(result.audit.coverage.active >= 1);
+    assert.ok(result.audit.coverage.active <= result.audit.coverage.total);
   });
 
   await t.test('scores based on configured thresholds', () => {