Fix empty TTR preview and retain singles with missing ratings

frontend/tests/ttrPreview.test.mjs

@@ -0,0 +1,86 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import vm from 'node:vm';
+import { calculateTtrChange } from '../src/services/ttrCalculator.mjs';
+
+const source = readFileSync(new URL('../src/components/MatchReportApiDialog.vue', import.meta.url), 'utf8');
+const script = source.match(/<script>([\s\S]*?)<\/script>/)[1]
+    .replace(/^import .*;\n/gm, '')
+    .replace('export default', 'globalThis.component =');
+const requests = [];
+const context = vm.createContext({ console, calculateTtrChange, apiClient: {
+    async post(url, body) {
+        requests.push({ url, body });
+        return { data: { players: [] } };
+    },
+} });
+vm.runInContext(script, context);
+const { methods, computed } = context.component;
+
+function dialog() {
+    return Object.assign({}, methods, {
+        results: [
+            { label: 'D1-D1', homeName: 'Anton Schottdorf / Anna Wolf', guestName: 'Yumin Kim / Timo Engler' },
+            { label: '1. Einzel der Runde', homeName: 'Anton Schottdorf', guestName: 'Yumin Kim', completed: false },
+        ],
+        ttrSnapshots: {},
+        ttrPlayers: [],
+    });
+}
+
+test('singles with a D in their title are retained while double formation labels are excluded', () => {
+    const report = dialog();
+    assert.equal(report.isTtrDouble(report.results[0]), true);
+    assert.equal(report.isTtrDouble(report.results[1]), false);
+    assert.equal(report.isTtrDouble({ label: 'DA2 – DB2' }), true);
+    assert.equal(report.isTtrDouble({ label: 'Doppel 1' }), true);
+    assert.equal(report.isTtrDouble({ label: '3. Runde', matchType: 'SINGLE' }), false);
+});
+
+test('missing TTR values retain the single and are not treated as zero', () => {
+    const report = dialog();
+    report.applyTtrPreviewPlayers([
+        { side: 'home', name: 'Anton Schottdorf', ttr: 1300 },
+        { side: 'guest', name: 'Yumin Kim', ttr: null },
+    ]);
+    const rows = computed.ttrSingles.call(report);
+    assert.equal(rows.length, 1);
+    assert.equal(rows[0].homeTtr, 1300);
+    assert.equal(rows[0].guestTtr, null);
+    assert.equal(rows[0].preview, null);
+    assert.equal(computed.ttrUnavailablePlayers.call(report)[0], 'Yumin Kim');
+});
+
+test('available ratings produce the preview and a completed single uses the entered result', () => {
+    const report = dialog();
+    report.applyTtrPreviewPlayers([
+        { side: 'home', name: 'Anton Schottdorf', ttr: 1300 },
+        { side: 'guest', name: 'Yumin Kim', ttr: 1300 },
+    ]);
+    assert.equal(computed.ttrSingles.call(report)[0].preview.homeWin.displayChange, 8);
+    report.results[1].completed = true;
+    report.getPlayerSetWins = (_match, side) => side === 'home' ? 3 : 0;
+    const row = computed.ttrSingles.call(report)[0];
+    assert.equal(row.actual.home.displayChange, 8);
+    assert.equal(row.actual.guest.displayChange, -8);
+});
+
+test('standalone test mode calls the API and keeps real pairings without inventing ratings', async () => {
+    const report = dialog();
+    Object.assign(report, {
+        standaloneTest: true,
+        canOpenTtrPreview: true,
+        meetingDetails: {},
+        meetingData: {},
+        $store: { getters: { currentClub: 1 } },
+        ttrLineupPlayers: () => [],
+    });
+    await report.loadTtrPreview();
+    assert.equal(requests.at(-1).url, '/matches/ttr-preview/standalone');
+    assert.equal(report.ttrError, '');
+    const rows = computed.ttrSingles.call(report);
+    assert.equal(rows.length, 1);
+    assert.equal(rows[0].homeTtr, null);
+    assert.equal(rows[0].preview, null);
+});