refactoring

src/utils/configUtils.js

@@ -1,5 +1,16 @@
 export const sortEntriesByLabel = (entries = []) => {
-  return [...entries].sort((a, b) =>
-    (a?.label || '').localeCompare(b?.label || '', 'de', { sensitivity: 'base' })
-  );
+  return [...entries].sort((a, b) => {
+    const labelA = (a?.label || '').trim();
+    const labelB = (b?.label || '').trim();
+    if (!labelA && !labelB) {
+      return 0;
+    }
+    if (!labelA) {
+      return 1;
+    }
+    if (!labelB) {
+      return -1;
+    }
+    return labelA.localeCompare(labelB, 'de', { sensitivity: 'base' });
+  });
 };

src/utils/configUtils.test.js

@@ -0,0 +1,21 @@
+import { sortEntriesByLabel } from './configUtils';
+
+describe('configUtils', () => {
+  test('sortEntriesByLabel orders entries alphabetically', () => {
+    const entries = [
+      { label: 'Zeta Markt' },
+      { label: 'alpha Shop' },
+      { label: 'Beta Store' }
+    ];
+    const sorted = sortEntriesByLabel(entries);
+    expect(sorted.map((item) => item.label)).toEqual(['alpha Shop', 'Beta Store', 'Zeta Markt']);
+  });
+
+  test('sortEntriesByLabel handles missing labels', () => {
+    const entries = [{}, { label: 'B' }, { label: 'A' }];
+    const sorted = sortEntriesByLabel(entries);
+    expect(sorted[0].label).toBe('A');
+    expect(sorted[1].label).toBe('B');
+    expect(sorted[2].label).toBeUndefined();
+  });
+});

src/utils/dateUtils.test.js

@@ -0,0 +1,27 @@
+import { buildSelectionRange, formatDateValue, formatRangeLabel, parseDateValue } from './dateUtils';
+
+describe('dateUtils', () => {
+  test('parseDateValue returns null for invalid input', () => {
+    expect(parseDateValue('invalid')).toBeNull();
+    expect(parseDateValue('')).toBeNull();
+  });
+
+  test('formatDateValue formats valid dates', () => {
+    const date = new Date('2024-02-10T00:00:00.000Z');
+    expect(formatDateValue(date)).toBe('2024-02-10');
+  });
+
+  test('formatRangeLabel handles ranges and single dates', () => {
+    expect(formatRangeLabel('2024-02-10', '2024-02-10')).toBe('10.02.2024');
+    expect(formatRangeLabel('2024-02-10', '2024-02-12')).toBe('10.02.2024 – 12.02.2024');
+    expect(formatRangeLabel(null, null)).toBe('Zeitraum auswählen');
+  });
+
+  test('buildSelectionRange enforces minimum date', () => {
+    const minDate = new Date('2024-05-01T00:00:00.000Z');
+    const selection = buildSelectionRange('2024-04-01', '2024-04-05', minDate);
+    expect(selection.startDate).toEqual(minDate);
+    expect(selection.endDate).toEqual(minDate);
+    expect(selection.key).toBe('selection');
+  });
+});