🐛 fix(table-designer): 修复索引编辑丢失与勾选异常

frontend/src/components/tableDesignerIndexUtils.test.ts

@@ -0,0 +1,95 @@
+import { describe, expect, it } from 'vitest';
+
+import {
+  hasIndexFormChanged,
+  normalizeIndexFormFromRow,
+  shouldRestoreOriginalIndex,
+  toggleIndexSelection,
+  type IndexDisplaySnapshot,
+  type IndexFormSnapshot,
+} from './tableDesignerIndexUtils';
+
+describe('tableDesignerIndexUtils', () => {
+  it('normalizes index rows for edit form reuse', () => {
+    const row: IndexDisplaySnapshot = {
+      key: 'idx_user_name',
+      name: 'idx_user_name',
+      indexType: 'btree',
+      nonUnique: 0,
+      columnNames: ['name'],
+    };
+
+    expect(normalizeIndexFormFromRow(row, ['NORMAL', 'UNIQUE', 'PRIMARY', 'FULLTEXT', 'SPATIAL'])).toEqual({
+      name: 'idx_user_name',
+      columnNames: ['name'],
+      kind: 'UNIQUE',
+      indexType: 'BTREE',
+    });
+  });
+
+  it('detects no-op index edits as unchanged', () => {
+    const previousForm: IndexFormSnapshot = {
+      name: 'idx_user_name',
+      columnNames: ['name'],
+      kind: 'UNIQUE',
+      indexType: 'BTREE',
+    };
+    const nextForm: IndexFormSnapshot = {
+      name: 'idx_user_name',
+      columnNames: ['name'],
+      kind: 'UNIQUE',
+      indexType: 'BTREE',
+    };
+
+    expect(hasIndexFormChanged(previousForm, nextForm)).toBe(false);
+  });
+
+  it('marks edits as changed when index columns differ', () => {
+    const previousForm: IndexFormSnapshot = {
+      name: 'idx_user_name',
+      columnNames: ['name'],
+      kind: 'NORMAL',
+      indexType: 'DEFAULT',
+    };
+    const nextForm: IndexFormSnapshot = {
+      name: 'idx_user_name',
+      columnNames: ['name', 'email'],
+      kind: 'NORMAL',
+      indexType: 'DEFAULT',
+    };
+
+    expect(hasIndexFormChanged(previousForm, nextForm)).toBe(true);
+  });
+
+  it('toggles selected index keys without duplicates', () => {
+    expect(toggleIndexSelection([], 'idx_user_name', true)).toEqual(['idx_user_name']);
+    expect(toggleIndexSelection(['idx_user_name'], 'idx_user_name', true)).toEqual(['idx_user_name']);
+    expect(toggleIndexSelection(['idx_user_name'], 'idx_user_name')).toEqual([]);
+  });
+
+  it('keeps single-selection toggles stable across repeated clicks', () => {
+    let selected = toggleIndexSelection([], 'idx_user_name');
+    expect(selected).toEqual(['idx_user_name']);
+
+    selected = toggleIndexSelection(selected, 'idx_user_name');
+    expect(selected).toEqual([]);
+
+    selected = toggleIndexSelection(selected, 'idx_user_name');
+    expect(selected).toEqual(['idx_user_name']);
+
+    selected = toggleIndexSelection(selected, 'idx_user_email');
+    expect(selected).toEqual(['idx_user_name', 'idx_user_email']);
+
+    selected = toggleIndexSelection(selected, 'idx_user_email');
+    expect(selected).toEqual(['idx_user_name']);
+
+    selected = toggleIndexSelection(selected, 'idx_user_name');
+    expect(selected).toEqual([]);
+  });
+
+  it('only restores original index when create step fails after drop step', () => {
+    expect(shouldRestoreOriginalIndex({ failedStatementIndex: 1 })).toBe(true);
+    expect(shouldRestoreOriginalIndex({ failedStatementIndex: 0 })).toBe(false);
+    expect(shouldRestoreOriginalIndex({})).toBe(false);
+  });
+});