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Copy pathsql-generate.test.ts
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122 lines (112 loc) · 3.3 KB
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import { describe, it, expect } from 'vitest'
import {
generateSelect,
generateInsert,
generateUpdate,
generateDelete,
} from '../src/lib/sql/generate'
describe('SQL generators', () => {
describe('generateSelect', () => {
it('generates a SELECT statement with LIMIT 100', async () => {
const result = await generateSelect('users')
expect(result).toBe(`SELECT
*
FROM
users
LIMIT
100;`)
})
})
describe('generateInsert', () => {
it('generates an INSERT statement with column placeholders', async () => {
const columns = [
{ name: 'id', type: 'integer', nullable: false },
{ name: 'name', type: 'varchar', nullable: true },
{ name: 'email', type: 'varchar', nullable: false },
]
const result = await generateInsert('users', columns)
expect(result).toBe(`INSERT INTO users (
id,
name,
email
)
VALUES (
'<id>',
'<name>',
'<email>'
);`)
})
it('returns empty string for empty columns', async () => {
const result = await generateInsert('users', [])
expect(result).toBe('')
})
})
describe('generateUpdate', () => {
it('generates an UPDATE statement with PK in WHERE', async () => {
const columns = [
{ name: 'id', type: 'integer', nullable: false },
{ name: 'name', type: 'varchar', nullable: true },
{ name: 'email', type: 'varchar', nullable: false },
]
const result = await generateUpdate('users', columns, ['id'])
expect(result).toBe(`UPDATE users
SET
name = '<name>',
email = '<email>'
WHERE
id = '<id>';`)
})
it('uses placeholder comment when no PK', async () => {
const columns = [
{ name: 'name', type: 'varchar', nullable: true },
{ name: 'email', type: 'varchar', nullable: false },
]
const result = await generateUpdate('users', columns, [])
expect(result).toBe(`UPDATE users
SET
name = '<name>',
email = '<email>'
WHERE
/* condition */;`)
})
it('handles composite primary keys', async () => {
const columns = [
{ name: 'user_id', type: 'integer', nullable: false },
{ name: 'role_id', type: 'integer', nullable: false },
{ name: 'created_at', type: 'timestamp', nullable: false },
]
const result = await generateUpdate('user_roles', columns, ['user_id', 'role_id'])
expect(result).toBe(`UPDATE user_roles
SET
created_at = '<created_at>'
WHERE
user_id = '<user_id>'
AND role_id = '<role_id>';`)
})
it('returns empty string for empty columns', async () => {
const result = await generateUpdate('users', [], ['id'])
expect(result).toBe('')
})
})
describe('generateDelete', () => {
it('generates a DELETE statement with PK in WHERE', async () => {
const result = await generateDelete('users', ['id'])
expect(result).toBe(`DELETE FROM users
WHERE
id = '<id>';`)
})
it('uses placeholder comment when no PK', async () => {
const result = await generateDelete('users', [])
expect(result).toBe(`DELETE FROM users
WHERE
/* condition */;`)
})
it('handles composite primary keys', async () => {
const result = await generateDelete('user_roles', ['user_id', 'role_id'])
expect(result).toBe(`DELETE FROM user_roles
WHERE
user_id = '<user_id>'
AND role_id = '<role_id>';`)
})
})
})