feat: add connection and ssh zod schemas

test/unit/config/types.test.ts

@@ -0,0 +1,50 @@
+import { describe, expect, it } from 'vitest'
+import { connectionConfigSchema, defaultPort } from '../../../src/config/types.js'
+
+describe('connectionConfigSchema', () => {
+    const minimal = {
+        name: 'lab-pg',
+        type: 'postgres',
+        host: 'localhost',
+        user: 'postgres'
+    }
+
+    it('accepts minimal config and applies defaults', () => {
+        const parsed = connectionConfigSchema.parse(minimal)
+        expect(parsed.readonly).toBe(false)
+        expect(parsed.port).toBeUndefined()
+        expect(parsed.ssh).toBeUndefined()
+    })
+
+    it('accepts full config with ssh and defaults ssh port to 22', () => {
+        const parsed = connectionConfigSchema.parse({
+            ...minimal,
+            port: 5433,
+            password: 'secret',
+            database: 'app',
+            readonly: true,
+            ssh: { host: 'bastion', user: 'root', privateKeyPath: '~/.ssh/id_ed25519' }
+        })
+        expect(parsed.ssh?.port).toBe(22)
+        expect(parsed.readonly).toBe(true)
+    })
+
+    it('rejects bad name characters', () => {
+        expect(() => connectionConfigSchema.parse({ ...minimal, name: 'bad name!' })).toThrow()
+    })
+
+    it('rejects unknown engine type', () => {
+        expect(() => connectionConfigSchema.parse({ ...minimal, type: 'oracle' })).toThrow()
+    })
+
+    it('rejects empty host', () => {
+        expect(() => connectionConfigSchema.parse({ ...minimal, host: '' })).toThrow()
+    })
+})
+
+describe('defaultPort', () => {
+    it('returns 5432 for postgres and 3306 for mysql', () => {
+        expect(defaultPort('postgres')).toBe(5432)
+        expect(defaultPort('mysql')).toBe(3306)
+    })
+})