test: PR#27新增单元测试和e2e测试

后端: auto_translate/title_case 14个测试
前端: EDITOR_ONLY_TAGS、drop单复数、已下架过滤 11个测试
E2E: en_name title case、删除用户转移配方、管理配方登录引导

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/cypress/e2e/pr27-features.cy.js

@@ -0,0 +1,190 @@
+describe('PR27 Feature Tests', () => {
+  const ADMIN_TOKEN = 'c86ae7afbe10fabe3c1d5e1a7fee74feaadfd5dc7be2ab62'
+  const authHeaders = { Authorization: `Bearer ${ADMIN_TOKEN}` }
+  const TEST_USERNAME = 'cypress_pr27_user'
+
+  // -------------------------------------------------------------------------
+  // API: en_name auto title case on recipe create
+  // -------------------------------------------------------------------------
+  describe('API: en_name auto title case', () => {
+    let recipeId
+
+    after(() => {
+      // Cleanup
+      if (recipeId) {
+        cy.request({
+          method: 'DELETE',
+          url: `/api/recipes/${recipeId}`,
+          headers: authHeaders,
+          failOnStatusCode: false
+        })
+      }
+    })
+
+    it('auto title-cases en_name when provided', () => {
+      cy.request({
+        method: 'POST',
+        url: '/api/recipes',
+        headers: authHeaders,
+        body: {
+          name: 'PR27标题测试',
+          en_name: 'pain relief blend',
+          ingredients: [{ oil_name: '薰衣草', drops: 3 }],
+          tags: []
+        }
+      }).then(res => {
+        expect(res.status).to.be.oneOf([200, 201])
+        recipeId = res.body.id
+      })
+    })
+
+    it('verifies en_name is title-cased', () => {
+      cy.request('/api/recipes').then(res => {
+        const found = res.body.find(r => r.name === 'PR27标题测试')
+        expect(found).to.exist
+        expect(found.en_name).to.eq('Pain Relief Blend')
+        recipeId = found.id
+      })
+    })
+
+    it('auto translates en_name from Chinese when not provided', () => {
+      cy.request({
+        method: 'POST',
+        url: '/api/recipes',
+        headers: authHeaders,
+        body: {
+          name: '助眠配方',
+          ingredients: [{ oil_name: '薰衣草', drops: 5 }],
+          tags: []
+        }
+      }).then(res => {
+        expect(res.status).to.be.oneOf([200, 201])
+        const autoId = res.body.id
+
+        cy.request('/api/recipes').then(listRes => {
+          const found = listRes.body.find(r => r.id === autoId)
+          expect(found).to.exist
+          // auto_translate('助眠配方') should produce English with "Sleep" and "Blend"
+          expect(found.en_name).to.be.a('string')
+          expect(found.en_name.length).to.be.greaterThan(0)
+          expect(found.en_name).to.include('Sleep')
+
+          // Cleanup
+          cy.request({
+            method: 'DELETE',
+            url: `/api/recipes/${autoId}`,
+            headers: authHeaders,
+            failOnStatusCode: false
+          })
+        })
+      })
+    })
+  })
+
+  // -------------------------------------------------------------------------
+  // API: delete user transfers diary recipes to admin
+  // -------------------------------------------------------------------------
+  describe('API: delete user transfers diary', () => {
+    let testUserId
+    let testUserToken
+
+    // Cleanup leftover test user
+    before(() => {
+      cy.request({
+        url: '/api/users',
+        headers: authHeaders
+      }).then(res => {
+        const leftover = res.body.find(u => u.username === TEST_USERNAME)
+        if (leftover) {
+          cy.request({
+            method: 'DELETE',
+            url: `/api/users/${leftover.id || leftover._id}`,
+            headers: authHeaders,
+            failOnStatusCode: false
+          })
+        }
+      })
+    })
+
+    it('creates a test user', () => {
+      cy.request({
+        method: 'POST',
+        url: '/api/users',
+        headers: authHeaders,
+        body: {
+          username: TEST_USERNAME,
+          display_name: 'PR27 Test User',
+          role: 'editor'
+        }
+      }).then(res => {
+        expect(res.status).to.be.oneOf([200, 201])
+        testUserId = res.body.id || res.body._id
+        testUserToken = res.body.token
+        expect(testUserId).to.be.a('number')
+      })
+    })
+
+    it('adds a diary entry for the test user', () => {
+      const userAuth = { Authorization: `Bearer ${testUserToken}` }
+      cy.request({
+        method: 'POST',
+        url: '/api/diary',
+        headers: userAuth,
+        body: {
+          name: 'PR27用户日记',
+          ingredients: [{ oil: '乳香', drops: 4 }, { oil: '薰衣草', drops: 2 }],
+          note: '转移测试'
+        }
+      }).then(res => {
+        expect(res.status).to.be.oneOf([200, 201])
+      })
+    })
+
+    it('deletes the user and transfers diary to admin', () => {
+      cy.request({
+        method: 'DELETE',
+        url: `/api/users/${testUserId}`,
+        headers: authHeaders
+      }).then(res => {
+        expect(res.status).to.eq(200)
+        expect(res.body.ok).to.eq(true)
+      })
+    })
+
+    it('verifies diary was transferred to admin', () => {
+      cy.request({
+        url: '/api/diary',
+        headers: authHeaders
+      }).then(res => {
+        expect(res.body).to.be.an('array')
+        // Transferred diary should have user's name appended
+        const transferred = res.body.find(d => d.name && d.name.includes('PR27用户日记') && d.name.includes('PR27 Test User'))
+        expect(transferred).to.exist
+        expect(transferred.note).to.eq('转移测试')
+
+        // Cleanup: delete the transferred diary
+        if (transferred) {
+          cy.request({
+            method: 'DELETE',
+            url: `/api/diary/${transferred.id}`,
+            headers: authHeaders,
+            failOnStatusCode: false
+          })
+        }
+      })
+    })
+  })
+
+  // -------------------------------------------------------------------------
+  // UI: 管理配方 login prompt when not logged in
+  // -------------------------------------------------------------------------
+  describe('UI: RecipeManager login prompt', () => {
+    it('shows login prompt when not logged in', () => {
+      // Clear any stored auth
+      cy.clearLocalStorage()
+      cy.visit('/#/manage')
+      cy.contains('登录后可管理配方').should('be.visible')
+      cy.contains('登录 / 注册').should('be.visible')
+    })
+  })
+})