test: remaining header component and increase branch coverage (#33052)

Co-authored-by: sahil <sahil@infocusp.com>

web/app/components/header/utils/util.spec.ts

@@ -0,0 +1,61 @@
+import { generateMailToLink, mailToSupport } from './util'
+
+describe('generateMailToLink', () => {
+  // Email-only: both subject and body branches false
+  it('should return mailto link with email only when no subject or body provided', () => {
+    // Act
+    const result = generateMailToLink('test@example.com')
+
+    // Assert
+    expect(result).toBe('mailto:test@example.com')
+  })
+
+  // Subject provided, body not: subject branch true, body branch false
+  it('should append subject when subject is provided without body', () => {
+    // Act
+    const result = generateMailToLink('test@example.com', 'Hello World')
+
+    // Assert
+    expect(result).toBe('mailto:test@example.com?subject=Hello%20World')
+  })
+
+  // Body provided, no subject: subject branch false, body branch true
+  it('should append body with question mark when body is provided without subject', () => {
+    // Act
+    const result = generateMailToLink('test@example.com', undefined, 'Some body text')
+
+    // Assert
+    expect(result).toBe('mailto:test@example.com&body=Some%20body%20text')
+  })
+
+  // Both subject and body provided: both branches true
+  it('should append both subject and body when both are provided', () => {
+    // Act
+    const result = generateMailToLink('test@example.com', 'Subject', 'Body text')
+
+    // Assert
+    expect(result).toBe('mailto:test@example.com?subject=Subject&body=Body%20text')
+  })
+})
+
+describe('mailToSupport', () => {
+  // Transitive coverage: exercises generateMailToLink with all params
+  it('should generate a mailto link with support recipient, plan, account, and version info', () => {
+    // Act
+    const result = mailToSupport('user@test.com', 'Pro', '1.0.0')
+
+    // Assert
+    expect(result.startsWith('mailto:support@dify.ai?')).toBe(true)
+
+    const query = result.split('?')[1]
+    expect(query).toBeDefined()
+
+    const params = new URLSearchParams(query)
+    expect(params.get('subject')).toBe('Technical Support Request Pro user@test.com')
+
+    const body = params.get('body')
+    expect(body).toContain('Current Plan: Pro')
+    expect(body).toContain('Account: user@test.com')
+    expect(body).toContain('Version: 1.0.0')
+  })
+})