Acme.Biz.Tests.VendorTests.SendWelcomeEmail_ValidCompany_Success C# (CSharp) Method

        public void SendWelcomeEmail_ValidCompany_Success()
        {
            // Arrange
            var vendor = new Vendor();
            vendor.CompanyName = "ABC Corp";
            var expected = "Message sent: Hello ABC Corp";

            // Act
            var actual = vendor.SendWelcomeEmail("Test Message");

            // Assert
            Assert.AreEqual(expected, actual);
        }