Mock New-AzureRmDnsRecordConfig返回值的类型Microsoft.Azure.Commands.Dns.DnsRecordBase []

Question

我想为使用New-AzureRmDnsRecordSet的脚本编写单元测试。 New-AzureRmDnsRecordSet上的DnsRecords参数验证我传入的Microsoft.Azure.Commands.Dns.DnsRecordBase[]类型是New-AzureRmDnsRecordConfig的返回值。事情是，我似乎无法得到任何东西转换为DnsRecordBase类型。

这里是一个虚拟的脚本，显示我的问题：

function test-mocking { 
    $arecordtype = New-AzureRmDnsRecordConfig -Ipv4Address 1.2.3.4 
    New-AzureRmDnsRecordSet -Name "UT" -RecordType A -ResourceGroupName 'RG-UT' -TTL 60 -ZoneName 'zone1' -DnsRecords $arecordtype -Confirm:$False -Overwrite 
} 

Describe 'test-mocking' { 
    Mock New-AzureRmDnsRecordSet { return 'sup' } 
    Mock New-AzureRmDnsRecordConfig { return '1.2.3.4' } 

    it 'does nothing' { 
    test-mocking 
    Assert-MockCalled New-AzureRmDnsRecordSet 
    } 
} 

输出：

Describing test-mocking 
[-] does nothing 47ms 
    PSInvalidCastException: Cannot convert the "1.2.3.4" value of type "System.String" to type "Microsoft.Azure.Commands.Dns.DnsRecordBase[]". 
    ArgumentTransformationMetadataException: Cannot convert the "1.2.3.4" value of type "System.String" to type "Microsoft.Azure.Commands.Dns.DnsRecordBase[]". 
    ParameterBindingArgumentTransformationException: Cannot process argument transformation on parameter 'DnsRecords'. Cannot convert the "1.2.3.4" value of type "System.String" to type "Microsoft.Azure.Commands.Dns.DnsRecordBase[]". 
    at test-mocking, C:\Temp\testMock.ps1: line 3 
    at <ScriptBlock>, C:\Temp\testMock.ps1: line 11 

我在的地方 “1.2.3.4” ...整数，字符串的都试过了，阵列，System.Object，$null

我也不能运行New-AzureRmDnsRecordConfig来获取真实对象，因为该命令行需要我运行Login-AzureRmAccount。这是一个更大的脚本的一部分，我真的只是试图嘲笑这些以测试脚本内的其他东西。

我试着用纠缠的新cmdlet的New-MockObject但我得到这个错误：

[-] does nothing 110ms 
    MemberAccessException: Cannot create an abstract class. 
    MethodInvocationException: Exception calling "GetUninitializedObject" with "1" argument(s): "Cannot create an abstract class." 
    at New-MockObject, C:\Program Files\WindowsPowerShell\Modules\Pester\4.0.6\Functions\New-MockObject.ps1: line 22 
    at <ScriptBlock>, <No file>: line 1 
    at <ScriptBlock>, C:\Program Files\WindowsPowerShell\Modules\Pester\4.0.6\Functions\Mock.ps1: line 1111 
    at ExecuteBlock, C:\Program Files\WindowsPowerShell\Modules\Pester\4.0.6\Functions\Mock.ps1: line 1123 
    at Invoke-Mock, C:\Program Files\WindowsPowerShell\Modules\Pester\4.0.6\Functions\Mock.ps1: line 966 
    at <ScriptBlock><Process>, <No file>: line 119 
    at test-mocking, C:\Temp\testMock.ps1: line 2 
    at <ScriptBlock>, C:\Temp\testMock.ps1: line 11 

代码：

function test-mocking { 
    $arecordtype = New-AzureRmDnsRecordConfig -Ipv4Address 1.2.3.4 
    New-AzureRmDnsRecordSet -Name "UT" -RecordType A -ResourceGroupName 'RG-UT' -TTL 60 -ZoneName 'zone1' -DnsRecords $arecordtype -Confirm:$False -Overwrite 
} 

Describe 'test-mocking' { 
    Mock New-AzureRmDnsRecordSet { return 'sup' } 
    Mock New-AzureRmDnsRecordConfig { return New-MockObject -Type Microsoft.Azure.Commands.Dns.DnsRecordBase } 

    it 'does nothing' { 
    test-mocking 
    Assert-MockCalled New-AzureRmDnsRecordSet 
    } 
} 

Answer 1

您可以使用New-MockObject嘲笑你所需要的对象类型：https://github.com/pester/Pester/wiki/New-MockObject

New-MockObject is a Pester function (introduced in Pester 3.4.4) that allows you to create "fake" objects of almost any type to run in Pester mocks. These "fake objects" allow your mocks to return the same type as the function it was mocking to pass the result to entities that are strongly typed.