Example DSC Resource Unit Tests for Get-TargetResource function

Example_DSCUnitTestsForGet-TargetResource.ps1

Describe "$($Global:DSCResourceName)\Get-TargetResource" {

	Context 'Virtual Disk does not exist' {
		
		Mock Get-iSCSIVirtualDisk

		It 'should return absent Virtual Disk' {
			$Result = Get-TargetResource `
				-Path $TestVirtualDisk.Path
			$Result.Ensure                  | Should Be 'Absent'
		}
		It 'should call the expected mocks' {
			Assert-MockCalled -commandName Get-iSCSIVirtualDisk -Exactly 1
		} 
	}

	Context 'Virtual Disk does exist' {
		
		Mock Get-iSCSIVirtualDisk -MockWith { return @($TestVirtualDisk) }

		It 'should return correct Virtual Disk' {
			$Result = Get-TargetResource `
				-Path $TestVirtualDisk.Path
			$Result.Ensure                  | Should Be 'Present'
			$Result.Path                    | Should Be $TestVirtualDisk.Path
			$Result.DiskType                | Should Be $TestVirtualDisk.DiskType
			$Result.SizeBytes               | Should Be $TestVirtualDisk.SizeBytes
			$Result.Description             | Should Be $TestVirtualDisk.Description
			$Result.PhysicalSectorSizeBytes | Should Be $TestVirtualDisk.PhysicalSectorSizeBytes
			$Result.LogicalSectorSizeBytes  | Should Be $TestVirtualDisk.LogicalSectorSizeBytes
		}
		It 'should call the expected mocks' {
			Assert-MockCalled -commandName Get-iSCSIVirtualDisk -Exactly 1
		}
	}
}