tests/Get-FilteredRestoreFile.Tests.ps1

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$commandname = $MyInvocation.MyCommand.Name.Replace(".ps1","")
Write-Host -Object "Running $PSCommandpath" -ForegroundColor Cyan
. "$PSScriptRoot\constants.ps1"

Describe "$commandname Unit Tests" -Tag 'UnitTests' {
    InModuleScope dbatools {
        Context "Empty TLog Backup Issues" {
            $Header = ConvertFrom-Json -InputObject (Get-Content $PSScriptRoot\..\tests\ObjectDefinitions\BackupRestore\RawInput\EmptyTlogData.json -raw)
            Mock Read-DbaBackupHeader { $Header }
            $Output = Get-FilteredRestoreFile -SqlServer TestSQL -Files "c:\dummy.txt" -silent:$true
            
            It "Should return an array of 3 items" {
                $Output[0].values.count | Should be 3
            }
            It "Should return 1 Full backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Database' } | Measure-Object).count | Should Be 1
            }
            It "Should return 0 Diff backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Database Differential' } | Measure-Object).count | Should Be 0
            }
            It "Should return 2 log backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Transaction Log' } | Measure-Object).count | Should Be 2
            }
        }
        Context "General Diff Restore" {
            $Header = ConvertFrom-Json -InputObject (Get-Content $PSScriptRoot\..\tests\ObjectDefinitions\BackupRestore\RawInput\DiffRestore.json -raw)
            Mock Read-DbaBackupHeader { $Header }
            $Output = Get-FilteredRestoreFile -SqlServer 'TestSQL' -Files "c:\dummy.txt"
            
            It "Should return an array of 7 items" {
                $Output[0].values.count | Should be 7
            }
            It "Should return 1 Full backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Database' } | Measure-Object).count | Should Be 1
            }
            It "Should return 1 Diff backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Database Differential' } | Measure-Object).count | Should Be 1
            }
            It "Should return 5 log backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Transaction Log' } | Measure-Object).count | Should Be 5
            }
        }
        Context "Missing Diff Restore" {
            $Header = ConvertFrom-Json -InputObject (Get-Content $PSScriptRoot\..\tests\ObjectDefinitions\BackupRestore\RawInput\DiffRestore.json -raw)
            $header = $header | Where-Object { $_.BackupTypeDescription -ne 'Database Differential' }
            Mock Read-DbaBackupHeader { $Header }
            $Output = Get-FilteredRestoreFile -SqlServer 'TestSQL' -Files "c:\dummy.txt"
            $Output
            It "Should return an array of 9 items" {
                $Output[0].values.count | Should be 9
            }
            It "Should return 1 Full backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Database' } | Measure-Object).count | Should Be 1
            }
            It "Should return 0 Diff backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Database Differential' } | Measure-Object).count | Should Be 0
            }
            It "Should return 8 log backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Transaction Log' } | Measure-Object).count | Should Be 8
            }
        }
        Context "Overlapping Diff and log Restore" {
            $Header = ConvertFrom-Json -InputObject (Get-Content $PSScriptRoot\..\tests\ObjectDefinitions\BackupRestore\RawInput\DiffIssues.json -raw)
            Mock Read-DbaBackupHeader { $Header }
            $RestoreDate =  Get-date "2017-07-18 09:00:00"
            $Output = Get-FilteredRestoreFile -SqlServer 'TestSQL' -Files "c:\dummy.txt" -RestoreTime $RestoreDate
            $Output
            It "Should return an array of 193 items" {
                $Output[0].values.count | Should be 194
            }
            It "Should return 1 Full backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Database' } | Measure-Object).count | Should Be 1
            }
            It "Should return 1 Diff backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Database Differential' } | Measure-Object).count | Should Be 1
            }
            It "Should return 191 log backups" {
                ($Output[0].values | Where-Object { $_.BackupTypeDescription -eq 'Transaction Log' } | Measure-Object).count | Should Be 192
            }
            It "Should not contain the Log backup with LastLsn 17126786000011867500001 " {
                ($Output[0].values | Where-Object { $_.LastLsn -eq '17126786000011867500001' } | Measure-Object).count | Should Be 0
            }
        }
    }
}