tests/Restore-DbaDbSnapshot.Tests.ps1

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

# Targets only instance2 because it's the only one where Snapshots can happen
Describe "$commandname Integration Tests" -Tag "IntegrationTests" {
    BeforeAll {
        Get-DbaProcess -SqlInstance $script:instance2 | Where-Object Program -match dbatools | Stop-DbaProcess -Confirm:$false -WarningAction SilentlyContinue
        $server = Connect-DbaInstance -SqlInstance $script:instance2
        $db1 = "dbatoolsci_RestoreSnap1"
        $db1_snap1 = "dbatoolsci_RestoreSnap1_snapshotted1"
        $db1_snap2 = "dbatoolsci_RestoreSnap1_snapshotted2"
        $db2 = "dbatoolsci_RestoreSnap2"
        $db2_snap1 = "dbatoolsci_RestoreSnap2_snapshotted1"
        Remove-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db1, $db2 -Confirm:$false
        Get-DbaDatabase -SqlInstance $script:instance2 -Database $db1, $db2 | Remove-DbaDatabase -Confirm:$false
        $server.Query("CREATE DATABASE $db1")
        $server.Query("ALTER DATABASE $db1 MODIFY FILE ( NAME = N'$($db1)_log', SIZE = 13312KB )")
        $server.Query("CREATE DATABASE $db2")
        $server.Query("CREATE TABLE [$db1].[dbo].[Example] (id int identity, name nvarchar(max))")
        $server.Query("INSERT INTO [$db1].[dbo].[Example] values ('sample')")
        $server.Query("CREATE TABLE [$db2].[dbo].[Example] (id int identity, name nvarchar(max))")
        $server.Query("INSERT INTO [$db2].[dbo].[Example] values ('sample')")
    }
    AfterAll {
        Remove-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db1, $db2 -Confirm:$false -ErrorAction SilentlyContinue
        Remove-DbaDatabase -Confirm:$false -SqlInstance $script:instance2 -Database $db1, $db2 -ErrorAction SilentlyContinue
    }
    Context "Parameters validation" {
        It "Stops if no Database or Snapshot" {
            { Restore-DbaDbSnapshot -SqlInstance $script:instance2 -EnableException } | Should Throw "You must specify"
        }
        It "Is nice by default" {
            { Restore-DbaDbSnapshot -SqlInstance $script:instance2 *> $null } | Should Not Throw "You must specify"
        }
    }
    Context "Operations on snapshots" {
        BeforeEach {
            $null = New-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db1 -Name $db1_snap1 -ErrorAction SilentlyContinue
            $null = New-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db1 -Name $db1_snap2 -ErrorAction SilentlyContinue
            $null = New-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db2 -Name $db2_snap1 -ErrorAction SilentlyContinue
        }
        AfterEach {
            Remove-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db1, $db2 -Confirm:$false -ErrorAction SilentlyContinue
        }

        It "Honors the Database parameter, restoring only snapshots of that database" {
            $result = Restore-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db2 -Confirm:$false -EnableException -Force
            $result.Status | Should Be "Normal"
            $result.Name | Should Be $db2

            $server.Query("INSERT INTO [$db1].[dbo].[Example] values ('sample2')")
            $result = Restore-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db1 -Confirm:$false -Force
            $result.Name | Should Be $db1

            # the other snapshot has been dropped
            $result = Get-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db1
            $result.Count | Should Be 1

            # the query doesn't return records inserted before the restore
            $result = Invoke-SqlCmd2 -ServerInstance $script:instance2 -Query "SELECT * FROM [$db1].[dbo].[Example]" -QueryTimeout 10 -ConnectionTimeout 10
            $result.id | Should Be 1
        }

        It "Honors the Snapshot parameter" {
            $result = Restore-DbaDbSnapshot -SqlInstance $script:instance2 -Snapshot $db1_snap1 -Confirm:$false -EnableException -Force
            $result.Name | Should Be $db1
            $result.Status | Should Be "Normal"

            # the other snapshot has been dropped
            $result = Get-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db1
            $result.SnapshotOf | Should Be $db1
            $result.Database.Name | Should Be $db1_snap

            # the log size has been restored to the correct size
            $server.databases[$db1].Logfiles.Size | Should Be 13312
        }

        It "Stops if multiple snapshot for the same db are passed" {
            $result = Restore-DbaDbSnapshot -SqlInstance $script:instance2 -Snapshot $db1_snap1, $db1_snap2 -Confirm:$false *> $null
            $result | Should Be $null
        }

        It "has the correct default properties" {
            $result = Get-DbaDbSnapshot -SqlInstance $script:instance2 -Database $db2
            $ExpectedPropsDefault = 'ComputerName', 'CreateDate', 'InstanceName', 'Name', 'SnapshotOf', 'SqlInstance', 'DiskUsage'
            ($result.PSStandardMembers.DefaultDisplayPropertySet.ReferencedPropertyNames | Sort-Object) | Should Be ($ExpectedPropsDefault | Sort-Object)
        }
    }
}