Get-DbaDbCheckConstraint.Tests.ps1

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

Describe "$CommandName Unit Tests" -Tags 'UnitTests' {
    Context "Validate parameters" {
        <#
            The $paramCount is adjusted based on the parameters your command will have.
            The $defaultParamCount is adjusted based on what type of command you are writing the test for:
                - Commands that *do not* include SupportShouldProcess, set defaultParamCount    = 11
                - Commands that *do* include SupportShouldProcess, set defaultParamCount        = 13
        #>
        $paramCount = 6
        $defaultParamCount = 11
        [object[]]$params = (Get-ChildItem function:\Get-DbaDbCheckConstraint).Parameters.Keys
        $knownParameters = 'SqlInstance', 'SqlCredential', 'EnableException', 'Database', 'ExcludeDatabase', 'ExcludeSystemTable'
        It "Should contain our specific parameters" {
            ((Compare-Object -ReferenceObject $knownParameters -DifferenceObject $params -IncludeEqual | Where-Object SideIndicator -eq "==").Count) | Should Be $paramCount
        }
        It "Should only contain $paramCount parameters" {
            $params.Count - $defaultParamCount | Should Be $paramCount
        }
    }
}

Describe "$commandname Integration Tests" -Tag "IntegrationTests" {
    BeforeAll {
        $server = Connect-DbaInstance -SqlInstance $script:instance2
        $random = Get-Random
        $tableName = "dbatools_getdbtbl1"
        $tableName2 = "dbatools_getdbtbl2"
        $ckName = "dbatools_getdbck"
        $dbname = "dbatoolsci_getdbfk$random"
        $server.Query("CREATE DATABASE $dbname")
        $server.Query("CREATE TABLE $tableName (idTbl1 INT PRIMARY KEY)", $dbname)
        $server.Query("CREATE TABLE $tableName2 (idTbl2 INT, idTbl1 INT, id3 INT)", $dbname)
        $server.Query("ALTER TABLE $tableName2 ADD CONSTRAINT $ckName CHECK (id3 > 10)", $dbname)
    }

    AfterAll {
        $null = Get-DbaDatabase -SqlInstance $script:instance2 -Database $dbname | Remove-DbaDatabase -Confirm:$false
    }

    Context "Command actually works" {
        It "returns no check constraints from excluded DB with -ExcludeDatabase" {
            $results = Get-DbaDbCheckConstraint -SqlInstance $script:instance2 -ExcludeDatabase master
            $results.where( {$_.Database -eq 'master'}).count | Should Be 0
        }
        It "returns only check constraints from selected DB with -Database" {
            $results = Get-DbaDbCheckConstraint -SqlInstance $script:instance2 -Database $dbname
            $results.where( {$_.Database -ne 'master'}).count | Should Be 1
        }
        It "Should include test check constraint: $ckName" {
            $results = Get-DbaDbCheckConstraint -SqlInstance $script:instance2 -Database $dbname -ExcludeSystemTable
            ($results | Where-Object Name -eq $ckName).Name | Should Be $ckName
        }
        It "Should exclude system tables" {
            $results = Get-DbaDbCheckConstraint -SqlInstance $script:instance2 -Database master -ExcludeSystemTable
            ($results | Where-Object Name -eq 'spt_fallback_db') | Should Be $null
        }
    }
}