PowerShell/test/powershell/Modules/Microsoft.PowerShell.Utility/ConvertTo-Json.Tests.ps1

# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License.
Describe 'ConvertTo-Json' -tags "CI" {
    BeforeAll {
        $newline = [System.Environment]::NewLine
    }

    It 'Newtonsoft.Json.Linq.Jproperty should be converted to Json properly' {
        $EgJObject = New-Object -TypeName Newtonsoft.Json.Linq.JObject
        $EgJObject.Add("TestValue1", "123456")
        $EgJObject.Add("TestValue2", "78910")
        $EgJObject.Add("TestValue3", "99999")
        $dict = @{}
        $dict.Add('JObject', $EgJObject)
        $dict.Add('StrObject', 'This is a string Object')
        $properties = @{'DictObject' = $dict; 'RandomString' = 'A quick brown fox jumped over the lazy dog'}
        $object = New-Object -TypeName psobject -Property $properties
        $jsonFormat = ConvertTo-Json -InputObject $object
        $jsonFormat | Should -Match '"TestValue1": 123456'
        $jsonFormat | Should -Match '"TestValue2": 78910'
        $jsonFormat | Should -Match '"TestValue3": 99999'
    }

	It "StopProcessing should succeed" -Pending:$true {
        $ps = [PowerShell]::Create()
        $null = $ps.AddScript({
            $obj = [PSCustomObject]@{P1 = ''; P2 = ''; P3 = ''; P4 = ''; P5 = ''; P6 = ''}
            $obj.P1 = $obj.P2 = $obj.P3 = $obj.P4 = $obj.P5 = $obj.P6 = $obj
            1..100 | Foreach-Object { $obj } | ConvertTo-Json -Depth 10 -Verbose
            # the conversion is expected to take some time, this throw is in case it doesn't
            throw "Should not have thrown exception"
        })
        $null = $ps.BeginInvoke()
        # wait for verbose message from ConvertTo-Json to ensure cmdlet is processing
        Wait-UntilTrue { $ps.Streams.Verbose.Count -gt 0 } | Should -BeTrue
        $null = $ps.BeginStop($null, $null)
        # wait a bit to ensure state has changed, not using synchronous Stop() to avoid blocking Pester
        Start-Sleep -Milliseconds 100
        $ps.InvocationStateInfo.State | Should -BeExactly "Stopped"
        $ps.Dispose()
    }

    It "The result string is packed in an array symbols when AsArray parameter is used." {
        $output = 1 | ConvertTo-Json -AsArray
        $output | Should -BeLike "``[*1*]"

        $output = 1,2 | ConvertTo-Json -AsArray
        $output | Should -BeLike "``[*1*2*]"
    }

    It "The result string is not packed in the array symbols when there is only one input object and AsArray parameter is not used." {
        $output = 1 | ConvertTo-Json
        $output | Should -BeExactly '1'
    }

    It "The result string should <Name>." -TestCases @(
        @{name = "be not escaped by default.";                     params = @{};                              expected = "{$newline  ""abc"": ""'def'""$newline}" }
        @{name = "be not escaped with '-EscapeHandling Default'."; params = @{EscapeHandling = 'Default'};    expected = "{$newline  ""abc"": ""'def'""$newline}" }
        @{name = "be escaped with '-EscapeHandling EscapeHtml'.";  params = @{EscapeHandling = 'EscapeHtml'}; expected = "{$newline  ""abc"": ""\u0027def\u0027""$newline}" }
    ) {
        param ($name, $params ,$expected)

        @{ 'abc' = "'def'" } | ConvertTo-Json @params | Should -BeExactly $expected
    }

    It "Should handle null" {
        [pscustomobject] @{ prop=$null } | ConvertTo-Json -Compress | Should -BeExactly '{"prop":null}'
        $null | ConvertTo-Json -Compress | Should -Be 'null'
        ConvertTo-Json -Compress $null | Should -Be 'null'
        1, $null, 2 | ConvertTo-Json -Compress | Should -Be '[1,null,2]'
    }

    It "Should handle 'AutomationNull.Value' and 'NullString.Value' correctly" {
        [ordered]@{
            a = $null;
            b = [System.Management.Automation.Internal.AutomationNull]::Value;
            c = [System.DBNull]::Value;
            d = [NullString]::Value
        } | ConvertTo-Json -Compress | Should -BeExactly '{"a":null,"b":null,"c":null,"d":null}'

        ConvertTo-Json ([System.Management.Automation.Internal.AutomationNull]::Value) | Should -BeExactly 'null'
        ConvertTo-Json ([NullString]::Value) | Should -BeExactly 'null'

        ConvertTo-Json -Compress @(
            $null,
            [System.Management.Automation.Internal.AutomationNull]::Value,
            [System.DBNull]::Value,
            [NullString]::Value
        ) | Should -BeExactly '[null,null,null,null]'
    }

    It "Should handle the ETS properties added to 'DBNull.Value' and 'NullString.Value'" {
        try
        {
            $p1 = Add-Member -InputObject ([System.DBNull]::Value) -MemberType NoteProperty -Name dbnull -Value 'dbnull' -PassThru
            $p2 = Add-Member -InputObject ([NullString]::Value) -MemberType NoteProperty -Name nullstr -Value 'nullstr' -PassThru

            $p1, $p2 | ConvertTo-Json -Compress | Should -BeExactly '[{"value":null,"dbnull":"dbnull"},{"value":null,"nullstr":"nullstr"}]'
        }
        finally
        {
            $p1.psobject.Properties.Remove('dbnull')
            $p2.psobject.Properties.Remove('nullstr')
        }
    }
}