Pester.psm1

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
# Pester
# Version: $version$
# Changeset: $sha$

if ($PSVersionTable.PSVersion.Major -ge 3)
{
    $script:IgnoreErrorPreference = 'Ignore'
    $outNullModule = 'Microsoft.PowerShell.Core'
}
else
{
    $script:IgnoreErrorPreference = 'SilentlyContinue'
    $outNullModule = 'Microsoft.PowerShell.Utility'
}

# Tried using $ExecutionState.InvokeCommand.GetCmdlet() here, but it does not trigger module auto-loading the way
# Get-Command does. Since this is at import time, before any mocks have been defined, that's probably acceptable.
# If someone monkeys with Get-Command before they import Pester, they may break something.

$script:SafeCommands = @{
    'Add-Member'          = Get-Command -Name Add-Member          -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Add-Type'            = Get-Command -Name Add-Type            -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Compare-Object'      = Get-Command -Name Compare-Object      -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Export-ModuleMember' = Get-Command -Name Export-ModuleMember -Module Microsoft.PowerShell.Core       -CommandType Cmdlet -ErrorAction Stop
    'ForEach-Object'      = Get-Command -Name ForEach-Object      -Module Microsoft.PowerShell.Core       -CommandType Cmdlet -ErrorAction Stop
    'Format-Table'        = Get-Command -Name Format-Table        -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Get-ChildItem'       = Get-Command -Name Get-ChildItem       -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Get-Command'         = Get-Command -Name Get-Command         -Module Microsoft.PowerShell.Core       -CommandType Cmdlet -ErrorAction Stop
    'Get-Content'         = Get-Command -Name Get-Content         -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Get-Date'            = Get-Command -Name Get-Date            -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Get-Item'            = Get-Command -Name Get-Item            -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Get-Location'        = Get-Command -Name Get-Location        -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Get-Member'          = Get-Command -Name Get-Member          -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Get-Module'          = Get-Command -Name Get-Module          -Module Microsoft.PowerShell.Core       -CommandType Cmdlet -ErrorAction Stop
    'Get-PSDrive'         = Get-Command -Name Get-PSDrive         -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Get-Variable'        = Get-Command -Name Get-Variable        -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Get-WmiObject'       = Get-Command -Name Get-WmiObject       -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Group-Object'        = Get-Command -Name Group-Object        -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Join-Path'           = Get-Command -Name Join-Path           -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Measure-Object'      = Get-Command -Name Measure-Object      -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'New-Item'            = Get-Command -Name New-Item            -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'New-Module'          = Get-Command -Name New-Module          -Module Microsoft.PowerShell.Core       -CommandType Cmdlet -ErrorAction Stop
    'New-Object'          = Get-Command -Name New-Object          -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'New-PSDrive'         = Get-Command -Name New-PSDrive         -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'New-Variable'        = Get-Command -Name New-Variable        -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Out-Null'            = Get-Command -Name Out-Null            -Module $outNullModule                  -CommandType Cmdlet -ErrorAction Stop
    'Out-String'          = Get-Command -Name Out-String          -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Pop-Location'        = Get-Command -Name Pop-Location        -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Push-Location'       = Get-Command -Name Push-Location       -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Remove-Item'         = Get-Command -Name Remove-Item         -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Remove-PSBreakpoint' = Get-Command -Name Remove-PSBreakpoint -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Remove-PSDrive'      = Get-Command -Name Remove-PSDrive      -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Remove-Variable'     = Get-Command -Name Remove-Variable     -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Resolve-Path'        = Get-Command -Name Resolve-Path        -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Select-Object'       = Get-Command -Name Select-Object       -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Set-Content'         = Get-Command -Name Set-Content         -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Set-PSBreakpoint'    = Get-Command -Name Set-PSBreakpoint    -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Set-StrictMode'      = Get-Command -Name Set-StrictMode      -Module Microsoft.PowerShell.Core       -CommandType Cmdlet -ErrorAction Stop
    'Set-Variable'        = Get-Command -Name Set-Variable        -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Sort-Object'         = Get-Command -Name Sort-Object         -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Split-Path'          = Get-Command -Name Split-Path          -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Start-Sleep'         = Get-Command -Name Start-Sleep         -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Test-Path'           = Get-Command -Name Test-Path           -Module Microsoft.PowerShell.Management -CommandType Cmdlet -ErrorAction Stop
    'Where-Object'        = Get-Command -Name Where-Object        -Module Microsoft.PowerShell.Core       -CommandType Cmdlet -ErrorAction Stop
    'Write-Error'         = Get-Command -Name Write-Error         -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Write-Progress'      = Get-Command -Name Write-Progress      -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Write-Verbose'       = Get-Command -Name Write-Verbose       -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
    'Write-Warning'       = Get-Command -Name Write-Warning       -Module Microsoft.PowerShell.Utility    -CommandType Cmdlet -ErrorAction Stop
}

# little sanity check to make sure we don't blow up a system with a typo up there
# (not that I've EVER done that by, for example, mapping New-Item to Remove-Item...)

foreach ($keyValuePair in $script:SafeCommands.GetEnumerator())
{
    if ($keyValuePair.Key -ne $keyValuePair.Value.Name)
    {
        throw "SafeCommands entry for $($keyValuePair.Key) does not hold a reference to the proper command."
    }
}

$moduleRoot = & $script:SafeCommands['Split-Path'] -Path $MyInvocation.MyCommand.Path

"$moduleRoot\Functions\*.ps1", "$moduleRoot\Functions\Assertions\*.ps1" |
& $script:SafeCommands['Resolve-Path'] |
& $script:SafeCommands['Where-Object'] { -not ($_.ProviderPath.ToLower().Contains(".tests.")) } |
& $script:SafeCommands['ForEach-Object'] { . $_.ProviderPath }

function Invoke-Pester {
<#
.SYNOPSIS
Invokes Pester to run all tests (files containing *.Tests.ps1) recursively under the Path
 
.DESCRIPTION
Upon calling Invoke-Pester, all files that have a name containing
"*.Tests.ps1" will have the tests defined in their Describe blocks
executed. Invoke-Pester begins at the location of Path and
runs recursively through each sub directory looking for
"*.Tests.ps1" files containing tests. If a TestName is provided,
Invoke-Pester will only run tests that have a describe block with a
matching name. By default, Invoke-Pester will end the test run with a
simple report of the number of tests passed and failed output to the
console. One may want pester to "fail a build" in the event that any
tests fail. To accomodate this, Invoke-Pester will return an exit
code equal to the number of failed tests if the EnableExit switch is
set. Invoke-Pester will also write a NUnit style log of test results
if the OutputXml parameter is provided. In these cases, Invoke-Pester
will write the result log to the path provided in the OutputXml
parameter.
 
Optionally, Pester can generate a report of how much code is covered
by the tests, and information about any commands which were not
executed.
 
.PARAMETER Script
This parameter indicates which test scripts should be run.
This parameter may be passed simple strings (wildcards are allowed), or hashtables containing Path, Arguments and Parameters keys.
If hashtables are used, the Parameters key must refer to a hashtable, and the Arguments key must refer to an array; these will be splatted to the test script(s) indicated in the Path key.
 
Note: If the path contains any wildcards, or if it refers to a directory, then Pester will search for and execute all test scripts named *.Tests.ps1 in the target path; the search is recursive. If the path contains no wildcards and refers to a file, Pester will just try to execute that file regardless of its name.
 
Aliased to 'Path' and 'relative_path' for backwards compatibility.
 
.PARAMETER TestName
Informs Invoke-Pester to only run Describe blocks that match this name.
 
.PARAMETER EnableExit
Will cause Invoke-Pester to exit with a exit code equal to the number of failed tests once all tests have been run. Use this to "fail" a build when any tests fail.
 
.PARAMETER OutputXml
The path where Invoke-Pester will save a NUnit formatted test results log file. If this path is not provided, no log will be generated.
 
.PARAMETER Tag
Informs Invoke-Pester to only run Describe blocks tagged with the tags specified. Aliased 'Tags' for backwards compatibility.
 
.PARAMETER ExcludeTag
Informs Invoke-Pester to not run blocks tagged with the tags specified.
 
.PARAMETER PassThru
Returns a Pester result object containing the information about the whole test run, and each test.
 
.PARAMETER CodeCoverage
Instructs Pester to generate a code coverage report in addition to running tests. You may pass either hashtables or strings to this parameter.
If strings are used, they must be paths (wildcards allowed) to source files, and all commands in the files are analyzed for code coverage.
By passing hashtables instead, you can limit the analysis to specific lines or functions within a file.
Hashtables must contain a Path key (which can be abbreviated to just "P"), and may contain Function (or "F"), StartLine (or "S"), and EndLine ("E") keys to narrow down the commands to be analyzed.
If Function is specified, StartLine and EndLine are ignored.
If only StartLine is defined, the entire script file starting with StartLine is analyzed.
If only EndLine is present, all lines in the script file up to and including EndLine are analyzed.
Both Function and Path (as well as simple strings passed instead of hashtables) may contain wildcards.
 
.PARAMETER Strict
Makes Pending and Skipped tests to Failed tests. Useful for continuous integration where you need to make sure all tests passed.
 
.PARAMETER Quiet
Disables the output Pester writes to screen. No other output is generated unless you specify PassThru, or one of the Output parameters.
 
.PARAMETER PesterOption
Sets advanced options for the test execution. Enter a PesterOption object, such as one that you create by using the New-PesterOption cmdlet, or a hash table in which the keys are option names and the values are option values.
For more information on the options available, see the help for New-PesterOption.
 
.Example
Invoke-Pester
 
This will find all *.Tests.ps1 files and run their tests. No exit code will be returned and no log file will be saved.
 
.Example
Invoke-Pester -Script ./tests/Utils*
 
This will run all tests in files under ./Tests that begin with Utils and alsocontains .Tests.
 
.Example
Invoke-Pester -Script @{ Path = './tests/Utils*'; Parameters = @{ NamedParameter = 'Passed By Name' }; Arguments = @('Passed by position') }
 
Executes the same tests as in Example 1, but will run them with the equivalent of the following command line: & $testScriptPath -NamedParameter 'Passed By Name' 'Passed by position'
 
.Example
Invoke-Pester -TestName "Add Numbers"
 
This will only run the Describe block named "Add Numbers"
 
.Example
Invoke-Pester -EnableExit -OutputXml "./artifacts/TestResults.xml"
 
This runs all tests from the current directory downwards and writes the results according to the NUnit schema to artifacts/TestResults.xml just below the current directory. The test run will return an exit code equal to the number of test failures.
 
.Example
Invoke-Pester -EnableExit -OutputFile "./artifacts/TestResults.xml" -OutputFormat NUnitxml
 
This runs all tests from the current directory downwards and writes the results to an output file and NUnitxml output format
 
.EXAMPLE
Invoke-Pester -CodeCoverage 'ScriptUnderTest.ps1'
 
Runs all *.Tests.ps1 scripts in the current directory, and generates a coverage report for all commands in the "ScriptUnderTest.ps1" file.
 
.EXAMPLE
Invoke-Pester -CodeCoverage @{ Path = 'ScriptUnderTest.ps1'; Function = 'FunctionUnderTest' }
 
Runs all *.Tests.ps1 scripts in the current directory, and generates a coverage report for all commands in the "FunctionUnderTest" function in the "ScriptUnderTest.ps1" file.
 
.EXAMPLE
Invoke-Pester -CodeCoverage @{ Path = 'ScriptUnderTest.ps1'; StartLine = 10; EndLine = 20 }
 
Runs all *.Tests.ps1 scripts in the current directory, and generates a coverage report for all commands on lines 10 through 20 in the "ScriptUnderTest.ps1" file.
 
.LINK
Describe
about_pester
New-PesterOption
 
#>

    [CmdletBinding(DefaultParameterSetName = 'LegacyOutputXml')]
    param(
        [Parameter(Position=0,Mandatory=0)]
        [Alias('Path', 'relative_path')]
        [object[]]$Script = '.',

        [Parameter(Position=1,Mandatory=0)]
        [Alias("Name")]
        [string[]]$TestName,

        [Parameter(Position=2,Mandatory=0)]
        [switch]$EnableExit,

        [Parameter(Position=3,Mandatory=0, ParameterSetName = 'LegacyOutputXml')]
        [string]$OutputXml,

        [Parameter(Position=4,Mandatory=0)]
        [Alias('Tags')]
        [string[]]$Tag,

        [string[]]$ExcludeTag,

        [switch]$PassThru,

        [object[]] $CodeCoverage = @(),

        [Switch]$Strict,

        [Parameter(Mandatory = $true, ParameterSetName = 'NewOutputSet')]
        [string] $OutputFile,

        [Parameter(Mandatory = $true, ParameterSetName = 'NewOutputSet')]
        [ValidateSet('LegacyNUnitXml', 'NUnitXml')]
        [string] $OutputFormat,

        [Switch]$Quiet,

        [object]$PesterOption
    )

    if ($PSBoundParameters.ContainsKey('OutputXml'))
    {
        & $script:SafeCommands['Write-Warning'] 'The -OutputXml parameter has been deprecated; please use the new -OutputFile and -OutputFormat parameters instead. To get the same type of export that the -OutputXml parameter currently provides, use an -OutputFormat of "LegacyNUnitXml".'

        & $script:SafeCommands['Start-Sleep'] -Seconds 2

        $OutputFile = $OutputXml
        $OutputFormat = 'LegacyNUnitXml'
    }

    $script:mockTable = @{}

    $pester = New-PesterState -TestNameFilter $TestName -TagFilter ($Tag -split "\s") -ExcludeTagFilter ($ExcludeTag -split "\s") -SessionState $PSCmdlet.SessionState -Strict:$Strict -Quiet:$Quiet -PesterOption $PesterOption
    Enter-CoverageAnalysis -CodeCoverage $CodeCoverage -PesterState $pester

    Write-Screen "`r`n`r`n`r`n`r`n"

    $invokeTestScript = {
        param (
            [Parameter(Position = 0)]
            [string] $Path,

            [object[]] $Arguments = @(),
            [System.Collections.IDictionary] $Parameters = @{}
        )

        & $Path @Parameters @Arguments
    }

    Set-ScriptBlockScope -ScriptBlock $invokeTestScript -SessionState $PSCmdlet.SessionState

    $testScripts = @(ResolveTestScripts $Script)

    foreach ($testScript in $testScripts)
    {
        try
        {
            do
            {
                & $invokeTestScript -Path $testScript.Path -Arguments $testScript.Arguments -Parameters $testScript.Parameters
            } until ($true)
        }
        catch
        {
            $firstStackTraceLine = $_.ScriptStackTrace -split '\r?\n' | & $script:SafeCommands['Select-Object'] -First 1
            $pester.AddTestResult("Error occurred in test script '$($testScript.Path)'", "Failed", $null, $_.Exception.Message, $firstStackTraceLine, $null, $null, $_)

            # This is a hack to ensure that XML output is valid for now. The test-suite names come from the Describe attribute of the TestResult
            # objects, and a blank name is invalid NUnit XML. This will go away when we promote test scripts to have their own test-suite nodes,
            # planned for v4.0
            $pester.TestResult[-1].Describe = "Error in $($testScript.Path)"

            $pester.TestResult[-1] | Write-PesterResult
        }
    }

    $pester | Write-PesterReport
    $coverageReport = Get-CoverageReport -PesterState $pester
    Show-CoverageReport -CoverageReport $coverageReport
    Exit-CoverageAnalysis -PesterState $pester

    if(& $script:SafeCommands['Get-Variable'] -Name OutputFile -ValueOnly -ErrorAction $script:IgnoreErrorPreference) {
        Export-PesterResults -PesterState $pester -Path $OutputFile -Format $OutputFormat
    }

    if ($PassThru) {
        #remove all runtime properties like current* and Scope
        $properties = @(
            "TagFilter","ExcludeTagFilter","TestNameFilter","TotalCount","PassedCount","FailedCount","SkippedCount","PendingCount","Time","TestResult"

            if ($CodeCoverage)
            {
                @{ Name = 'CodeCoverage'; Expression = { $coverageReport } }
            }
        )

        $pester | & $script:SafeCommands['Select-Object'] -Property $properties
    }

    if ($EnableExit) { Exit-WithCode -FailedCount $pester.FailedCount }
}

function New-PesterOption
{
<#
.SYNOPSIS
   Creates an object that contains advanced options for Invoke-Pester
.PARAMETER IncludeVSCodeMarker
   When this switch is set, an extra line of output will be written to the console for test failures, making it easier
   for VSCode's parser to provide highlighting / tooltips on the line where the error occurred.
.INPUTS
   None
   You cannot pipe input to this command.
.OUTPUTS
   System.Management.Automation.PSObject
.LINK
   Invoke-Pester
#>


    [CmdletBinding()]
    param (
        [switch] $IncludeVSCodeMarker
    )

    return & $script:SafeCommands['New-Object'] psobject -Property @{
        IncludeVSCodeMarker = [bool]$IncludeVSCodeMarker
    }
}

function ResolveTestScripts
{
    param ([object[]] $Path)

    $resolvedScriptInfo = @(
        foreach ($object in $Path)
        {
            if ($object -is [System.Collections.IDictionary])
            {
                $unresolvedPath = Get-DictionaryValueFromFirstKeyFound -Dictionary $object -Key 'Path', 'p'
                $arguments      = @(Get-DictionaryValueFromFirstKeyFound -Dictionary $object -Key 'Arguments', 'args', 'a')
                $parameters     = Get-DictionaryValueFromFirstKeyFound -Dictionary $object -Key 'Parameters', 'params'

                if ($unresolvedPath -isnot [string] -or $unresolvedPath -notmatch '\S')
                {
                    throw 'When passing hashtables to the -Path parameter, the Path key is mandatory, and must contain a single string.'
                }

                if ($null -ne $parameters -and $parameters -isnot [System.Collections.IDictionary])
                {
                    throw 'When passing hashtables to the -Path parameter, the Parameters key (if present) must be assigned an IDictionary object.'
                }
            }
            else
            {
                $unresolvedPath = [string] $object
                $arguments      = @()
                $parameters     = @{}
            }

            if ($unresolvedPath -notmatch '[\*\?\[\]]' -and
                (& $script:SafeCommands['Test-Path'] -LiteralPath $unresolvedPath -PathType Leaf) -and
                (& $script:SafeCommands['Get-Item'] -LiteralPath $unresolvedPath) -is [System.IO.FileInfo])
            {
                $extension = [System.IO.Path]::GetExtension($unresolvedPath)
                if ($extension -ne '.ps1')
                {
                    & $script:SafeCommands['Write-Error'] "Script path '$unresolvedPath' is not a ps1 file."
                }
                else
                {
                    & $script:SafeCommands['New-Object'] psobject -Property @{
                        Path       = $unresolvedPath
                        Arguments  = $arguments
                        Parameters = $parameters
                    }
                }
            }
            else
            {
                # World's longest pipeline?

                & $script:SafeCommands['Resolve-Path'] -Path $unresolvedPath |
                & $script:SafeCommands['Where-Object'] { $_.Provider.Name -eq 'FileSystem' } |
                & $script:SafeCommands['Select-Object'] -ExpandProperty ProviderPath |
                & $script:SafeCommands['Get-ChildItem'] -Include *.Tests.ps1 -Recurse |
                & $script:SafeCommands['Where-Object'] { -not $_.PSIsContainer } |
                & $script:SafeCommands['Select-Object'] -ExpandProperty FullName -Unique |
                & $script:SafeCommands['ForEach-Object'] {
                    & $script:SafeCommands['New-Object'] psobject -Property @{
                        Path       = $_
                        Arguments  = $arguments
                        Parameters = $parameters
                    }
                }
            }
        }
    )

    # Here, we have the option of trying to weed out duplicate file paths that also contain identical
    # Parameters / Arguments. However, we already make sure that each object in $Path didn't produce
    # any duplicate file paths, and if the caller happens to pass in a set of parameters that produce
    # dupes, maybe that's not our problem. For now, just return what we found.

    $resolvedScriptInfo
}

function Get-DictionaryValueFromFirstKeyFound
{
    param ([System.Collections.IDictionary] $Dictionary, [object[]] $Key)

    foreach ($keyToTry in $Key)
    {
        if ($Dictionary.Contains($keyToTry)) { return $Dictionary[$keyToTry] }
    }
}

function Set-ScriptBlockScope
{
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $true)]
        [scriptblock]
        $ScriptBlock,

        [Parameter(Mandatory = $true, ParameterSetName = 'FromSessionState')]
        [System.Management.Automation.SessionState]
        $SessionState,

        [Parameter(Mandatory = $true, ParameterSetName = 'FromSessionStateInternal')]
        $SessionStateInternal
    )

    $flags = [System.Reflection.BindingFlags]'Instance,NonPublic'

    if ($PSCmdlet.ParameterSetName -eq 'FromSessionState')
    {
        $SessionStateInternal = $SessionState.GetType().GetProperty('Internal', $flags).GetValue($SessionState, $null)
    }

    [scriptblock].GetProperty('SessionStateInternal', $flags).SetValue($ScriptBlock, $SessionStateInternal, $null)
}

function Get-ScriptBlockScope
{
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $true)]
        [scriptblock]
        $ScriptBlock
    )

    $flags = [System.Reflection.BindingFlags]'Instance,NonPublic'
    [scriptblock].GetProperty('SessionStateInternal', $flags).GetValue($ScriptBlock, $null)
}

function SafeGetCommand
{
    <#
        .SYNOPSIS
        This command is used by Pester's Mocking framework. You do not need to call it directly.
    #>


    return $script:SafeCommands['Get-Command']
}

$snippetsDirectoryPath = "$PSScriptRoot\Snippets"
if ((& $script:SafeCommands['Test-Path'] -Path Variable:\psise) -and
    ($null -ne $psISE) -and
    ($PSVersionTable.PSVersion.Major -ge 3) -and
    (& $script:SafeCommands['Test-Path'] $snippetsDirectoryPath))
{
    Import-IseSnippet -Path $snippetsDirectoryPath
}

& $script:SafeCommands['Export-ModuleMember'] Describe, Context, It, In, Mock, Assert-VerifiableMocks, Assert-MockCalled, Set-TestInconclusive
& $script:SafeCommands['Export-ModuleMember'] New-Fixture, Get-TestDriveItem, Should, Invoke-Pester, Setup, InModuleScope, Invoke-Mock
& $script:SafeCommands['Export-ModuleMember'] BeforeEach, AfterEach, BeforeAll, AfterAll
& $script:SafeCommands['Export-ModuleMember'] Get-MockDynamicParameters, Set-DynamicParameterVariables
& $script:SafeCommands['Export-ModuleMember'] SafeGetCommand, New-PesterOption