Use $here to avoid 'cd $(PESTER)'

Per the Pester examples: https://github.com/pester/Pester/blob/master/Examples/Calculator/Add-Numbers.Tests.ps1

Makefile

@@ -57,7 +57,7 @@ test-hashbang:
 ## - we cd because some tests rely on the current working directory
 PESTER=$(MONAD)/src/pester-tests
 test-pester:
-	$(POWERSHELL_SIMPLE) 'cd $(PESTER); $$env:TEMP="/tmp"; invoke-pester -OutputFile $(MONAD)/pester-tests.xml -OutputFormat NUnitXml'
+	$(POWERSHELL_SIMPLE) '$$env:TEMP="/tmp"; invoke-pester $(PESTER) -OutputFile $(MONAD)/pester-tests.xml -OutputFormat NUnitXml'
 
 ## Pester self-tests
 ## - results in pester-self-tests.xml

src/pester-tests/Get-Item.Tests.ps1

@@ -1,25 +1,22 @@
-Describe "Get-Item" {
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+
+Describe "Get-Item" {
     It "Should list all the items in the current working directory when asterisk is used" {
-        (Get-Item *).GetType().BaseType | Should Be 'array'
-        (Get-Item *).GetType().Name | Should Be 'Object[]'
+        (Get-Item $here/*).GetType().BaseType | Should Be 'array'
+        (Get-Item $here/*).GetType().Name | Should Be 'Object[]'
     }
 
     It "Should return the name of the current working directory when a dot is used" {
-        (Get-Item .).GetType().BaseType | Should Be 'System.IO.FileSystemInfo'
-        (Get-Item .).Name | Should Be 'pester-tests'
+        (Get-Item $here).GetType().BaseType | Should Be 'System.IO.FileSystemInfo'
+        (Get-Item $here).Name | Should Be 'pester-tests'
     }
 
     It "Should return the proper Name and BaseType for directory objects vs file system objects" {
-        (Get-Item .).GetType().Name | Should Be 'DirectoryInfo'
-        (Get-Item ./Get-Item.Tests.ps1).GetType().Name | Should Be 'FileInfo'
-    }
-
-    It "Should return a different directory when a path argument is used" {
-        (Get-Item /usr/bin) | Should Not BeNullOrEmpty
-        (Get-Item ..) | Should Not BeNullOrEmpty
+        (Get-Item $here).GetType().Name | Should Be 'DirectoryInfo'
+        (Get-Item $here/Get-Item.Tests.ps1).GetType().Name | Should Be 'FileInfo'
     }
 
     It "Should have mode flags set" {
-        ls / | foreach-object { $_.Mode | Should Not BeNullOrEmpty }
+        ls $here | foreach-object { $_.Mode | Should Not BeNullOrEmpty }
     }
 }

src/pester-tests/Get-ItemProperty.Tests.ps1

@@ -1,6 +1,8 @@
-Describe "Get-ItemProperty" {
-    $currentDirectory = Split-Path . -Leaf
-    $parentDirectory  = Split-Path .. -Leaf
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+
+Describe "Get-ItemProperty" {
+    $currentDirectory = Split-Path $here -Leaf
+    $parentDirectory  = Split-Path $here/.. -Leaf
     if (Test-Path /tmp)
     {
         $tempDirectory = "/tmp/testfolder"
@@ -18,15 +20,11 @@
     New-Item $testfile -ItemType file -Force
 
     It "Should be able to be called on in the current directory" {
-        { Get-ItemProperty . } | Should Not Throw
-
-        $(Get-ItemProperty .).Name | Should Be $currentDirectory
+        $(Get-ItemProperty $here).Name | Should Be $currentDirectory
     }
 
     It "Should be able to be called on a parent directory" {
-        { Get-ItemProperty .. } | Should Not Throw
-
-        (Get-ItemProperty ..).Name | Should Be $parentDirectory
+        (Get-ItemProperty $here/..).Name | Should Be $parentDirectory
     }
 
     It "Should be able to be called on a directory using the path switch" {

src/pester-tests/Import-Csv.Tests.ps1

@@ -1,5 +1,7 @@
-Describe "Import-Csv" {
-    $testCsv = "./assets/TestCsv.csv"
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+
+Describe "Import-Csv" {
+    $testCsv = "$here/assets/TestCsv.csv"
 
     It "Should be able to call without error" {
         { Import-Csv $testCsv } | Should Not Throw

src/pester-tests/Select-Object.Tests.ps1

@@ -1,4 +1,5 @@
-. ./Test-Mocks.ps1
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+. "$here/Test-Mocks.ps1"
 
 Describe "Select-Object" {
     BeforeEach {

src/pester-tests/Set-PSBreakpoint.Tests.ps1

@@ -1,5 +1,7 @@
-Describe "Set-PSBreakpoint" {
-    New-Variable -Name script -Value ./assets/testablescript.ps1 -Scope Global
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+
+Describe "Set-PSBreakpoint" {
+    New-Variable -Name script -Value $here/assets/testablescript.ps1 -Scope Global
 
     It "Should be able to called with script and line parameters without error " {
         { Set-PSBreakpoint -Script $script -Line 1 } | Should Not Throw