Simplify/fix join-path.

.vscode/tasks.json

@@ -0,0 +1,66 @@
+// Available variables which can be used inside of strings.
+// ${workspaceRoot}: the root folder of the team
+// ${file}: the current opened file
+// ${relativeFile}: the current opened file relative to workspaceRoot
+// ${fileBasename}: the current opened file's basename
+// ${fileDirname}: the current opened file's dirname
+// ${fileExtname}: the current opened file's extension
+// ${cwd}: the current working directory of the spawned process
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+	"version": "0.1.0",
+
+	// Start PowerShell
+    "windows": {
+        "command": "${env.windir}\\sysnative\\windowspowershell\\v1.0\\PowerShell.exe"
+    },
+    "linux": {
+        "command": "/usr/bin/powershell"
+    },
+    "osx": {
+        "command": "/usr/local/bin/powershell"
+    },
+
+	// The command is a shell script
+	"isShellCommand": true,
+
+	// Show the output window always
+	"showOutput": "always",
+
+    "args": [
+        "-NoProfile", "-ExecutionPolicy", "Bypass"
+    ],
+
+    // Associate with test task runner
+    "tasks": [
+        {
+            "taskName": "Test",
+            "suppressTaskName": true,
+            "isTestCommand": true,
+            "showOutput": "always",
+            "args": [
+                "Write-Host 'Invoking Pester'; Invoke-Pester test -PesterOption @{IncludeVSCodeMarker=$true};",
+                "Invoke-Command { Write-Host 'Completed Test task in task runner.' }"
+            ],
+            "problemMatcher": [
+                {
+                    "owner": "powershell",
+                    "fileLocation": ["absolute"],
+                    "severity": "error",
+                    "pattern": [
+                        {
+                            "regexp": "^\\s*(\\[-\\]\\s*.*?)(\\d+)ms\\s*$",
+                            "message": 1
+                        },
+                        {
+                            "regexp": "^\\s+at\\s+[^,]+,\\s*(.*?):\\s+line\\s+(\\d+)$",
+                            "file": 1,
+                            "line": 2
+                        }
+                    ]
+                }
+            ]
+        }
+	]
+}

GitUtils.ps1

@@ -394,10 +394,9 @@ function Start-SshAgent([switch]$Quiet) {
     Add-SshKey
 }
 
-function Get-SshPath($File = 'id_rsa')
-{
-    $home = Resolve-Path (Invoke-NullCoalescing $Env:HOME ~)
-    Resolve-Path (Join-Path $home ".ssh\$File") -ErrorAction SilentlyContinue 2> $null
+function Get-SshPath($File = 'id_rsa') {
+    # Avoid paths with path separator char since it is different on Linux/macOS.
+    Join-Path $Home (Join-Path .ssh $File)
 }
 
 <#

test/Shared.ps1

@@ -0,0 +1 @@
+Import-Module $PSScriptRoot\..\posh-git.psd1

test/Ssh.Tests.ps1

@@ -0,0 +1,12 @@
+. $PSScriptRoot\Shared.ps1
+
+Describe 'SSH Function Tests' {
+    Context 'Get-SshPath Tests' {
+        It 'Returns the correct default path' {
+            Get-SshPath | Should BeExactly $Home\.ssh\id_rsa
+        }
+        It 'Returns the correct path given a filename' {
+            Get-SshPath mykey | Should BeExactly $Home\.ssh\mykey
+        }
+    }
+}