Use HOME instead of HOSTNAME for environment tests

Because HOSTNAME can be tricky, but HOME is always set.

src/pester-tests/Environment-Variables.Tests.ps1

@@ -11,9 +11,13 @@
         $ENV:PATH | Should Match "/bin"
     }
 
+    It "Should have the correct HOME" {
+        $expected = /bin/bash -c "cd ~ && pwd"
+        $ENV:HOME | Should Be $expected
+    }
+
     It "Should be able to access the members of the environment variable" {
         $expected = /bin/bash -c "cd ~ && pwd"
-
         (Get-Item ENV:HOME).Value | Should Be $expected
     }
 
@@ -25,10 +29,4 @@
         $ENV:TESTENVIRONMENTVARIABLE | Should Be $expected
 
     }
-
-    It "Should have the correct HOSTNAME" {
-        $expected = /bin/hostname
-
-        $ENV:HOSTNAME | Should Be $expected
-    }
 }

src/pester-tests/Test-Path.Tests.ps1

@@ -108,7 +108,7 @@
     }
 
     It "Should return true if used on components other than filesystem objects" {
-        Test-Path Alias:\gci    | Should Be $true
-        Test-Path Env:\HOSTNAME | Should Be $true
+        Test-Path Alias:\gci | Should Be $true
+        Test-Path Env:\HOME | Should Be $true
     }
 }