Removed should operators in test hab install script for windows

Signed-off-by: Sougata Bhattacharjee <sougatab@progress.com>

components/hab/tests/test_install_script.ps1

@@ -1,31 +1,49 @@
 Describe "Install habitat using install.ps1" {
     It "can install the latest version of Habitat" {
         components/hab/install.ps1
-        $LASTEXITCODE | Should -Be 0
-        (Get-Command hab).Path | Should -Be "C:\ProgramData\Habitat\hab.exe"
+        if ($LASTEXITCODE -ne 0) {
+            throw "Installation failed with exit code $LASTEXITCODE"
+        }
+
+        $path = (Get-Command hab).Path
+        if ($path -ne "C:\ProgramData\Habitat\hab.exe") {
+            throw "Expected Habitat path 'C:\ProgramData\Habitat\hab.exe' but got '$path'"
+        }
     }
 
     It "can install a specific version of Habitat" {
         components/hab/install.ps1 -v 0.90.6
-        $LASTEXITCODE | Should -Be 0
+        if ($LASTEXITCODE -ne 0) {
+            throw "Installation failed with exit code $LASTEXITCODE"
+        }
 
         $result = hab --version
-        $result | Should -Match "hab 0.90.6/*"
+        if ($result -notmatch "hab 0\.90\.6/.*") {
+            throw "Expected version 'hab 0.90.6/*' but got '$result'"
+        }
     }
 
     It "can install a specific version of legacy Habitat package" {
         components/hab/install.ps1 -v 0.79.1
-        $LASTEXITCODE | Should -Be 0
+        if ($LASTEXITCODE -ne 0) {
+            throw "Installation failed with exit code $LASTEXITCODE"
+        }
 
         $result = hab --version
-        $result | Should -Match "hab 0.79.1/*"
+        if ($result -notmatch "hab 0\.79\.1/.*") {
+            throw "Expected version 'hab 0.79.1/*' but got '$result'"
+        }
     }
 
     It "ignores release when installing from packages.chef.io" {
         components/hab/install.ps1 -v "0.90.6/20191112141314"
-        $LASTEXITCODE | Should -Be 0
+        if ($LASTEXITCODE -ne 0) {
+            throw "Installation failed with exit code $LASTEXITCODE"
+        }
 
         $result = hab --version
-        $result | Should -Match "hab 0.90.6/*"
+        if ($result -notmatch "hab 0\.90\.6/.*") {
+            throw "Expected version 'hab 0.90.6/*' but got '$result'"
+        }
     }
 }