add e2e tests for Windows + PowerShell (#1177)

* add e2e tests for Windows + PowerShell

Signed-off-by: Jake Sanders <jsand@google.com>

.github/workflows/tests.yaml

@@ -91,6 +91,31 @@ jobs:
 
       - name: Run end-to-end tests
         run: ./test/e2e_test.sh
+
+  e2e-windows-powershell-tests:
+    name: Run PowerShell E2E tests
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '1.17.x'
+
+      # https://github.com/mvdan/github-actions-golang#how-do-i-set-up-caching-between-builds
+      - uses: actions/cache@v2
+        with:
+          # In order:
+          # * Module download cache
+          # * Build cache (Windows)
+          path: |
+            ~/go/pkg/mod
+            %LocalAppData%\go-build
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
+      - name: Run e2e_test.ps1
+        run: ./test/e2e_test.ps1
 
   license-check:
     name: license boilerplate check

test/e2e_test.ps1

@@ -0,0 +1,43 @@
+# Copyright 2021 The Sigstore Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+function New-TmpDir {
+    $parent = [System.IO.Path]::GetTempPath()
+    $name = [System.IO.Path]::GetRandomFileName()
+    New-Item -ItemType Directory -Path (Join-Path $parent $name)
+}
+
+make cosign
+$TmpDir = New-TmpDir
+Copy-Item -Path .\cosign -Destination (Join-Path $TmpDir cosign.exe)
+
+Push-Location $TmpDir
+
+# See if things blow up immediately
+.\cosign.exe version
+
+# Generate a random alphanumeric password for the private key
+$pass = Get-Random
+
+Write-Output $pass | .\cosign.exe generate-key-pair
+$signing_key = "cosign.key"
+$verification_key = "cosign.pub"
+
+$test_img = "gcr.io/distroless/static"
+Write-Output $pass | .\cosign.exe sign --key $signing_key --output-signature interactive.sig $test_img
+.\cosign.exe verify --key $verification_key --signature interactive.sig $test_img
+
+Pop-Location
+
+Write-Output "Success"