Add Spectral validation

Validate snapshots of OpenAPI specifications with Spectral for errors.

Author: martincostello

.github/workflows/lint.yml

@@ -56,3 +56,17 @@ jobs:
         config: '.markdownlint.json'
         globs: |
           **/*.md
+
+    - name: Setup Node
+      uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
+      with:
+        node-version: '24.x'
+
+    - name: Install Spectral
+      run: npm install --global "@stoplight/spectral-cli@${SPECTRAL_VERSION}"
+      env:
+        # renovate: datasource=npm packageName=@stoplight/spectral-cli
+        SPECTRAL_VERSION: '6.15.0'
+
+    - name: Run Spectral
+      run: spectral lint "./test/Swashbuckle.AspNetCore.IntegrationTests/snapshots/*" --display-only-failures --fail-severity error --format github-actions

.spectral.yaml

@@ -0,0 +1 @@
+extends: ['spectral:oas']