meta: cross-compile tests for other geese

For now this is just darwin/windows, but we'll eventually add support
for {free,open}bsd

Signed-off-by: evalexpr <wilkinsphysics@gmail.com>

.github/workflows/linux.yml

@@ -40,6 +40,24 @@ jobs:
         GOARCH: amd64
       run: go build ./cmd/...
 
-    - name: Test build
+    - name: Cross-compile tests for other geese
+      run: ./test.sh
+
+    - name: Run tests on linux
       run: go test ./...
 
+    - uses: k0kubun/action-slack@v2.0.0
+      with:
+        payload: |
+          {
+            "attachments": [{
+              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
+                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
+                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
+              "color": "danger"
+            }]
+          }
+      env:
+        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+      if: failure() && github.event_name == 'push'
+