Add automated test workflow

While there needs to be a greater repository of tests built up,
this does provide assurance over the existing codebase and
encouragement for adding more tests.

Co-authored-by: Chris Bandy <[email protected]>

Author: jkatz

.github/workflows/test.yaml

@@ -0,0 +1,17 @@
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+
+jobs:
+  go-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
+        with:
+          go-version: 1.x
+      - run: PGOROOT=$(pwd) go test ./...