Mask acceptance test flakiness with retries (#387)

.github/workflows/acctest.yml

@@ -33,6 +33,11 @@ jobs:
           go-version-file: "go.mod"
           check-latest: true
 
+      # The acceptance tests sometimes timeout for some unknown reason.
       - name: TF acceptance tests
-        timeout-minutes: 20
-        run: make testacc UNIFI_STDOUT=true UNIFI_VERSION=${{ matrix.unifi_download_url && 'beta' || matrix.unifi_version }} UNIFI_DOWNLOAD_URL=${{ matrix.unifi_download_url }}
+        uses: "nick-fields/retry@v2"
+        with:
+          timeout_minutes: 20
+          max_attempts: 3
+          command: make testacc TEST_TIMEOUT=1h UNIFI_STDOUT=true UNIFI_VERSION=${{ matrix.unifi_download_url && 'beta' || matrix.unifi_version }} UNIFI_DOWNLOAD_URL=${{ matrix.unifi_download_url }}
+          retry_on: "timeout"

Makefile

@@ -1,6 +1,7 @@
-TEST       ?= ./...
-TESTARGS   ?=
-TEST_COUNT ?= 1
+TEST         ?= ./...
+TESTARGS     ?=
+TEST_COUNT   ?= 1
+TEST_TIMEOUT ?= 10m
 
 .PHONY: default
 default: build
@@ -11,4 +12,4 @@ build:
 
 .PHONY: testacc
 testacc:
-	TF_ACC=1 go test $(TEST) -v -count=$(TEST_COUNT) $(TESTARGS)
+	TF_ACC=1 go test $(TEST) -v -count $(TEST_COUNT) -timeout $(TEST_TIMEOUT) $(TESTARGS)