quality: parameterize sdk and test data branches (#66)

* parameterize sdk and test data branches

* drop gcloud

Author: typotter

.github/workflows/test.yml

@@ -1,23 +1,41 @@
 name: Test SDK
+
+env:
+  SDK_BRANCH_NAME: ${{ inputs.sdk_branch  || github.head_ref || github.ref_name || 'main' }}
+  TEST_DATA_BRANCH_NAME: ${{ inputs.test_data_branch || 'main' }}
+
 on:
   pull_request:
     paths:
       - '**/*'
   push:
     branches:
       - main
+  workflow_dispatch:
 
+  workflow_call:
+    inputs:
+      test_data_branch:
+        type: string
+        description: The branch in sdk-test-data to target for testcase files
+        required: false
+        default: main
+      sdk_branch:
+        type: string
+        description: The branch of the SDK to test
+        required: false
 jobs:
   test-sdk:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+        with:
+          repository: Eppo-exp/golang-sdk
+          ref: ${{ env.SDK_BRANCH_NAME}}
       - uses: actions/setup-go@v3
         with:
           go-version: 1.19
       - name: Build
         run: go build -v ./...
-      - name: 'Set up GCP SDK for downloading test data'
-        uses: 'google-github-actions/setup-gcloud@v0'
       - name: Test
-        run: make test
+        run: make test branchName=${{env.TEST_DATA_BRANCH_NAME}}