Move test data to new repo

Author: TcM1911

.github/workflows/go.yml

@@ -12,21 +12,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: true
 
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
         go-version: 1.16
 
-    - name: Download test resources
-      run: ./testdata/helper.sh fetch
-    
     - name: Build
       run: go build -o a
 
     - name: Test
       run: go test -timeout 1800s -v -race -coverprofile=coverage.txt -covermode=atomic
-      
+
     - name: Codecov
       # You may pin to the exact commit or the version.
       # uses: codecov/codecov-action@29386c70ef20e286228c72b668a06fd0e8399192

.gitignore

@@ -11,6 +11,5 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 *.swp
-testdata/gold/*
 
-.vscode/*
+.vscode/*

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "testdata/gold"]
+	path = testdata/gold
+	url = https://github.com/goretk/testdata.git

CONTRIBUTING.md

@@ -11,13 +11,9 @@ information.
 
 A lot of tests in the library requires test resources. Due to the total size of
 these files, they are not included with the source code. The `testdata` folder
-contains a helper script that can be used to either download the resource files
-or to build them. For building the resources locally `docker` is used.
-
-Download latest collection of test resources:
-```
-./testdata/helper.sh fetch
-```
+contains a helper script that can be used to build them. For building the
+resources locally `docker` is used. They are also stored in a separate repo that
+can be accessed by running: `git submodule update --init --recursive`
 
 Build missing resources:
 ```