Add FTP tests to GitHub workflow

.github/workflows/go.yml

@@ -44,6 +44,14 @@ jobs:
         go test -v -tags "ci backend" ./storage
       if: matrix.go-version == '1.14.x' && matrix.platform == 'ubuntu-latest'
 
+    - name: Storage FTP Backend Tests
+      env:
+        KNOXITE_FTP_URL: ${{ secrets.KNOXITE_FTP_URL }}
+      run: |
+        ./admin/setup_ftp_test_environment.sh
+        go test -v -tags "ci backend" ./storage
+      if: matrix.go-version == '1.14.x' && matrix.platform == 'ubuntu-latest'
+
     - name: Coverage
       env:
         COVERALLS_TOKEN: ${{ secrets.GITHUB_TOKEN }}

admin/setup_ftp_test_environment.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+#
+# knoxite
+#     Copyright (c) 2020, Christian Muehlhaeuser <muesli@gmail.com>
+#
+#   For license see LICENSE
+#
+
+FTPSERVER_VERSION="0.5"
+FTPSERVER_BINARY="/tmp/ftpserver"
+FTP_DIR="$HOME"/knoxite_ftp
+
+if [[ "$OSTYPE" == "linux-gnu" ]]; then
+    OS="linux"
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+    OS="darwin"
+fi
+
+# download ftpserver
+curl -L "https://github.com/fclairamb/ftpserver/releases/download/v${FTPSERVER_VERSION}/ftpserver-${OS}-amd64" --output ${FTPSERVER_BINARY}
+chmod +x ${FTPSERVER_BINARY}
+
+# create dirs
+mkdir -p "$FTP_DIR"
+
+# start FTP server
+/tmp/ftpserver -data "$FTP_DIR" &
+
+# wait for FTP server to boot up
+sleep 5