Migrated TestCacheClean to cache_test.go and deleted test_cache.py

Author: MatteoPologruto

Diff for: internal/integrationtest/cache/cache_test.go

@@ -0,0 +1,50 @@
+// This file is part of arduino-cli.
+//
+// Copyright 2022 ARDUINO SA (http://www.arduino.cc/)
+//
+// This software is released under the GNU General Public License version 3,
+// which covers the main part of arduino-cli.
+// The terms of this license can be found at:
+// https://www.gnu.org/licenses/gpl-3.0.en.html
+//
+// You can be released from the requirements of the above licenses by purchasing
+// a commercial license. Buying such a license is mandatory if you want to
+// modify or otherwise use the software for commercial activities involving the
+// Arduino software without disclosing the source code of your own applications.
+// To purchase a commercial license, send an email to [email protected].
+
+package cache_test
+
+import (
+	"testing"
+
+	"github.com/arduino/arduino-cli/internal/integrationtest"
+	"github.com/arduino/go-paths-helper"
+	"github.com/stretchr/testify/require"
+	"go.bug.st/testsuite"
+)
+
+func TestCacheClean(t *testing.T) {
+	// Clean the cache under arduino caching file directory which is "<Arduino configure file path>/staging"
+
+	env := testsuite.NewEnvironment(t)
+	defer env.CleanUp()
+
+	cli := integrationtest.NewArduinoCliWithinEnvironment(env, &integrationtest.ArduinoCLIConfig{
+		ArduinoCLIPath:         paths.New("..", "..", "..", "arduino-cli"),
+		UseSharedStagingFolder: true,
+	})
+
+	_, _, err := cli.Run("cache", "clean")
+	require.NoError(t, err)
+
+	// Generate /staging directory
+	_, _, err = cli.Run("lib", "list")
+	require.NoError(t, err)
+
+	_, _, err = cli.Run("cache", "clean")
+	require.NoError(t, err)
+
+	staging := cli.DataDir().Join("staging")
+	require.False(t, staging.IsDir())
+}