Add TestLibListDoesNotIncludeEmptyLibraries to lib_test.go

Author: MatteoPologruto

Diff for: internal/integrationtest/lib/lib_test.go

@@ -1535,3 +1535,20 @@ func TestLibQueryParameters(t *testing.T) {
 	require.Contains(t, string(stdout),
 		"Starting download                             \x1b[36murl\x1b[0m=\"https://downloads.arduino.cc/libraries/github.com/firmata/Firmata-2.5.9.zip?query=upgrade-builtin\"\n")
 }
+
+func TestLibListDoesNotIncludeEmptyLibraries(t *testing.T) {
+	env, cli := integrationtest.CreateArduinoCLIWithEnvironment(t)
+	defer env.CleanUp()
+
+	_, _, err := cli.Run("lib", "update-index")
+	require.NoError(t, err)
+
+	// Create a library that does not have neither a library.properties nor a ".h" fil
+	emptyLib := cli.SketchbookDir().Join("libraries", "empty")
+	require.NoError(t, emptyLib.MkdirAll())
+
+	// Check the output of lib list is empty
+	stdout, _, err := cli.Run("lib", "list", "--format", "json")
+	require.NoError(t, err)
+	requirejson.Empty(t, stdout)
+}