functest: add simple gc test

Fixes #274

Signed-off-by: Ruslan Kuprieiev <[email protected]>

functest/run.sh

@@ -10,6 +10,7 @@ TESTS+=" test-sync.sh"
 TESTS+=" test-repro-code.sh"
 TESTS+=" test-merge.sh"
 TESTS+=" test-checkout.sh"
+TESTS+=" test-gc.sh"
 
 for t in $TESTS; do
 	rm -rf $TEST_REPO

functest/test-gc.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+set -e
+
+source common.sh
+
+dvc_create_repo
+
+ORIG_CACHE=$(ls .dvc/cache)
+
+DUMMY_CACHE+=" .dvc/cache/1"
+DUMMY_CACHE+=" .dvc/cache/2"
+DUMMY_CACHE+=" .dvc/cache/3"
+
+dvc_info "Create dummy cache files"
+touch $DUMMY_CACHE
+if [ $? -ne 0 ]; then
+	dvc_error "Failed to create cache files"
+	dvc_fail
+fi
+
+dvc_info "Run 'dvc gc'"
+dvc gc
+
+dvc_info "Check that we didn't break good cache"
+dvc_check_dirs ".dvc/cache"
+pushd .dvc/cache
+dvc_check_files $ORIG_CACHE
+popd
+
+dvc_info "Check that dummy cache files were removed"
+for d in $DUMMY_CACHE; do
+	if [ -f $d ]; then
+		dvc_error "Dummy cache file $d was not removed by gc"
+		dvc_fail
+	fi
+done
+
+dvc_pass