test(gzip): add unit tests for gzip

Signed-off-by: Ramkumar Chinchani <[email protected]>

test/gzip.bats

@@ -0,0 +1,22 @@
+load helpers
+
+function setup() {
+    stacker_setup
+}
+
+function teardown() {
+    cleanup
+}
+
+@test "import tar" {
+  mkdir -p folder1
+  truncate -s 512k  folder1/file1
+  tar cvf test.tar folder1
+  cat > stacker.yaml <<EOF
+first:
+  from:
+    type: tar
+    url: test.tar
+EOF
+  stacker build
+}