Add tests and fix sparse volumes

Author: ashald

README.md

@@ -4,10 +4,6 @@ https://kernelnewbies.org/Linux_4.4#Faster_and_leaner_loop_device_with_Direct_I.
 
 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6
 
-```
-chown -1:-1
-
-```
 
 ### Sparse
 
@@ -25,6 +21,5 @@ go mod tidy
 ```
 
 ## Test
-ext4/xfs - sparse/regular
 on ext4/xfs vs ext3
 not enough space

driver/driver.go

@@ -81,7 +81,7 @@ func (d Driver) Create(req *v.CreateRequest) error {
 	}
 
 	sparse := false
-	sparseStr, sparsePresent := req.Options["sparsePresent"]
+	sparseStr, sparsePresent := req.Options["sparse"]
 	if sparsePresent {
 		sparse, err = strconv.ParseBool(sparseStr)
 		if err != nil {

manager/manager.go

@@ -160,7 +160,7 @@ func (m Manager) Create(name string, sizeInBytes int64, sparse bool, fs string,
 		if err != nil {
 			_ = os.Remove(dataFilePath) // attempt to cleanup
 			return errors.Wrapf(err,
-				"Error creating volume '%s' - cannot allocate '%s' bytes",
+				"Error creating volume '%s' - error creating data file",
 				name, sizeInBytes)
 		}
 	} else {

tests/run.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+result=0
+
+for suite in $(dirname ${0})/test_*; do
+    echo "--- Executing '$(basename ${suite} .sh)' ---"
+
+    ( cd $(dirname "${suite}"); ./"$(basename ${suite})" 2>&1; )
+
+    test "${result}" -eq 0 -a $? -eq 0
+    result=$?
+
+    echo
+done
+
+echo -n "$(tput bold) ---> "
+
+if [[ ${result} -eq 0 ]]; then
+    echo "$(tput setaf 2)ALL TESTS PASSED"
+else
+    echo "$(tput setaf 1)SOME TESTS FAILED"
+fi
+
+exit ${result}