add unit test to test behaviour on start stop

Signed-off-by: Utkarsh Mani Tripathi <utkarsh.tripathi@mayadata.io>

.travis.yml

@@ -38,10 +38,11 @@ script:
    - make
    - hack/verify-gofmt.sh
    - go test -v ./pkg/...
+   - go test -v ./mock/...
    - dd if=/dev/zero of=/var/tmp/disk.img bs=1024 count=102400
    - mkdir ${HOME}/.gotgt
    - echo ${TGT_CFG} > ${HOME}/.gotgt/config.json
-   - ./_output/cmd/bin/gotgt daemon --log debug 1>log.txt 2>&1 &
+   - ./_output/cmd/bin/gotgt daemon --log debug 1>/dev/null 2>&1 &
    # libiscsi test
    - mkdir ${HOME}/libiscsi
    - git clone https://github.com/gostor/libiscsi ${HOME}/libiscsi
@@ -100,5 +101,4 @@ script:
    - sudo mkdir -p /var/tmp/test
    - sudo mount /dev/sdb1 /var/tmp/test
    - sudo ls -lh /var/tmp/test/
-   - cat log.txt