add snap tests

- fixes iterative#2954

.travis.yml

@@ -89,7 +89,7 @@ jobs:
     - sudo /snap/bin/lxd init --auto
     install:
     script:
-    - sudo snapcraft --use-lxd
+    - ./scripts/build_snap.sh
     after_failure:
     - sudo journalctl -u snapd
 

scripts/build_package.sh

@@ -1,11 +1,10 @@
 #!/bin/bash
-
 set -e
 set -x
 
 if [ ! -d "dvc" ]; then
-    echo "Please run this script from repository root"
-    exit 1
+  echo "Please run this script from repository root"
+  exit 1
 fi
 
 echo 'PKG = "pip"' > dvc/utils/build.py
@@ -15,15 +14,15 @@ python setup.py bdist_wheel --universal
 
 # Make sure we have a correct version
 if [[ -n "$TRAVIS_TAG" ]]; then
-    pip uninstall -y dvc
-    if which dvc; then
-        echo "ERROR: dvc command still exists! Unable to verify dvc version."
-	exit 1
-    fi
-    pip install dist/dvc-*.whl
-    if [[ "$(dvc --version)" != "$TRAVIS_TAG" ]]; then
-        echo "ERROR: 'dvc --version'$(dvc -V) doesn't match '$TRAVIS_TAG'"
-        exit 1
-    fi
-    pip uninstall -y dvc
+  pip uninstall -y dvc
+  if which dvc; then
+    echo "ERROR: dvc command still exists! Unable to verify dvc version." >&2
+    exit 1
+  fi
+  pip install dist/dvc-*.whl
+  if [[ "$(dvc --version)" != "$TRAVIS_TAG" ]]; then
+    echo "ERROR: 'dvc --version'$(dvc -V) doesn't match '$TRAVIS_TAG'" >&2
+    exit 1
+  fi
+  pip uninstall -y dvc
 fi

scripts/build_snap.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+set -e
+set -x
+
+if [ ! -d "dvc" ]; then
+  echo "Please run this script from repository root"
+  exit 1
+fi
+
+sudo snapcraft --use-lxd
+
+# Make sure we have a correct version
+if [[ -n "$TRAVIS_TAG" ]]; then
+  pip uninstall -y dvc
+  if which dvc; then
+    echo "ERROR: dvc command still exists! Unable to verify dvc version." >&2
+    exit 1
+  fi
+  sudo snap install --dangerous --classic dvc_*.snap
+  if [[ "$(dvc --version)" != "$TRAVIS_TAG" ]]; then
+      echo "ERROR: 'dvc --version'$(dvc -V) doesn't match '$TRAVIS_TAG'" >&2
+      exit 1
+  fi
+  dvc version
+  dvc get https://github.com/iterative/dvc scripts/innosetup/dvc.ico
+  sudo snap remove dvc
+fi