Travis: Check if generated code is up-to-date

Author: markus-wa

.travis.yml

@@ -19,6 +19,9 @@ install:
   - go mod download
 
 before_script:
+  # Install interface generator
+  - GO111MODULE=off go get github.com/vburenin/ifacemaker
+
   # Fetch refs for linter
   - git config remote.origin.fetch +refs/heads/*:refs/remotes/origin/*
   - git fetch
@@ -32,6 +35,11 @@ before_script:
 script:
   - go build ./...
 
+  # Make sure generated code is up-to-date
+  - go generate
+  - diff_output=$(git diff)
+  - if [[ "$diff_output" != "" ]]; then echo "Generated code is not up-to-date" && echo "$diff_output" && exit 1; fi
+
   # Lint changed code
   - if [[ "$TRAVIS_COMMIT_RANGE" != "" ]]; then commit_range=${TRAVIS_COMMIT_RANGE/.../..} && git diff $commit_range > /dev/null && base_rev=$commit_range || true; fi
   - if [[ "$base_rev" = "" ]]; then base_rev='origin/master'; fi && echo "Linting changes between/since $base_rev"