Merge pull request digitalocean#117 from digitalocean/ci-codegeneration

ci: check for newly-generated, uncommitted code

Author: mdlayher

.travis.yml

@@ -7,6 +7,7 @@ before_script:
   - go get -d ./...
 script:
   - ./scripts/licensecheck.sh
+  - ./scripts/codegeneration.sh
   - go build ./...
   - golint -set_exit_status ./...
   - go vet ./...

scripts/codegeneration.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# Perform code generation and verify that the git repository is still clean,
+# meaning that any newly-generated code was added in this commit.
+go generate ./...
+
+GITSTATUS=$(git status --porcelain)
+if [ -z "$GITSTATUS" ]; then
+	exit 0
+fi
+
+echo -e "changes detected, run 'go generate ./...' and commit generated code in these files:\n"
+echo "$GITSTATUS"
+exit 1