mro: integration tests setup

.travis.yml

@@ -1,9 +1,22 @@
 language: node_js
-node_js:
-  - 6
-  - 8
-  - 10
+
+matrix:
+  include:
+    - node_js: 6
+      env: ESLINT_VERSION=latest
+    - node_js: 8
+      env: ESLINT_VERSION=latest
+    - node_js: 10
+      env: ESLINT_VERSION=latest
+    - node_js: 12
+      env: ESLINT_VERSION=latest RUN_LINT=true RUN_INTEGRATION=true
+    - node_js: 12
+      env: ESLINT_VERSION=4.7 RUN_INTEGRATION=true
+    - node_js: 12
+      env: ESLINT_VERSION=6.0.0-alpha.1 RUN_INTEGRATION=true
+
 script:
-  - if node --version | grep -q v10; then npm run lint; fi
-  - npm install eslint@4.7 && npm test
-  - if ! node --version | grep -q v4; then npm install eslint@latest && npm test; fi
+  - if [[ $RUN_LINT = true ]]; then npm run lint; fi
+  - if [[ $RUN_INTEGRATION = true ]]; then ./tools/integration-tests.bash; fi
+  - npm install eslint@$ESLINT_VERSION
+  - npm test

tools/integration-tests.bash

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+set -euo pipefail
+
+ROOT=$(mktemp -d)
+
+function finish {
+  rm -rf "$ROOT"
+}
+
+trap finish EXIT
+
+REPO_PATH=$(pwd)
+ESLINT_VERSION=${ESLINT_VERSION:-latest}
+
+set -x
+cd $ROOT
+npm init -y
+npm install --save-dev eslint@$ESLINT_VERSION
+ln -s $REPO_PATH node_modules/eslint-plugin-html
+
+cat << EOF > index.html
+<script>
+console.log(1)
+</script>
+EOF
+
+cat << EOF > .eslintrc.js
+module.exports = {
+  plugins: ["html"],
+  rules: {
+    "no-console": "error",
+  },
+}
+EOF
+
+cat << EOF | diff -u <(npx eslint --format compact index.html 2>&1) -
+$(pwd)/index.html: line 2, col 1, Error - Unexpected console statement. (no-console)
+
+1 problem
+EOF
+
+echo "All passed"