Add simple smoke-test (#240)

.gitignore

@@ -6,3 +6,5 @@ test/tmp
 *.log
 .vscode
 .nyc_output
+tmp
+babel-preset-env-*.tgz

.npmignore

@@ -6,3 +6,6 @@ scripts
 .travis.yml
 codecov.yml
 yarn.lock
+.nyc_output
+.vscode
+babel-preset-env-*.tgz

.travis.yml

@@ -27,7 +27,8 @@ install:
   - $PKG_CMD install
 script:
   - 'if [ -n "${LINT-}" ]; then $PKG_CMD run lint ; fi'
-  - 'if [ -z "${LINT-}" ]; then $PKG_CMD run test-ci ; fi'
+  - 'if [ -n "${SMOKE_TEST-}" ]; then node scripts/smoke-test.js ; fi'
+  - 'if [ -z "${LINT-}" ] && [ -z "${SMOKE_TEST-}" ]; then $PKG_CMD run test-ci ; fi'
 matrix:
   fast_finish: true
   exclude:
@@ -38,5 +39,7 @@ matrix:
   include:
     - node_js: "node"
       env: LINT=true PKG_CMD="npm"
+    - node_js: "node"
+      env: SMOKE_TEST=true PKG_CMD="npm"
 
-after_success: 'if [ -z "${LINT-}" ]; then npm run coverage-ci ; fi'
+after_success: 'if [ -z "${LINT-}" ] && [ -z "${SMOKE_TEST-}" ]; then npm run coverage-ci ; fi'

scripts/smoke-test.js

@@ -0,0 +1,69 @@
+const fs = require("fs-extra");
+const execSync = require("child_process").execSync;
+const path = require("path");
+const pkg = require("../package.json");
+
+let errorOccurred = false;
+
+const tempFolderPath = path.join(__dirname, "../tmp");
+const packPath = path.join(__dirname, `../babel-preset-env-${pkg.version}.tgz`);
+
+try {
+  console.log("Creating package");
+  execSync("npm pack");
+
+  console.log("Setting up smoke test");
+  fs.ensureDir(tempFolderPath);
+
+  fs.writeFileSync(
+    path.join(tempFolderPath, "package.json"),
+    `
+{
+  "name": "babel-preset-env-smoke-test",
+  "private": true,
+  "version": "1.0.0",
+  "scripts": {
+    "build": "babel index.js --out-file index.es6"
+  },
+  "dependencies": {
+    "babel-cli": "*",
+    "babel-preset-env": "${packPath}"
+  }
+}
+  `);
+
+  fs.writeFileSync(
+    path.join(tempFolderPath, ".babelrc"),
+    `
+{
+  "presets": [
+    ["env", {
+      modules: false,
+      useBuiltIns: true
+    }]
+  ]
+}
+    `
+  );
+
+  fs.writeFileSync(
+    path.join(tempFolderPath, "index.js"),
+    `
+import "babel-polyfill";
+1 ** 2;
+    `
+  );
+
+  process.chdir(tempFolderPath);
+
+  console.log("Running smoke test");
+  execSync("npm install && npm run build");
+} catch (e) {
+  errorOccurred = true;
+}
+
+console.log("Cleaning up");
+fs.removeSync(tempFolderPath);
+fs.removeSync(packPath);
+
+process.exit(errorOccurred ? 1 : 0);