Add simple E2E for Buidler (#438)

Author: cgewecke

.circleci/config.yml

@@ -73,13 +73,23 @@ jobs:
           name: MetaCoin E2E
           command: |
             ./scripts/run-metacoin.sh
+  e2e-buidler:
+    machine: true
+    steps:
+      - checkout
+      - <<: *step_install_nvm
+      - run:
+          name: Buidler E2E
+          command: |
+            ./scripts/run-buidler.sh
 workflows:
   version: 2
   build:
     jobs:
       - unit-test
       - e2e-zeppelin
       - e2e-metacoin
+      - e2e-buidler
   # TODO: re-enable.
   # At the moment we're using forks so this is pointless
   #nightly:

package.json

@@ -2,8 +2,7 @@
   "name": "solidity-coverage",
   "version": "0.7.0-beta.2",
   "description": "",
-  "main": "index.js",
-  "buidler": "dist/buidler.coverage.js",
+  "main": "dist/buidler.plugin.js",
   "bin": {
     "solidity-coverage": "./dist/bin.js"
   },

scripts/run-buidler.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+#
+# E2E CI: installs PR candidate on sc-forks/buidler-e2e (a simple example,
+# similar to Metacoin) and runs coverage
+#
+
+set -o errexit
+
+# Get rid of any caches
+sudo rm -rf node_modules
+echo "NVM CURRENT >>>>>" && nvm current
+
+# Use PR env variables (for forks) or fallback on local if PR not available
+SED_REGEX="s/[email protected]:/https:\/\/github.com\//"
+
+if [[ -v CIRCLE_PR_REPONAME ]]; then
+  PR_PATH="https://github.com/$CIRCLE_PR_USERNAME/$CIRCLE_PR_REPONAME#$CIRCLE_SHA1"
+else
+  PR_PATH=$(echo "$CIRCLE_REPOSITORY_URL#$CIRCLE_SHA1" | sudo sed "$SED_REGEX")
+fi
+
+echo "PR_PATH >>>>> $PR_PATH"
+
+# Install buidler e2e test
+git clone https://github.com/sc-forks/buidler-e2e.git
+cd buidler-e2e
+npm install
+
+# Install and run solidity-coverage @ PR
+npm install --save-dev $PR_PATH
+npx buidler coverage
+
+# Test that coverage/ was generated
+if [ ! -d "coverage" ]; then
+  echo "ERROR: no coverage folder was created."
+  exit 1
+fi

scripts/run-metacoin.sh

@@ -39,3 +39,10 @@ cat truffle-config.js
 npm init --yes
 yarn add $PR_PATH --dev
 npx truffle run coverage
+
+# Test that coverage/ was generated
+if [ ! -d "coverage" ]; then
+  echo "ERROR: no coverage folder was created."
+  exit 1
+fi
+

truffle-plugin.json

@@ -1,5 +1,5 @@
 {
   "commands": {
-    "coverage": "dist/truffle.plugin.js"
+    "coverage": "truffle.plugin.js"
   }
 }