INT-958 add pretest task to invoke mongodb-runner, reap old Electron procs (#368)

* INT-958 add pretest task to invoke mongodb-runner, and reap old Electron procs

Avoid downloading a stable release of MongoDB during before() hook of a test;
this will likely cause a test timeout on Evergreen.

Reap old Electron procs on Evergreen

* evergreen: add exec_timeout_secs at 30 min

(cherry picked from commit 2efca1c)

Author: kangas

.evergreen.yml

@@ -8,6 +8,9 @@
 
 stepback: false
 
+# Upper bound on any shell.exec task. 30 min should be plenty of time.
+exec_timeout_secs: 1800
+
 variables:
 # function "save release variants" is conditional on the following
 # -> all except ubuntu
@@ -127,10 +130,12 @@ functions:
         ${npm|npm} run check
 
         # Create a release build
-        ${npm|npm} run prepublish;
+        npm run release;
+        ls -alh dist/
 
         # Test the release build
-        ${npm|npm} run test-unit;
+        npm run test-unit;
+        # npm run test
         EOF_BUILD_SH
         #
         # Use ".", not "source" below to read script. Required for /bin/sh on Ubuntu.
@@ -242,6 +247,7 @@ buildvariants:
   expansions:
     build_via_local_tunnel: true
     fetch_npm_tarball: node-v5.5.0-npm-3.3.12-darwin-x64.tgz
+    killall_evergreen: 'pkill -9 Electron; pkill -9 mongod; pkill -9 mongos; pkill -9 mongo'
     node_path: "$(pwd)/.deps/bin"
     installer_content_type: "application/x-apple-diskimage"
     installer_filename: "MongoDB Compass.dmg"
@@ -256,6 +262,7 @@ buildvariants:
   - "windows-64-vs2013-test"
   expansions:
     fetch_npm_tarball: node-v5.5.0-npm-3.3.12-windows-x64.tgz
+    killall_evergreen: 'pkill -9 Electron; pkill -9 mongod; pkill -9 mongos; pkill -9 mongo'
     node_path: "$(pwd)/.deps"
     installer_content_type: "application/octet-stream"
     installer_filename: "MongoDBCompassSetup.exe"
@@ -271,6 +278,7 @@ buildvariants:
   - "ubuntu1404-test"
   expansions:
     fetch_npm_tarball: node-v5.5.0-npm-3.3.12-linux-x64.tgz
+    killall_evergreen: 'pkill -9 electron; pkill -9 mongod; pkill -9 mongos; pkill -9 mongo'
     node_path: "$(pwd)/.deps/bin"
     compile_env: CC=/opt/mongodbtoolchain/bin/gcc CXX=/opt/mongodbtoolchain/bin/g++
     num_cores: $(grep -c ^processor /proc/cpuinfo)

package.json

@@ -37,6 +37,7 @@
     "clean": "npm run postuninstall",
     "compile-ui": "node scripts/compile-ui.js",
     "fmt": "mongodb-js-fmt ./*.js src/{**/*.js,*.js} test/{**/*.js,*.js} scripts/*.js",
+    "pretest": "mongodb-runner start && mongodb-runner stop",
     "release": "npm run prepublish",
     "test-functional": "npm test -- --functional",
     "test-unit": "npm test -- --unit",