Test layers againts tfjs-core@master on Travis Nightly (every 24 hour…

…s) (#353)

Travis nightly will clone and link the latest unpublished tfjs-core before running any of the regular stuff (build, lint, test).

If a nightly fails, Travis will email us (assuming you have correct email settings). Nightly runs every 24 hours.

Towards tensorflow/tfjs#848

DEV

.travis.yml

@@ -6,9 +6,7 @@ matrix:
         - "8"
         - "10"
       script:
-        - yarn build
-        - yarn lint
-        - yarn test-travis
+        - ./scripts/test-travis.sh
       cache: yarn
       git:
         depth: 5

package.json

@@ -15,7 +15,7 @@
     "clang-format": "~1.2.2",
     "http-server": "~0.10.0",
     "jasmine-core": "~3.1.0",
-    "karma": "~2.0.0",
+    "karma": "~2.0.2",
     "karma-browserstack-launcher": "~1.3.0",
     "karma-chrome-launcher": "~2.2.0",
     "karma-firefox-launcher": "~1.1.0",

scripts/test-travis.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+# Copyright 2018 Google LLC
+#
+# Use of this source code is governed by an MIT-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/MIT.
+# =============================================================================
+
+set -e
+
+# If this is nightly, use tfjs-core at master.
+if [ "$TRAVIS_EVENT_TYPE" = cron ]
+then
+  echo '########### Testing against tfjs-core@master ###########'
+  yarn run rimraf tfjs-core/
+  # depth is an optimization for faster clone (don't clone all of history).
+  git clone https://github.com/tensorflow/tfjs-core.git --depth=5
+  cd tfjs-core
+  yarn && yarn build && yarn publish-local
+  cd ..
+  yarn link-local '@tensorflow/tfjs-core'
+fi
+
+# Regular testing.
+yarn build
+yarn lint
+yarn test-travis