Travis CI to test that website links are valid

.travis.yml

@@ -33,9 +33,20 @@ before_install:
   - chmod +x bazel-0.1.2-installer-linux-x86_64.sh
   - ./bazel-0.1.2-installer-linux-x86_64.sh --user
 
+before_script:
+  # required for building the website docs
+  - (cd website && npm install && npm install gulp && which gulp)
+  - wget -q https://github.com/spf13/hugo/releases/download/v0.15/hugo_0.15_amd64.deb
+  - sudo dpkg -i hugo*.deb
+  - hugo version
+  - pip install --user requests==2.9.0
+  - pip install --user LinkChecker
+  - linkchecker --version
+
 script:
   - which gcc-4.8
   - gcc --version
   - which g++-4.8
-  - g++ --version 
-  - scripts/travis/build.sh && scripts/travis/test.sh
+  - g++ --version
+  # TODO: change below from || to && once all links are fixed so we fail build on bad ones
+  - (cd website && make site) || scripts/travis/build.sh && scripts/travis/test.sh

website/Makefile

@@ -1,6 +1,7 @@
 setup:
 	@brew list hugo || brew install hugo
 	@npm install
+	@which gulp || npm install gulp
 
 serve:
 	@hugo server --watch

website/README.md

@@ -74,6 +74,18 @@ browser from the command line:
 $ open http://localhost:1313/heron
 ```
 
+## Checking Links
+
+To verify that the links in the docs are all valid, run `make linkchecker`, which will produce a
+report of broken links. If `linkchecker` fails to install or run properly, you can install it manually.
+Note that `linkchecker` versions 9.2 and 9.3 require the python `requests` >= 2.2.0 and < 2.10.0.
+
+```bash
+$ pip uninstall requests
+$ pip install requests==2.9.0
+$ pip install linkchecker
+```
+
 ## Publishing the Site
 
 The content on the [twitter.github.io/heron](http://twitter.github.io/heron) website is what is

website/linkchecker.sh

@@ -1,14 +1,22 @@
-#! bin/bash
+#!/bin/bash
+
+set -e
 
 #linkchecker removes previous runs.
-pip install linkchecker
+which linkchecker || pip install linkchecker
 rm -f linkchecker-errors.csv && rm -f linkchecker-out.csv
-linkchecker public/index.html --no-warnings -F csv 
+
+set +e
+linkchecker public/index.html --no-warnings -F csv
+STATUS=$?
+set -e
+
 #uses error code: on fail, write linkchecker-errors.csv for debugging
-if [[ $? == 1 ]]; then 
+if [[ $STATUS != 0 ]]; then
   cut -sd ';' -f 1,2 linkchecker-out.csv | tr ';' ' ' | \
   awk '{ print $2 " " $1}' | sort -u >> linkchecker-errors.csv;
-  echo "linkchecker failed - check linkchecker-errors.csv"; 
+  echo "linkchecker failed - check linkchecker-errors.csv";
+   exit $STATUS
 else
   echo "linkchecker passes"; 
 fi