[travis] Add lenet_mnist bundle to Debug build

Along with this I moved test running logic out of the travis.yml into a separate run script.

.ci/lenet_mnist_expected_output.txt

@@ -0,0 +1,9 @@
+Result: 1
+Result: 2
+Result: 3
+Result: 4
+Result: 5
+Result: 6
+Result: 7
+Result: 8
+Result: 9

.travis.yml

@@ -73,10 +73,5 @@ jobs:
       script:
         - CLANG_COMMAND=/usr/bin/clang-format-6.0 ./utils/format.sh check
 
-# Note: keep_alive() prevents travis from exiting early on tests that take a while.
 script:
- - function keep_alive() { while true; do echo -en "\a"; sleep 60; done }
- - keep_alive &
- - ninja all
- - CTEST_PARALLEL_LEVEL=2 ninja test || ( cat Testing/Temporary/LastTest.log && exit 1 )
- - if [ "$TEST_NAME" = "DEBUG" ]; then CTEST_PARALLEL_LEVEL=2 ninja test_unopt; fi
+  - ../.travis/run_tests.sh ${TEST_NAME}

.travis/run_tests.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+set -euo pipefail
+
+: ${1?"Usage: \`$0 TEST_NAME\` (TEST_NAME must be one of {ASAN, DEBUG})"}
+TEST_NAME=${1}
+
+# Note: keep_alive() prevents travis from exiting early on tests that take a while.
+keep_alive() { while true; do echo -en "\a"; sleep 540; done }
+
+# Pass in which tests to run (one of {test, test_unopt}).
+run_unit_tests() {
+    CTEST_PARALLEL_LEVEL=2 ninja ${1} || ( cat Testing/Temporary/LastTest.log && exit 1 )
+}
+
+# Pass one of {YES, NO} for QUANTIZE.
+run_and_check_bundle() {
+    echo "Checking lenet_mnist bundle with QUANTIZE=${1}"
+    cd ${GLOW_SRC}/examples/bundles/lenet_mnist/
+    ( QUANTIZE=${1} make &> raw_results.txt ) || ( cat raw_results.txt && exit 1 )
+    ( tail -n72 raw_results.txt | grep -F "Result: " > results.txt ) || ( cat raw_results.txt && exit 1 )
+    diff results.txt ${GLOW_SRC}/.ci/lenet_mnist_expected_output.txt
+    rm results.txt raw_results.txt
+    echo "Successfully completed checking lenet_mnist bundle with QUANTIZE=${1}"
+}
+
+export GLOW_SRC=${PWD}/..
+export LOADER=${GLOW_SRC}/build/bin/image-classifier
+
+keep_alive &
+
+case ${TEST_NAME} in
+ASAN)
+    ninja all
+    run_unit_tests test
+    ;;
+
+DEBUG)
+    ninja all
+    run_unit_tests test
+    run_unit_tests test_unopt
+    run_and_check_bundle YES
+    run_and_check_bundle NO
+    ;;
+
+*)
+    echo "Error, '${TEST_NAME}' not valid mode; Must be one of {ASAN, DEBUG}."
+    exit 1
+    ;;
+esac