Support multiple python versions, update ascii art lib, tests

Author: kilna

example/requirements.txt

@@ -1 +1 @@
-xart
+pyfiglet

example/run_tests

@@ -3,7 +3,8 @@
 set -e
 set -o pipefail
 cd /lambda
-if [ `lambda invoke | md5sum | cut -d ' ' -f 1` != '5cd3139eadee0a85b2bb9f2164f3b6f6' ]; then
-  echo 'ERROR: md5sum of output returned by lambda invoke did not match expected results'
+if [ `lambda invoke | md5sum | cut -d ' ' -f 1` != '53fb4322cc3fe840f02530054ef93603' ]; then
+  echo 'ERROR: md5sum of output returned by lambda invoke did not match expected results' 1&>2
+  exit 1
 fi
 

example/service.py

@@ -1,4 +1,4 @@
 #!/usr/bin/env python
 import subprocess
 def handler(event, context):
-  return subprocess.check_output( ['xart', '-f', event.get('font', 'Small'), event.get('text', '') ] )
+  return subprocess.check_output( ['pyfiglet', '-f', event.get('font', 'small'), event.get('text', '') ] ).decode('ascii')

test/test_dockerfiles

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+set -e -o pipefail
+
+TMPDIR=${TMPDIR:-/tmp}
+docker_dir="$PWD"
+base_image="alpine-aws-python-lambda"
+example_image="example-lambda-image"
+
+header() { printf '=%.0s' {1..79}; echo; echo $@; printf '=%.0s' {1..79}; echo; }
+
+declare -a dockerfiles=( "$@" )
+if [[ $# == 0 ]]; then
+  dockerfiles=( Dockerfile-* )
+fi
+
+for dockerfile in "${dockerfiles[@]}"; do
+  
+  ver=$(echo "$dockerfile" | cut -d '-' -f 2)
+  tag="test-$ver"
+  base_image_tag="$base_image:$tag"
+  example_image_tag="$example_image:$tag"
+  example_image_tmp="$TMPDIR/$example_image-$tag"
+  
+  header "Build base image - $ver"
+  set -x
+  cd $docker_dir
+  docker build --tag $base_image_tag --file $dockerfile .
+  set +x
+
+  header "Copy derived project - $ver"
+  set -x
+  rm -rvf $example_image_tmp &>/dev/null || true
+  cp -rv $docker_dir/example/ $example_image_tmp/
+  cd $example_image_tmp
+  sed -i "1s/.*/FROM $base_image_tag/" Dockerfile
+  set +x
+
+  header "Build derived docker - $ver"
+  set -x
+  docker build --tag $example_image_tag .
+  set +x
+
+  header "Invoke lambda - $ver"
+  set -x
+  docker run --rm $example_image_tag lambda invoke
+  set +x
+
+  header "Run tests - $ver"
+  set -x
+  docker run --rm $example_image_tag ./run_tests
+  set +x
+
+  header "Build lambda - $ver"
+  set -x
+  docker run --rm $example_image_tag lambda build
+  set +x
+
+  header "Cleanup - $ver"
+  set -x
+  docker rmi -f $example_image_tag
+  docker rmi -f $base_image_tag
+  rm -rvf $example_image_tmp
+  set +x
+
+done
+