honor escaped newlines in requirements.txt (serverless#264)

* test proving bug serverless#261 with pip-tools

* honor escaped newlines in requirements.txt

fixes serverless#261

* fix merge issue

Author: dschep

circle.yml

@@ -24,7 +24,7 @@ jobs:
       # other deps
       - run: sudo apt -y update && sudo apt -y install python-pip python2.7 curl unzip
       # instal pipenv
-      - run: sudo python3.6 -m pip install pipenv
+      - run: sudo python3.6 -m pip install pipenv pip-tools
       # install nodejs
       - run: curl -sL https://deb.nodesource.com/setup_6.x | sudo bash - && sudo apt -y install nodejs
       # install serverless & depcheck

lib/pip.js

@@ -297,6 +297,7 @@ function generateRequirementsFile(source, target, options) {
   const noDeploy = new Set(options.noDeploy || []);
   const requirements = fse
     .readFileSync(source, { encoding: 'utf-8' })
+    .replace(/\\\n/g, ' ')
     .split(/\r?\n/);
   var prepend = [];
   const filteredRequirements = requirements.filter(req => {

test.bats

@@ -35,6 +35,15 @@ teardown() {
     ls puck/flask
 }
 
+@test "py3.6 can package flask with hashes" {
+    cd tests/base
+    npm i $(npm pack ../..)
+    pip-compile --output-file requirements-w-hashes.txt --generate-hashes requirements.txt
+    sls package --fileName requirements-w-hashes.txt
+    unzip .serverless/sls-py-req-test.zip -d puck
+    ls puck/flask
+}
+
 @test "py3.6 can package flask & bottle with zip option" {
     cd tests/base
     npm i $(npm pack ../..)
@@ -580,11 +589,8 @@ teardown() {
 @test "py3.6 supports custom file name with fileName option" {
     cd tests/base
     npm i $(npm pack ../..)
-    docker &> /dev/null || skip "docker not present"
-    ! uname -sm|grep Linux || groups|grep docker || id -u|egrep '^0$' || skip "can't dockerize on linux if not root & not in docker group"
-    perl -p -i'.bak' -e 's/(pythonRequirements:$)/\1\n    fileName: puck/' serverless.yml
     echo "requests" > puck
-    sls package
+    sls --fileName puck package
     ls .serverless/requirements/requests
     ! ls .serverless/requirements/flask
 }

tests/base/serverless.yml

@@ -13,6 +13,7 @@ custom:
     slim: ${opt:slim, self:custom.defaults.slim}
     slimPatterns: ${file(./slimPatterns.yml):slimPatterns, self:custom.defaults.slimPatterns}
     vendor: ${opt:vendor, ''}
+    fileName: ${opt:fileName, 'requirements.txt'}
   defaults:
     slim: false
     slimPatterns: false