tests: add unit test for lambda builder

tests/apps/lambda-python/function.py

@@ -0,0 +1,6 @@
+import requests
+
+
+def handler(event, context):
+    print("Hello World!")
+    return "Hello World!"

tests/apps/lambda-python/requirements.txt

@@ -0,0 +1 @@
+requests==2.27.1

tests/unit/builder-lambda.bats

@@ -0,0 +1,154 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup_file() {
+  install_pack
+}
+
+setup() {
+  create_app
+}
+
+teardown() {
+  destroy_app
+}
+
+@test "(builder-lambda:set)" {
+  run /bin/bash -c "dokku config:set $TEST_APP SECRET_KEY=fjdkslafjdk"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "dokku builder:set $TEST_APP selected lambda"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run deploy_app lambda-python dokku@dokku.me:$TEST_APP inject_lambda_yml
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains 'Building app with image mlupin/docker-lambda:python3.9-build'
+  assert_output_contains 'Installing dependencies via pip'
+
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Hello World" 0
+  assert_success
+
+  run /bin/bash -c "curl -d {} --silent --write-out '%{http_code}\n' $(dokku url $TEST_APP)/2015-03-31/functions/function.handler/invocations | grep 200"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Hello World"
+  assert_success
+
+  run /bin/bash -c "dokku builder-lambda:set $TEST_APP lambdayml-path nonexistent.yml"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "dokku ps:rebuild $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains 'Building app with image mlupin/docker-lambda:python3.9-build'
+  assert_output_contains 'Installing dependencies via pip'
+
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Hello World" 0
+  assert_success
+
+  run /bin/bash -c "curl -d {} --silent --write-out '%{http_code}\n' $(dokku url $TEST_APP)/2015-03-31/functions/function.handler/invocations | grep 200"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Hello World"
+  assert_success
+
+  run /bin/bash -c "dokku builder-lambda:set $TEST_APP lambdayml-path lambda2.yml"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "dokku ps:rebuild $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains 'Building app with image mlupin/docker-lambda:python3.9-build'
+  assert_output_contains 'Installing dependencies via pip'
+
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Hello World" 0
+  assert_success
+
+  run /bin/bash -c "curl -d {} --silent --write-out '%{http_code}\n' $(dokku url $TEST_APP)/2015-03-31/functions/function.handler/invocations | grep 200"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Hello World"
+  assert_success
+
+  run /bin/bash -c "dokku builder-lambda:set $TEST_APP lambdayml-path"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "dokku ps:rebuild $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains 'Building app with image mlupin/docker-lambda:python3.9-build'
+  assert_output_contains 'Installing dependencies via pip'
+
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Hello World" 0
+  assert_success
+
+  run /bin/bash -c "curl -d {} --silent --write-out '%{http_code}\n' $(dokku url $TEST_APP)/2015-03-31/functions/function.handler/invocations | grep 200"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Hello World"
+  assert_success
+}
+
+inject_lambda_yml() {
+  local APP="$1"
+  local APP_REPO_DIR="$2"
+  [[ -z "$APP" ]] && local APP="$TEST_APP"
+  echo "-----> Injecting lambda.yml"
+  echo "---" >>"$APP_REPO_DIR/lambda.yml"
+
+  echo "-----> Injecting lambda.yml"
+  echo "---" >>"$APP_REPO_DIR/lambda.yml"
+
+  echo "-----> Injecting lambda2.yml"
+  echo "---" >>"$APP_REPO_DIR/lambda2.yml"
+  echo "build_image: mlupin/docker-lambda:python3.9-build" >>"$APP_REPO_DIR/lambda2.yml"
+  echo "run_image: mlupin/docker-lambda:python3.9" >>"$APP_REPO_DIR/lambda2.yml"
+}