Add busted unit testing framework for lua code

.luacheckrc

@@ -1,2 +1,3 @@
 std = 'ngx_lua'
 globals = {'_'}
+exclude_files = {'./rootfs/etc/nginx/lua/test/*.lua'}

.travis.yml

@@ -29,6 +29,7 @@ env:
   - KUBERNETES_VERSION=v1.9.4
   - DOCKER=docker
   - TRAVIS_TIMEOUT=240
+  - BUSTED_VERSION=2.0.rc12
   - secure: 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
   - secure: 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
   - secure: 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
@@ -42,6 +43,11 @@ jobs:
     - go get github.com/golang/lint/golint
     - go get -u github.com/jteeuwen/go-bindata/...
     - make verify-all
+  - stage: Lua Unit Test
+    before_script:
+    - rootfs/etc/nginx/lua/test/up.sh
+    script:
+    - make lua-test
   - stage: Coverage
     before_script:
     # start minikube 

Makefile

@@ -45,6 +45,8 @@ ALL_ARCH = amd64 arm arm64 ppc64le s390x
 
 QEMUVERSION=v2.9.1-1
 
+BUSTED_ARGS=-v --pattern=_test
+
 IMGNAME = nginx-ingress-controller
 IMAGE = $(REGISTRY)/$(IMGNAME)
 MULTI_ARCH_IMG = $(IMAGE)-$(ARCH)
@@ -151,6 +153,10 @@ verify-all:
 test:
 	@go test -v -race -tags "$(BUILDTAGS) cgo" $(shell go list ${PKG}/... | grep -v vendor | grep -v '/test/e2e')
 
+.PHONY: lua-test
+lua-test:
+	@busted $(BUSTED_ARGS) ./rootfs/etc/nginx/lua/test;
+
 .PHONY: e2e-image
 e2e-image: sub-container-amd64
 	TAG=$(TAG) IMAGE=$(MULTI_ARCH_IMG) docker tag $(IMAGE):$(TAG) $(IMAGE):test

docs/development.md

@@ -99,6 +99,16 @@ $ cd $GOPATH/src/k8s.io/ingress-nginx
 $ make e2e-test
 ```
 
+To run unit-tests for lua code locally, run:
+
+```console
+$ cd $GOPATH/src/k8s.io/ingress-nginx
+$ ./rootfs/etc/nginx/lua/test/up.sh
+$ make lua-test
+```
+
+Lua tests are located in `$GOPATH/src/k8s.io/ingress-nginx/rootfs/etc/nginx/lua/test`. When creating a new test file it must follow the naming convention `<mytest>_test.lua` or it will be ignored. 
+
 ## Releasing
 
 All Makefiles will produce a release binary, as shown above. To publish this

hack/verify-golint.sh

@@ -26,7 +26,7 @@ GOLINT=${GOLINT:-"golint"}
 PACKAGES=($(go list ./... | grep -v /vendor/))
 bad_files=()
 for package in "${PACKAGES[@]}"; do
-  out=$("${GOLINT}" -min_confidence=0.9 "${package}" | grep -v 'should not use dot imports' || :)
+  out=$("${GOLINT}" -min_confidence=0.9 "${package}" | grep -v -E '(should not use dot imports|internal/file/bindata.go)' || :)
   if [[ -n "${out}" ]]; then
     bad_files+=("${out}")
   fi

rootfs/etc/nginx/lua/test/balancer_test.lua

@@ -0,0 +1,3 @@
+describe("[balancer_test]", function()
+  -- TODO: write tests 
+end)

rootfs/etc/nginx/lua/test/up.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+# Copyright 2018 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+if luarocks list --porcelain busted $BUSTED_VERSION | grep -q "installed"; then
+  echo busted already installed, skipping ;
+else
+  echo busted not found, installing via luarocks...;
+  sudo luarocks install busted $BUSTED_VERSION;
+fi