From 74c06a140be2ff7c21952c052e81afbd8088474e Mon Sep 17 00:00:00 2001
From: Daniel Nephin <dnephin@docker.com>
Date: Mon, 15 May 2017 17:00:35 -0400
Subject: [PATCH] Support running unit tests when files are saved.

Signed-off-by: Daniel Nephin <dnephin@docker.com>
---
 Makefile                   |  5 ++++-
 README.md                  |  1 -
 docker.Makefile            |  4 ++++
 dockerfiles/Dockerfile.dev |  4 ++++
 scripts/test/watch         | 12 ++++++++++++
 5 files changed, 24 insertions(+), 2 deletions(-)
 create mode 100755 scripts/test/watch

diff --git a/Makefile b/Makefile
index 4b9a71eae8..89ca9a4762 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,6 @@ test:
 lint:
 	@gometalinter --config gometalinter.json ./...
 
-
 .PHONY: binary
 binary:
 	@./scripts/build/binary
@@ -33,6 +32,10 @@ cross:
 dynbinary:
 	@./scripts/build/dynbinary
 
+.PHONY: watch
+watch:
+	@./scripts/test/watch
+
 # download dependencies (vendor/) listed in vendor.conf
 .PHONY: vendor
 vendor: vendor.conf
diff --git a/README.md b/README.md
index fcf49495ce..340556d8c7 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,6 @@ Run all linting:
 ```
 $ make -f docker.Makefile lint
 ```
-`
 
 ### In-container development environment
 
diff --git a/docker.Makefile b/docker.Makefile
index 5fde78e470..3117ac538e 100644
--- a/docker.Makefile
+++ b/docker.Makefile
@@ -46,6 +46,10 @@ test: build_docker_image
 cross: build_cross_image
 	@docker run --rm $(MOUNTS) $(CROSS_IMAGE_NAME) make cross
 
+.PHONY: watch
+watch: build_docker_image
+	@docker run --rm $(MOUNTS) $(DEV_DOCKER_IMAGE_NAME) make watch
+
 # start container in interactive mode for in-container development
 .PHONY: dev
 dev: build_docker_image
diff --git a/dockerfiles/Dockerfile.dev b/dockerfiles/Dockerfile.dev
index d1887e85ef..a14ea25f29 100644
--- a/dockerfiles/Dockerfile.dev
+++ b/dockerfiles/Dockerfile.dev
@@ -15,6 +15,10 @@ RUN     go get github.com/jteeuwen/go-bindata/go-bindata && \
         cp /go/bin/go-bindata /usr/bin && \
         rm -rf /go/src/* /go/pkg/* /go/bin/*
 
+RUN     go get github.com/dnephin/filewatcher && \
+        cp /go/bin/filewatcher /usr/bin/ && \
+        rm -rf /go/src/* /go/pkg/* /go/bin/*
+
 ENV     CGO_ENABLED=0
 WORKDIR /go/src/github.com/docker/cli
 CMD     sh
diff --git a/scripts/test/watch b/scripts/test/watch
new file mode 100755
index 0000000000..61057e2430
--- /dev/null
+++ b/scripts/test/watch
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+set -e
+
+filewatcher \
+    -L 5 \
+    -x '**/*.swp' \
+    -x .git \
+    -x build \
+    -x .idea \
+    -- \
+    sh -c 'go test -timeout 10s -v ./${dir} || ( echo; echo; exit 1 )'