self-contained "testing" infrastructure

Makefile

@@ -1,17 +1,24 @@
 shellcheck:
 ifeq ($(shell shellcheck > /dev/null 2>&1 ; echo $$?),127)
 ifeq ($(shell uname),Darwin)
-		brew install shellcheck
+	brew install shellcheck
 else
-		sudo add-apt-repository 'deb http://archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse'
+	sudo add-apt-repository 'deb http://archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse'
-		sudo apt-get update && sudo apt-get install -y shellcheck
+	sudo apt-get update -qq && sudo apt-get install -qq -y shellcheck
 endif
 endif
 
 bats:
+ifeq ($(shell bats > /dev/null 2>&1 ; echo $$?),127)
+ifeq ($(shell uname),Darwin)
 	git clone https://github.com/sstephenson/bats.git /tmp/bats
 	cd /tmp/bats && sudo ./install.sh /usr/local
 	rm -rf /tmp/bats
+else
+	sudo add-apt-repository ppa:duggan/bats --yes
+	sudo apt-get update -qq && sudo apt-get install -qq -y bats
+endif
+endif
 
 ci-dependencies: shellcheck bats
 
@@ -21,10 +28,13 @@ lint:
 	# SC2068: Double quote array expansions, otherwise they're like $* and break on spaces. - https://github.com/koalaman/shellcheck/wiki/SC2068
 	# SC2086: Double quote to prevent globbing and word splitting - https://github.com/koalaman/shellcheck/wiki/SC2086
 	@echo linting...
-	@$(QUIET) find . -not -path '*/\.*' | xargs file | egrep "shell|bash" | awk '{ print $$1 }' | sed 's/://g' | xargs shellcheck -e SC2046,SC2068,SC2086
+	@$(QUIET) find ./ -maxdepth 1 -not -path '*/\.*' | xargs file | egrep "shell|bash" | awk '{ print $$1 }' | sed 's/://g' | xargs shellcheck -e SC2046,SC2068,SC2086
 
 unit-tests:
 	@echo running unit tests...
 	@$(QUIET) bats tests/unit
 
-test: ci-dependencies lint unit-tests
+setup:
+	bash tests/setup.sh
+
+test: setup ci-dependencies lint unit-tests

tests/setup.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+source "$(dirname $0)/unit/test_helper.bash"
+
+if [[ ! -d $DOKKU_ROOT ]]; then
+  git clone https://github.com/progrium/dokku.git $DOKKU_ROOT > /dev/null
+fi
+
+cd $DOKKU_ROOT
+echo "Dokku version $DOKKU_VERSION"
+git checkout $DOKKU_VERSION > /dev/null
+cd -
+
+rm -rf $DOKKU_ROOT/plugins/service
+mkdir -p $DOKKU_ROOT/plugins/service
+find ./ -maxdepth 1 -type f -exec cp '{}' $DOKKU_ROOT/plugins/service \;

tests/unit/service.bats

@@ -1,37 +1,6 @@
 #!/usr/bin/env bats
-export SERVICE=redis
 
-flunk() {
+load test_helper
-  { if [ "$#" -eq 0 ]; then cat -
-    else echo "$*"
-    fi
-  }
-  return 1
-}
-
-assert_success() {
-  if [ "$status" -ne 0 ]; then
-    flunk "command failed with exit status $status"
-  elif [ "$#" -gt 0 ]; then
-    assert_output "$1"
-  fi
-}
-
-assert_equal() {
-  if [ "$1" != "$2" ]; then
-    { echo "expected: $1"
-      echo "actual:   $2"
-    } | flunk
-  fi
-}
-
-assert_output() {
-  local expected
-  if [ $# -eq 0 ]; then expected="$(cat -)"
-  else expected="$1"
-  fi
-  assert_equal "$expected" "$output"
-}
 
 @test "(service) dokku" {
   dokku $SERVICE:create l

tests/unit/test_helper.bash

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+
+export DOKKU_QUIET_OUTPUT=1
+export DOKKU_ROOT="tests/dokku"
+export DOKKU_VERSION=${DOKKU_VERSION:-"master"}
+export PATH="$(dirname $0)/../dokku:$PATH"
+export PLUGIN_PATH="$DOKKU_ROOT/plugins"
+export SERVICE=redis
+
+flunk() {
+  { if [ "$#" -eq 0 ]; then cat -
+    else echo "$*"
+    fi
+  }
+  return 1
+}
+
+assert_equal() {
+  if [ "$1" != "$2" ]; then
+    { echo "expected: $1"
+      echo "actual:   $2"
+    } | flunk
+  fi
+}
+
+assert_exit_status() {
+  assert_equal "$status" "$1"
+}
+
+assert_success() {
+  if [ "$status" -ne 0 ]; then
+    flunk "command failed with exit status $status"
+  elif [ "$#" -gt 0 ]; then
+    assert_output "$1"
+  fi
+}
+
+assert_exists() {
+  if [ ! -f "$1" ]; then
+    flunk "expected file to exist: $1"
+  fi
+}
+
+assert_contains() {
+  if [[ "$1" != *"$2"* ]]; then
+    flunk "expected $2 to be in: $1"
+  fi
+}
+
+assert_output() {
+  local expected
+  if [ $# -eq 0 ]; then expected="$(cat -)"
+  else expected="$1"
+  fi
+  assert_equal "$expected" "$output"
+}