Task: Simplify development

The base directory has all shell scripts in scripts/
and all example/test files in examples/.
A Makefile provides all the commands with helpful information.
If a developer simply types `make` then vendor is properly updated,
the code is formatted, linted, tested, built, acceptance test run,
and installed.

Linting errors resolved.
Ignored test case (`TestParsePath`) updated to work as expected.

.gitignore

@@ -6,6 +6,7 @@
 # Folders
 _obj
 _test
+bin
 build
 .DS_Store
 
@@ -26,3 +27,5 @@ coverage.out
 *.prof
 yaml
 vendor/*/
+tmp/
+cover/

.travis.yml

@@ -1,4 +1,6 @@
 language: go
 go:
     - 1.7.x
-script: ./ci.sh
+script:
+  - scripts/devtools.sh
+  - make local build

Dockerfile.dev

@@ -0,0 +1,9 @@
+FROM golang:1.7
+
+COPY scripts/devtools.sh /opt/devtools.sh
+
+RUN set -e -x \
+    && /opt/devtools.sh
+
+ENV CGO_ENABLED 0
+ENV GOPATH /go:/yaml

Makefile

@@ -0,0 +1,106 @@
+MAKEFLAGS += --warn-undefined-variables
+SHELL := /bin/bash
+.SHELLFLAGS := -o pipefail -euc
+.DEFAULT_GOAL := install
+
+include Makefile.variables
+
+.PHONY: help
+help:
+	@echo 'Management commands for cicdtest:'
+	@echo
+	@echo 'Usage:'
+	@echo '  ## Develop / Test Commands'
+	@echo '    make build           Build yaml binary.'
+	@echo '    make install         Install yaml.'
+	@echo '    make xcompile        Build cross-compiled binaries of yaml.'
+	@echo '    make vendor          Install dependencies using govendor.'
+	@echo '    make format          Run code formatter.'
+	@echo '    make check           Run static code analysis (lint).'
+	@echo '    make test            Run tests on project.'
+	@echo '    make cover           Run tests and capture code coverage metrics on project.'
+	@echo '    make clean           Clean the directory tree of produced artifacts.'
+	@echo
+	@echo '  ## Utility Commands'
+	@echo '    make setup           Configures Minishfit/Docker directory mounts.'
+	@echo
+
+
+.PHONY: clean
+clean:
+	@rm -rf bin build cover *.out
+
+veryclean: clean
+	rm -rf tmp
+	find vendor/* -maxdepth 0 -ignore_readdir_race -type d -exec rm -rf {} \;
+
+## prefix before other make targets to run in your local dev environment
+local: | quiet
+	@$(eval DOCKRUN= )
+quiet: # this is silly but shuts up 'Nothing to be done for `local`'
+	@:
+
+prepare: tmp/dev_image_id
+tmp/dev_image_id: Dockerfile.dev scripts/devtools.sh
+	@[ -z "${DOCKRUN}" ] || mkdir -p tmp
+	@[ -z "${DOCKRUN}" ] || docker rmi -f ${DEV_IMAGE} > /dev/null 2>&1 || true
+	@[ -z "${DOCKRUN}" ] || docker build -t ${DEV_IMAGE} -f Dockerfile.dev .
+	@[ -z "${DOCKRUN}" ] || docker inspect -f "{{ .ID }}" ${DEV_IMAGE} > tmp/dev_image_id
+
+# ----------------------------------------------
+# build
+.PHONY: build
+build: build/dev
+
+.PHONY: build/dev
+build/dev: test *.go
+	@mkdir -p bin/
+	${DOCKRUN} go build -o bin/yaml --ldflags "$(LDFLAGS)"
+	${DOCKRUN} bash ./scripts/acceptance.sh
+
+## Compile the project for multiple OS and Architectures.
+xcompile: check
+	@rm -rf build/
+	@mkdir -p build
+	${DOCKRUN} bash ./scripts/xcompile.sh
+	@find build -type d -exec chmod 755 {} \; || :
+	@find build -type f -exec chmod 755 {} \; || :
+
+.PHONY: install
+install: build
+	${DOCKRUN} go install
+
+# Each of the fetch should be an entry within vendor.json; not currently included within project
+.PHONY: vendor
+vendor: tmp/dev_image_id
+	${DOCKRUN} bash ./scripts/vendor.sh
+
+# ----------------------------------------------
+# develop and test
+
+.PHONY: format
+format: vendor
+	${DOCKRUN} bash ./scripts/format.sh
+
+.PHONY: check
+check: format
+	${DOCKRUN} bash ./scripts/check.sh
+
+.PHONY: test
+test: check
+	${DOCKRUN} bash ./scripts/test.sh
+
+.PHONY: cover
+cover: check
+	@rm -rf cover/
+	@mkdir -p cover
+	${DOCKRUN} bash ./scripts/coverage.sh
+	@find cover -type d -exec chmod 755 {} \; || :
+	@find cover -type f -exec chmod 644 {} \; || :
+
+# ----------------------------------------------
+# utilities
+
+.PHONY: setup
+setup:
+	@bash ./scripts/setup.sh

Makefile.variables

@@ -0,0 +1,34 @@
+export PROJECT = yaml
+IMPORT_PATH := github.com/mikefarah/${PROJECT}
+
+export GIT_COMMIT = $(shell git rev-parse --short HEAD)
+export GIT_DIRTY = $(shell test -n "$$(git status --porcelain)" && echo "+CHANGES" || true)
+export GIT_DESCRIBE = $(shell git describe --tags --always)
+LDFLAGS :=
+# LDFLAGS += -X ${IMPORT_PATH}/${PROJECT}.Commit=${GIT_COMMIT}
+# LDFLAGS += -X ${IMPORT_PATH}/${PROJECT}.Version=${GIT_DESCRIBE}
+
+# Windows environment?
+CYG_CHECK := $(shell hash cygpath 2>/dev/null && echo 1)
+ifeq ($(CYG_CHECK),1)
+	VBOX_CHECK := $(shell hash VBoxManage 2>/dev/null && echo 1)
+
+	# Docker Toolbox (pre-Windows 10)
+	ifeq ($(VBOX_CHECK),1)
+		ROOT := /${PROJECT}
+	else
+		# Docker Windows
+		ROOT := $(shell cygpath -m -a "$(shell pwd)")
+	endif
+else
+	# all non-windows environments
+	ROOT := $(shell pwd)
+endif
+
+DEV_IMAGE := ${PROJECT}_dev
+
+DOCKRUN := docker run --rm \
+	-v ${ROOT}/vendor:/go/src \
+	-v ${ROOT}:/${PROJECT}/src/${IMPORT_PATH} \
+	-w /${PROJECT}/src/${IMPORT_PATH} \
+	${DEV_IMAGE}

README.md

@@ -44,8 +44,8 @@ Use "yaml [command] --help" for more information about a command.
 ```
 
 ## Contribute
-1. run `govendor sync` [link](https://github.com/kardianos/govendor)
+1. `make vendor` OR run `govendor sync` [link](https://github.com/kardianos/govendor)
 2. add unit tests
-3. make changes
-4. run ./precheckin.sh
+3. apply changes
+4. `make`
 5. profit

coverage.sh

@@ -1,3 +0,0 @@
-#!/bin/bash
-
-go test -coverprofile=coverage.out && go tool cover -html=coverage.out

data_navigator.go

@@ -1,8 +1,9 @@
 package main
 
 import (
-	"gopkg.in/yaml.v2"
 	"strconv"
+
+	yaml "gopkg.in/yaml.v2"
 )
 
 func entryInSlice(context yaml.MapSlice, key interface{}) *yaml.MapItem {
@@ -40,7 +41,7 @@ func writeMap(context interface{}, paths []string, value interface{}) yaml.MapSl
 
 	log.Debugf("\tchild.Value %v\n", child.Value)
 
-	remainingPaths := paths[1:len(paths)]
+	remainingPaths := paths[1:]
 	child.Value = updatedChildValue(child.Value, remainingPaths, value)
 	log.Debugf("\tReturning mapSlice %v\n", mapSlice)
 	return mapSlice
@@ -89,7 +90,7 @@ func writeArray(context interface{}, paths []string, value interface{}) []interf
 
 	log.Debugf("\tcurrentChild %v\n", currentChild)
 
-	remainingPaths := paths[1:len(paths)]
+	remainingPaths := paths[1:]
 	array[index] = updatedChildValue(currentChild, remainingPaths, value)
 	log.Debugf("\tReturning array %v\n", array)
 	return array
@@ -113,7 +114,7 @@ func readMapSplat(context yaml.MapSlice, tail []string) interface{} {
 	var i = 0
 	for _, entry := range context {
 		if len(tail) > 0 {
-			newArray[i] = recurse(entry.Value, tail[0], tail[1:len(tail)])
+			newArray[i] = recurse(entry.Value, tail[0], tail[1:])
 		} else {
 			newArray[i] = entry.Value
 		}
@@ -160,7 +161,7 @@ func readArraySplat(array []interface{}, tail []string) interface{} {
 
 func calculateValue(value interface{}, tail []string) interface{} {
 	if len(tail) > 0 {
-		return recurse(value, tail[0], tail[1:len(tail)])
+		return recurse(value, tail[0], tail[1:])
 	}
 	return value
 }

data_navigator_test.go

@@ -2,11 +2,12 @@ package main
 
 import (
 	"fmt"
-	"github.com/op/go-logging"
-	"gopkg.in/yaml.v2"
 	"os"
 	"sort"
 	"testing"
+
+	logging "github.com/op/go-logging"
+	yaml "gopkg.in/yaml.v2"
 )
 
 func TestMain(m *testing.M) {

json_converter.go

@@ -2,7 +2,8 @@ package main
 
 import (
 	"encoding/json"
-	"gopkg.in/yaml.v2"
+
+	yaml "gopkg.in/yaml.v2"
 )
 
 func jsonToString(context interface{}) string {

path_parser.go

@@ -16,13 +16,13 @@ func nextYamlPath(path string) (pathElement string, remaining string) {
 	switch path[0] {
 	case '[':
 		// e.g [0].blah.cat -> we need to return "0" and "blah.cat"
-		return search(path[1:len(path)], []uint8{']'}, true)
+		return search(path[1:], []uint8{']'}, true)
 	case '"':
 		// e.g "a.b".blah.cat -> we need to return "a.b" and "blah.cat"
-		return search(path[1:len(path)], []uint8{'"'}, true)
+		return search(path[1:], []uint8{'"'}, true)
 	default:
 		// e.g "a.blah.cat" -> return "a" and "blah.cat"
-		return search(path[0:len(path)], []uint8{'.', '['}, false)
+		return search(path[0:], []uint8{'.', '['}, false)
 	}
 }
 
@@ -39,7 +39,7 @@ func search(path string, matchingChars []uint8, skipNext bool) (pathElement stri
 			if remainingStart > len(path) {
 				remainingStart = len(path)
 			}
-			return path[0:i], path[remainingStart:len(path)]
+			return path[0:i], path[remainingStart:]
 		}
 	}
 	return path, ""

path_parser_test.go

@@ -12,9 +12,9 @@ var parsePathsTests = []struct {
 	{"a.b[0]", []string{"a", "b", "0"}},
 }
 
-func testParsePath(t *testing.T) {
+func TestParsePath(t *testing.T) {
 	for _, tt := range parsePathsTests {
-		assertResultWithContext(t, tt.expectedPaths, parsePath(tt.path), tt)
+		assertResultComplex(t, tt.expectedPaths, parsePath(tt.path))
 	}
 }
 

precheckin.sh

@@ -1,9 +0,0 @@
-#!/bin/bash
-
-set -e
-
-gofmt -w .
-golint
-./ci.sh
-
-go install

scripts/acceptance.sh

@@ -2,14 +2,11 @@
 
 set -e
 
-go test
-go build
-
 # acceptance test
-X=$(./yaml w sample.yaml b.c 3 | ./yaml r - b.c)
+X=$(./bin/yaml w ./examples/sample.yaml b.c 3 | ./bin/yaml r - b.c)
 
 if [ $X != 3 ]
   then
   echo "Failed acceptance test: expected 2 but was $X"
   exit 1
-fi
+fi

scripts/check.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+set -o errexit
+set -o pipefail
+
+gometalinter \
+  --skip=examples \
+  --tests \
+  --vendor \
+  --disable=aligncheck \
+  --disable=gotype \
+  --disable=goconst \
+  --cyclo-over=20 \
+  --deadline=300s \
+  ./...
+
+gometalinter \
+  --skip=examples \
+  --tests \
+  --vendor \
+  --disable=aligncheck \
+  --disable=gotype \
+  --disable=goconst \
+  --disable=gocyclo \
+  --deadline=300s \
+  ./...

scripts/coverage.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set -e
+
+go test -coverprofile=coverage.out
+go tool cover -html=coverage.out -o cover/coverage.html

scripts/devtools.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+go get -u github.com/alecthomas/gometalinter
+go get -u golang.org/x/tools/cmd/goimports
+go get -u github.com/mitchellh/gox
+go get -u github.com/kardianos/govendor
+
+# install all the linters
+gometalinter --install --update

scripts/format.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+find . \( -path ./vendor \) -prune -o -name "*.go" -exec goimports -w {} \;

scripts/setup.sh

@@ -0,0 +1,92 @@
+#!/bin/bash
+
+set -eu
+
+find_mgr() {
+    if hash minishift 2>/dev/null; then
+        echo "minishift"
+    else
+        if hash docker-machine 2>/dev/null; then
+            echo "docker-machine"
+        fi
+    fi
+}
+
+get_vm_name() {
+    case "$1" in
+        minishift)
+            echo "minishift"
+            ;;
+        docker-machine)
+            echo "${DOCKER_MACHINE_NAME}"
+            ;;
+        *)
+            ;;
+    esac
+}
+
+is_vm_running() {
+    local vm=$1
+    declare -a running=($(VBoxManage list runningvms | awk '{ print $1 }'))
+    local result='false'
+
+    for rvm in "${running[@]}"; do
+        if [[ "${rvm}" == *"${vm}"* ]]; then
+            result='true'
+        fi
+    done
+    echo "$result"
+}
+
+if hash cygpath 2>/dev/null; then
+    PROJECT_DIR=$(cygpath -w -a "$(pwd)")
+else
+    PROJECT_DIR=$(pwd)
+fi
+
+VM_MGR=$(find_mgr)
+if [[ -z $VM_MGR ]]; then
+    echo "ERROR: No VM Manager found; expected one of ['minishift', 'docker-machine']"
+    exit 1
+fi
+
+VM_NAME=$(get_vm_name "$VM_MGR")
+if [[ -z $VM_NAME ]]; then
+    echo "ERROR: No VM found; try running 'eval $(docker-machine env)'"
+    exit 1
+fi
+
+if ! hash VBoxManage 2>/dev/null; then
+    echo "VirtualBox executable 'VBoxManage' not found in path"
+    exit 1
+fi
+
+avail=$(is_vm_running "$VM_NAME")
+if [[ "$avail" == *"true"* ]]; then
+    res=$(VBoxManage sharedfolder add "${VM_NAME}" --name "${PROJECT}" --hostpath "${PROJECT_DIR}" --transient 2>&1)
+    if [[ -z $res || $res == *"already exists"* ]]; then
+        # no need to show that it already exists
+        :
+    else
+        echo "$res"
+        exit 1
+    fi
+    echo "VM: [${VM_NAME}] -- Added Sharedfolder [${PROJECT}] @Path [${PROJECT_DIR}]"
+else
+    echo "$VM_NAME is not currently running; please start your VM and try again."
+    exit 1
+fi
+
+SSH_CMD="sudo mkdir -p /${PROJECT} ; sudo mount -t vboxsf ${PROJECT} /${PROJECT}"
+case "${VM_MGR}" in
+    minishift)
+        minishift ssh "${SSH_CMD}"
+        echo "VM: [${VM_NAME}] -- Mounted Sharedfolder [${PROJECT}] @VM Path [/${PROJECT}]"
+        ;;
+    docker-machine)
+        docker-machine ssh "${VM_NAME}" "${SSH_CMD}"
+        echo "VM: [${VM_NAME}] -- Mounted Sharedfolder [${PROJECT}] @VM Path [/${PROJECT}]"
+        ;;
+    *)
+        ;;
+esac

scripts/test.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+go test -v $(go list ./... | grep -v -E 'vendor|examples')

scripts/vendor.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -e
+
+govendor fetch github.com/op/go-logging
+govendor fetch github.com/spf13/cobra
+govendor fetch gopkg.in/yaml.v2
+govendor sync

utils_test.go

@@ -2,16 +2,18 @@ package main
 
 import (
 	"fmt"
-	"gopkg.in/yaml.v2"
 	"os"
+	"reflect"
 	"testing"
+
+	yaml "gopkg.in/yaml.v2"
 )
 
 func parseData(rawData string) yaml.MapSlice {
 	var parsedData yaml.MapSlice
 	err := yaml.Unmarshal([]byte(rawData), &parsedData)
 	if err != nil {
-		fmt.Println("Error parsing yaml: %v", err)
+		fmt.Printf("Error parsing yaml: %v\n", err)
 		os.Exit(1)
 	}
 	return parsedData
@@ -23,6 +25,12 @@ func assertResult(t *testing.T, expectedValue interface{}, actualValue interface
 	}
 }
 
+func assertResultComplex(t *testing.T, expectedValue interface{}, actualValue interface{}) {
+	if !reflect.DeepEqual(expectedValue, actualValue) {
+		t.Error("Expected <", expectedValue, "> but got <", actualValue, ">", fmt.Sprintf("%T", actualValue))
+	}
+}
+
 func assertResultWithContext(t *testing.T, expectedValue interface{}, actualValue interface{}, context interface{}) {
 
 	if expectedValue != actualValue {

yaml.go

@@ -2,13 +2,14 @@ package main
 
 import (
 	"fmt"
-	"github.com/op/go-logging"
-	"github.com/spf13/cobra"
-	"gopkg.in/yaml.v2"
 	"io/ioutil"
 	"os"
 	"strconv"
 	"strings"
+
+	logging "github.com/op/go-logging"
+	"github.com/spf13/cobra"
+	yaml "gopkg.in/yaml.v2"
 )
 
 var trimOutput = true
@@ -37,7 +38,7 @@ func main() {
 	rootCmd.PersistentFlags().BoolVarP(&outputToJSON, "tojson", "j", false, "output as json")
 	rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "verbose mode")
 	rootCmd.AddCommand(cmdRead, cmdWrite, cmdNew)
-	rootCmd.Execute()
+	_ = rootCmd.Execute()
 }
 
 func createReadCmd() *cobra.Command {
@@ -138,7 +139,7 @@ func read(args []string) interface{} {
 
 	var paths = parsePath(path)
 
-	return readMap(parsedData, paths[0], paths[1:len(paths)])
+	return readMap(parsedData, paths[0], paths[1:])
 }
 
 func newProperty(cmd *cobra.Command, args []string) {
@@ -180,7 +181,7 @@ func writeProperty(cmd *cobra.Command, args []string) {
 	}
 	updatedData := updateYaml(args)
 	if writeInplace {
-		ioutil.WriteFile(args[0], []byte(yamlToString(updatedData)), 0644)
+		_ = ioutil.WriteFile(args[0], []byte(yamlToString(updatedData)), 0644)
 	} else {
 		print(updatedData)
 	}
@@ -288,7 +289,7 @@ func readData(filename string, parsedData interface{}, readAsJSON bool) error {
 		rawData = readFile(filename)
 	}
 
-	return yaml.Unmarshal([]byte(rawData), parsedData)
+	return yaml.Unmarshal(rawData, parsedData)
 }
 
 func readStdin() []byte {

yaml_test.go

@@ -24,22 +24,22 @@ func TestParseValue(t *testing.T) {
 }
 
 func TestRead(t *testing.T) {
-	result := read([]string{"sample.yaml", "b.c"})
+	result := read([]string{"examples/sample.yaml", "b.c"})
 	assertResult(t, 2, result)
 }
 
 func TestReadArray(t *testing.T) {
-	result := read([]string{"sample_array.yaml", "[1]"})
+	result := read([]string{"examples/sample_array.yaml", "[1]"})
 	assertResult(t, 2, result)
 }
 
 func TestReadString(t *testing.T) {
-	result := read([]string{"sample_text.yaml"})
+	result := read([]string{"examples/sample_text.yaml"})
 	assertResult(t, "hi", result)
 }
 
 func TestOrder(t *testing.T) {
-	result := read([]string{"order.yaml"})
+	result := read([]string{"examples/order.yaml"})
 	formattedResult := yamlToString(result)
 	assertResult(t,
 		`version: 3
@@ -64,7 +64,7 @@ func TestNewYamlArray(t *testing.T) {
 }
 
 func TestUpdateYaml(t *testing.T) {
-	result := updateYaml([]string{"sample.yaml", "b.c", "3"})
+	result := updateYaml([]string{"examples/sample.yaml", "b.c", "3"})
 	formattedResult := fmt.Sprintf("%v", result)
 	assertResult(t,
 		"[{a Easy! as one two three} {b [{c 3} {d [3 4]} {e [[{name fred} {value 3}] [{name sam} {value 4}]]}]}]",
@@ -72,7 +72,7 @@ func TestUpdateYaml(t *testing.T) {
 }
 
 func TestUpdateYamlArray(t *testing.T) {
-	result := updateYaml([]string{"sample_array.yaml", "[0]", "3"})
+	result := updateYaml([]string{"examples/sample_array.yaml", "[0]", "3"})
 	formattedResult := fmt.Sprintf("%v", result)
 	assertResult(t,
 		"[3 2 3]",
@@ -80,12 +80,12 @@ func TestUpdateYamlArray(t *testing.T) {
 }
 
 func TestUpdateYaml_WithScript(t *testing.T) {
-	writeScript = "instruction_sample.yaml"
-	updateYaml([]string{"sample.yaml"})
+	writeScript = "examples/instruction_sample.yaml"
+	updateYaml([]string{"examples/sample.yaml"})
 }
 
 func TestNewYaml_WithScript(t *testing.T) {
-	writeScript = "instruction_sample.yaml"
+	writeScript = "examples/instruction_sample.yaml"
 	expectedResult := `b:
   c: cat
   e: