Add Version Service

- This is a base implementation of the Version
  Service which provides implementation around
  reading the VERSION file, the generic framework.

CHANGELOG.md

@@ -1,5 +1,10 @@
 # CHANGELOG
 
+## 0.0.9 (September 24, 2017)
+
+- Addition of Version Service
+  - Base implementation against the generic `VERSION` file
+
 ## 0.0.8 (September 24, 2017)
 
 - Cleaned up Limitations section in README.md to clearly explain the supported frameworks.

VERSION

@@ -1 +1 @@
-0.0.8
+0.0.9

services/frameworkResolver_test.go

@@ -6,7 +6,7 @@ import (
 	. "github.com/franela/goblin"
 )
 
-func Test_Flags(t *testing.T) {
+func Test_FrameworkResolver(t *testing.T) {
 	g := Goblin(t)
 	g.Describe("Framework Resolver", func() {
 

services/version.go

@@ -0,0 +1,49 @@
+package services
+
+import (
+	"errors"
+	"io/ioutil"
+)
+
+var file string
+
+// GetVersion will read the appropriate file based on the framework and return the version value
+func GetVersion(framework string) (string, error) {
+	switch framework {
+	case "node":
+		return node(), nil
+	case "generic":
+
+		version, err := generic()
+		if err != nil {
+			return version, nil
+		}
+
+		return "", err
+	default:
+		return "", errors.New("No matching frameworks")
+	}
+}
+
+func node() string {
+	return ""
+}
+
+func generic() (string, error) {
+
+	if file == "file" {
+		file = "./VERSION"
+	}
+
+	result, err := ioutil.ReadFile(file)
+	if err != nil {
+		return "", errors.New("Error reading VERSION file, malformed")
+	}
+
+	content := string(result)
+	if len(content) <= 0 {
+		return "", errors.New("No data in VERSION file")
+	}
+
+	return content, nil
+}

services/version_test.go

@@ -0,0 +1,45 @@
+package services
+
+import (
+	"testing"
+
+	. "github.com/franela/goblin"
+)
+
+func Test_VersionService(t *testing.T) {
+	g := Goblin(t)
+	g.Describe("Version Service", func() {
+
+		g.It("should read the VERSION file and return the version found inside", func() {
+			file = "../test-files/VERSION"
+
+			expected := "2.4.9"
+
+			actual, _ := generic()
+			g.Assert(actual).Equal(expected)
+		})
+
+		g.It("should throw an error if the VERSION file is empty", func() {
+			file = "../test-files/EMPTY_VERSION"
+
+			expected := "No data in VERSION file"
+
+			_, err := generic()
+
+			actual := err.Error()
+			g.Assert(actual).Equal(expected)
+		})
+
+		g.It("should throw an error if the VERSION file is malformed", func() {
+			file = "../test-files/NON_EXISTENT_VERSION_FILE"
+
+			expected := "Error reading VERSION file, malformed"
+
+			_, err := generic()
+
+			actual := err.Error()
+			g.Assert(actual).Equal(expected)
+		})
+
+	})
+}