Update SDKVersion constant to "0.1.21" in version.go

Author: ShocOne

headers/headers.go

@@ -9,6 +9,7 @@ import (
 	"github.com/deploymenttheory/go-api-http-client/apiintegrations/apihandler"
 	"github.com/deploymenttheory/go-api-http-client/authenticationhandler"
 	"github.com/deploymenttheory/go-api-http-client/headers/redact"
+	"github.com/deploymenttheory/go-api-http-client/version"
 
 	"github.com/deploymenttheory/go-api-http-client/logger"
 	"go.uber.org/zap"
@@ -97,6 +98,11 @@ func SetCustomHeader(req *http.Request, headerName, headerValue string) {
 	req.Header.Set(headerName, headerValue)
 }
 
+// SetUserAgentHeader sets the User-Agent header for an HTTP request.
+func SetUserAgentHeader() string {
+	return fmt.Sprintf("%s/%s", version.UserAgentBase, version.SDKVersion)
+}
+
 // SetRequestHeaders sets the necessary HTTP headers for a given request using the APIHandler to determine the required headers.
 func (h *HeaderHandler) SetRequestHeaders(endpoint string) {
 	// Retrieve the standard headers required for the request

headers/headers_test.go

@@ -2,11 +2,13 @@
 package headers
 
 import (
+	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 
 	"github.com/deploymenttheory/go-api-http-client/authenticationhandler"
+	"github.com/deploymenttheory/go-api-http-client/version"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -127,6 +129,14 @@ func TestSetCustomHeader(t *testing.T) {
 	assert.Equal(t, headerValue, req.Header.Get(headerName), "Custom header should be correctly set")
 }
 
+// TestSetUserAgentHeader verifies that the SetUserAgentHeader function returns the expected user agent string
+func TestSetUserAgentHeader(t *testing.T) {
+	expectedUserAgent := fmt.Sprintf("%s/%s", version.UserAgentBase, version.SDKVersion)
+	userAgent := SetUserAgentHeader()
+
+	assert.Equal(t, expectedUserAgent, userAgent, "User agent string should match expected format")
+}
+
 // TestSetRequestHeaders verifies that standard headers, including a custom Authorization header,
 // are set correctly on the HTTP request based on headers provided by a mock APIHandler.
 // TODO need to implement MockAPIHandler

version/version.go

@@ -1,13 +1,7 @@
 // version.go
 package version
 
-import "fmt"
-
 const (
 	SDKVersion    = "0.1.21"
 	UserAgentBase = "go-api-http-client"
 )
-
-func GetUserAgentHeader() string {
-	return fmt.Sprintf("%s/%s", UserAgentBase, SDKVersion)
-}