require godog contexts to be exported

README.md

@@ -157,7 +157,7 @@ func thereShouldBeRemaining(remaining int) error {
 	return nil
 }
 
-func featureContext(s *godog.Suite) {
+func FeatureContext(s *godog.Suite) {
 	s.Step(`^there are (\d+) godogs$`, thereAreGodogs)
 	s.Step(`^I eat (\d+)$`, iEat)
 	s.Step(`^there should be (\d+) remaining$`, thereShouldBeRemaining)

builder.go

@@ -12,6 +12,7 @@ import (
 	"path/filepath"
 	"strings"
 	"text/template"
+	"unicode"
 )
 
 var godogImportPath = "github.com/DATA-DOG/godog"
@@ -215,5 +216,16 @@ func processPackageTestFiles(packs ...[]string) ([]string, error) {
 			ctxs = append(ctxs, astContexts(node)...)
 		}
 	}
+	var failed []string
+	for _, ctx := range ctxs {
+		runes := []rune(ctx)
+		if unicode.IsLower(runes[0]) {
+			expected := append([]rune{unicode.ToUpper(runes[0])}, runes[1:]...)
+			failed = append(failed, fmt.Sprintf("%s - should be: %s", ctx, string(expected)))
+		}
+	}
+	if len(failed) > 0 {
+		return ctxs, fmt.Errorf("godog contexts must be exported:\n\t%s", strings.Join(failed, "\n\t"))
+	}
 	return ctxs, nil
 }

examples/api/api_test.go

@@ -67,7 +67,7 @@ func (a *apiFeature) theResponseShouldMatchJSON(body *gherkin.DocString) (err er
 	return
 }
 
-func featureContext(s *godog.Suite) {
+func FeatureContext(s *godog.Suite) {
 	api := &apiFeature{}
 
 	s.BeforeScenario(api.resetResponse)

examples/db/api_test.go

@@ -8,7 +8,6 @@ import (
 	"net/http/httptest"
 	"strings"
 
-	"github.com/DATA-DOG/go-txdb"
 	"github.com/DATA-DOG/godog"
 	"github.com/DATA-DOG/godog/gherkin"
 )
@@ -118,7 +117,7 @@ func (a *apiFeature) thereAreUsers(users *gherkin.DataTable) error {
 	return nil
 }
 
-func featureContext(s *godog.Suite) {
+func FeatureContext(s *godog.Suite) {
 	api := &apiFeature{}
 
 	s.BeforeScenario(api.resetResponse)

examples/godogs/godog_test.go

@@ -26,7 +26,7 @@ func thereShouldBeRemaining(remaining int) error {
 	return nil
 }
 
-func featureContext(s *godog.Suite) {
+func FeatureContext(s *godog.Suite) {
 	s.Step(`^there are (\d+) godogs$`, thereAreGodogs)
 	s.Step(`^I eat (\d+)$`, iEat)
 	s.Step(`^there should be (\d+) remaining$`, thereShouldBeRemaining)

features/snippets.feature

@@ -28,7 +28,7 @@ Feature: undefined step snippets
               return godog.ErrPending
       }
 
-      func featureContext(s *godog.Suite) {
+      func FeatureContext(s *godog.Suite) {
               s.Step(`^I send "([^"]*)" request to "([^"]*)"$`, iSendRequestTo)
               s.Step(`^the response code should be (\d+)$`, theResponseCodeShouldBe)
       }
@@ -56,7 +56,7 @@ Feature: undefined step snippets
               return godog.ErrPending
       }
 
-      func featureContext(s *godog.Suite) {
+      func FeatureContext(s *godog.Suite) {
               s.Step(`^I send "([^"]*)" request to "([^"]*)" with:$`, iSendRequestToWith)
               s.Step(`^the response code should be (\d+) and header "([^"]*)" should be "([^"]*)"$`, theResponseCodeShouldBeAndHeaderShouldBe)
       }
@@ -87,7 +87,7 @@ Feature: undefined step snippets
               return godog.ErrPending
       }
 
-      func featureContext(s *godog.Suite) {
+      func FeatureContext(s *godog.Suite) {
               s.Step(`^I pull from github\.com$`, iPullFromGithubcom)
               s.Step(`^the project should be there$`, theProjectShouldBeThere)
       }

fmt.go

@@ -30,7 +30,7 @@ var undefinedSnippetsTpl = template.Must(template.New("snippets").Funcs(snippetH
 	return godog.ErrPending
 }
 
-{{end}}func featureContext(s *godog.Suite) { {{ range . }}
+{{end}}func FeatureContext(s *godog.Suite) { {{ range . }}
 	s.Step({{ backticked .Expr }}, {{ .Method }}){{end}}
 }
 `))