diff --git a/builder_test.go b/builder_test.go
index 820dd66..359d805 100644
--- a/builder_test.go
+++ b/builder_test.go
@@ -1,11 +1,225 @@
 package godog
 
 import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"testing"
 )
 
+var builderFeatureFile = `Feature: eat godogs
+  In order to be happy
+  As a hungry gopher
+  I need to be able to eat godogs
+
+  Scenario: Eat 5 out of 12
+    Given there are 12 godogs
+    When I eat 5
+    Then there should be 7 remaining
+`
+
+var builderTestFile = `package main
+
+import (
+	"fmt"
+
+	"github.com/DATA-DOG/godog"
+)
+
+func thereAreGodogs(available int) error {
+	Godogs = available
+	return nil
+}
+
+func iEat(num int) error {
+	if Godogs < num {
+		return fmt.Errorf("you cannot eat %d godogs, there are %d available", num, Godogs)
+	}
+	Godogs -= num
+	return nil
+}
+
+func thereShouldBeRemaining(remaining int) error {
+	if Godogs != remaining {
+		return fmt.Errorf("expected %d godogs to be remaining, but there is %d", remaining, Godogs)
+	}
+	return nil
+}
+
+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)
+
+	s.BeforeScenario(func(interface{}) {
+		Godogs = 0 // clean the state before every scenario
+	})
+}
+`
+
+var builderMainCodeFile = `package main
+
+// Godogs available to eat
+var Godogs int
+
+func main() { /* usual main func */ }
+`
+
+func buildTestPackage(dir, feat, src, testSrc string) error {
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		return err
+	}
+
+	if len(feat) > 0 {
+		if err := ioutil.WriteFile(filepath.Join(dir, "godogs.feature"), []byte(feat), 0644); err != nil {
+			return err
+		}
+	}
+	if len(src) > 0 {
+		if err := ioutil.WriteFile(filepath.Join(dir, "godogs.go"), []byte(src), 0644); err != nil {
+			return err
+		}
+	}
+	if len(testSrc) > 0 {
+		if err := ioutil.WriteFile(filepath.Join(dir, "godogs_test.go"), []byte(testSrc), 0644); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func TestGodogBuildWithSourceNotInGoPath(t *testing.T) {
+	dir := filepath.Join(os.TempDir(), "godogs")
+	err := buildTestPackage(dir, builderFeatureFile, builderMainCodeFile, builderTestFile)
+	if err != nil {
+		os.RemoveAll(dir)
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(dir)
+
+	prevDir, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := os.Chdir(dir); err != nil {
+		t.Fatal(err)
+	}
+	defer os.Chdir(prevDir)
+
+	cmd := exec.Command("godog", "godogs.feature")
+
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+
+	if err := cmd.Run(); err != nil {
+		t.Log(stdout.String())
+		t.Log(stderr.String())
+		t.Fatal(err)
+	}
+}
+
+func TestGodogBuildWithoutSourceNotInGoPath(t *testing.T) {
+	dir := filepath.Join(os.TempDir(), "godogs")
+	err := buildTestPackage(dir, builderFeatureFile, "", "")
+	if err != nil {
+		os.RemoveAll(dir)
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(dir)
+
+	prevDir, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := os.Chdir(dir); err != nil {
+		t.Fatal(err)
+	}
+	defer os.Chdir(prevDir)
+
+	cmd := exec.Command("godog", "godogs.feature")
+
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+
+	if err := cmd.Run(); err != nil {
+		t.Log(stdout.String())
+		t.Log(stderr.String())
+		t.Fatal(err)
+	}
+}
+
+func TestGodogBuildWithoutTestSourceNotInGoPath(t *testing.T) {
+	dir := filepath.Join(os.TempDir(), "godogs")
+	err := buildTestPackage(dir, builderFeatureFile, builderMainCodeFile, "")
+	if err != nil {
+		os.RemoveAll(dir)
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(dir)
+
+	prevDir, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := os.Chdir(dir); err != nil {
+		t.Fatal(err)
+	}
+	defer os.Chdir(prevDir)
+
+	cmd := exec.Command("godog", "godogs.feature")
+
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+
+	if err := cmd.Run(); err != nil {
+		t.Log(stdout.String())
+		t.Log(stderr.String())
+		t.Fatal(err)
+	}
+}
+
+func TestGodogBuildWithVendoredGodog(t *testing.T) {
+	dir := filepath.Join(os.TempDir(), "godogs")
+	err := buildTestPackage(dir, builderFeatureFile, builderMainCodeFile, builderTestFile)
+	if err != nil {
+		os.RemoveAll(dir)
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(dir)
+
+	prevDir, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := os.Chdir(dir); err != nil {
+		t.Fatal(err)
+	}
+	defer os.Chdir(prevDir)
+
+	cmd := exec.Command("godog", "godogs.feature")
+
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+
+	if err := cmd.Run(); err != nil {
+		t.Log(stdout.String())
+		t.Log(stderr.String())
+		t.Fatal(err)
+	}
+	fmt.Println(stdout.String())
+}
+
 func TestBuildTestRunner(t *testing.T) {
 	bin := filepath.Join(os.TempDir(), "godog.test")
 	if err := Build(bin); err != nil {