Add APIServer constructor with default binary path

pkg/framework/test/apiserver.go

@@ -31,8 +31,24 @@ type certDirManager interface {
 
 //go:generate counterfeiter . certDirManager
 
-// NewAPIServer creates a new APIServer Fixture Process
-func NewAPIServer(pathToAPIServer string, config *APIServerConfig) *APIServer {
+var apiServerBinPathFinder = DefaultBinPathFinder
+
+// NewAPIServer constructs a new APIServer with whatever api_server binary it can find.
+func NewAPIServer(config *APIServerConfig) *APIServer {
+	starter := func(command *exec.Cmd, out, err io.Writer) (SimpleSession, error) {
+		return gexec.Start(command, out, err)
+	}
+
+	return &APIServer{
+		Path:           apiServerBinPathFinder("kube_apiserver"),
+		Config:         config,
+		ProcessStarter: starter,
+		CertDirManager: &TempDirManager{},
+	}
+}
+
+// NewAPIServerWithBinary creates a new APIServer Fixture Process
+func NewAPIServerWithBinary(pathToAPIServer string, config *APIServerConfig) *APIServer {
 	starter := func(command *exec.Cmd, out, err io.Writer) (SimpleSession, error) {
 		return gexec.Start(command, out, err)
 	}

pkg/framework/test/apiserver_constructor_test.go

@@ -0,0 +1,35 @@
+package test
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("NewAPIServer", func() {
+	var oldAPIServerBinPathFinder BinPathFinder
+	BeforeEach(func() {
+		oldAPIServerBinPathFinder = apiServerBinPathFinder
+	})
+	AfterEach(func() {
+		apiServerBinPathFinder = oldAPIServerBinPathFinder
+	})
+
+	It("can construct a properly configured APIServer", func() {
+		config := &APIServerConfig{
+			EtcdURL:      "some etcd URL",
+			APIServerURL: "some APIServer URL",
+		}
+		apiServerBinPathFinder = func(name string) string {
+			Expect(name).To(Equal("kube_apiserver"))
+			return "some api server path"
+		}
+
+		apiServer := NewAPIServer(config)
+
+		Expect(apiServer).NotTo(BeNil())
+		Expect(apiServer.ProcessStarter).NotTo(BeNil())
+		Expect(apiServer.CertDirManager).NotTo(BeNil())
+		Expect(apiServer.Path).To(Equal("some api server path"))
+		Expect(apiServer.Config).To(Equal(config))
+	})
+})

pkg/framework/test/fixtures.go

@@ -48,7 +48,7 @@ func NewFixtures(pathToEtcd, pathToAPIServer string) (*Fixtures, error) {
 
 	fixtures := &Fixtures{
 		Etcd:      NewEtcdWithBinaryAndConfig(pathToEtcd, etcdConfig),
-		APIServer: NewAPIServer(pathToAPIServer, apiServerConfig),
+		APIServer: NewAPIServerWithBinary(pathToAPIServer, apiServerConfig),
 	}
 
 	fixtures.Config = FixturesConfig{