move dependencies to vendor

vendor/github.com/docker/libcompose/lookup/simple_env_test.go

@@ -0,0 +1,31 @@
+package lookup
+
+import (
+	"testing"
+
+	"github.com/docker/libcompose/project"
+)
+
+func TestOsEnvLookup(t *testing.T) {
+	// Putting bare minimun value for serviceName and config as there are
+	// not important on this test.
+	serviceName := "anything"
+	config := &project.ServiceConfig{}
+
+	osEnvLookup := &OsEnvLookup{}
+
+	envs := osEnvLookup.Lookup("PATH", serviceName, config)
+	if len(envs) != 1 {
+		t.Fatalf("Expected envs to contains one element, but was %v", envs)
+	}
+
+	envs = osEnvLookup.Lookup("path", serviceName, config)
+	if len(envs) != 0 {
+		t.Fatalf("Expected envs to be empty, but was %v", envs)
+	}
+
+	envs = osEnvLookup.Lookup("DOES_NOT_EXIST", serviceName, config)
+	if len(envs) != 0 {
+		t.Fatalf("Expected envs to be empty, but was %v", envs)
+	}
+}