From a98f0170cf9b0ee69729ecc778bb314f9f61b7ef Mon Sep 17 00:00:00 2001
From: iamqizhao <toqizhao@gmail.com>
Date: Wed, 16 Dec 2015 11:36:52 -0800
Subject: [PATCH] fix some print format errors

---
 metadata/metadata_test.go | 2 +-
 picker.go                 | 2 +-
 test/end2end_test.go      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/metadata/metadata_test.go b/metadata/metadata_test.go
index b2082d01..02e6ba51 100644
--- a/metadata/metadata_test.go
+++ b/metadata/metadata_test.go
@@ -101,7 +101,7 @@ func TestPairsMD(t *testing.T) {
 			t.Fatalf("Pairs(%v) = %v, want %v", test.kv, md, test.md)
 		}
 		if md.Len() != test.size {
-			t.Fatalf("Pairs(%v) generates md of size %d, want %d", md.Len(), test.size)
+			t.Fatalf("Pairs(%v) generates md of size %d, want %d", test.kv, md.Len(), test.size)
 		}
 	}
 }
diff --git a/picker.go b/picker.go
index b83c859b..50f315b4 100644
--- a/picker.go
+++ b/picker.go
@@ -172,7 +172,7 @@ func (p *unicastNamingPicker) processUpdates() error {
 			}
 			p.mu.Unlock()
 		default:
-			grpclog.Println("Unknown update.Op %d", update.Op)
+			grpclog.Println("Unknown update.Op ", update.Op)
 		}
 	}
 	return nil
diff --git a/test/end2end_test.go b/test/end2end_test.go
index be7691d2..71d02040 100644
--- a/test/end2end_test.go
+++ b/test/end2end_test.go
@@ -537,7 +537,7 @@ func testEmptyUnaryWithUserAgent(t *testing.T, e env) {
 	}
 	ctx, _ = context.WithTimeout(context.Background(), time.Second)
 	if _, err := cc.WaitForStateChange(ctx, grpc.Ready); err == nil {
-		t.Fatalf("cc.WaitForStateChange(_, %s) = _, %v, want _, %v", grpc.Ready, context.DeadlineExceeded)
+		t.Fatalf("cc.WaitForStateChange(_, %s) = _, <nil>, want _, %v", grpc.Ready, context.DeadlineExceeded)
 	}
 	tc := testpb.NewTestServiceClient(cc)
 	var header metadata.MD