From b1974735e1ffad5d9992c013de3f1606a95a503d Mon Sep 17 00:00:00 2001
From: beorn7 <beorn@soundcloud.com>
Date: Sat, 3 Nov 2018 22:05:26 +0100
Subject: [PATCH] Fix TestWriteToTextfile

Signed-off-by: beorn7 <beorn@soundcloud.com>
---
 prometheus/registry_test.go | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/prometheus/registry_test.go b/prometheus/registry_test.go
index fb70c29..a869d65 100644
--- a/prometheus/registry_test.go
+++ b/prometheus/registry_test.go
@@ -913,6 +913,11 @@ test_summary_count{name="foo"} 2
 		prometheus.SummaryOpts{
 			Name: "test_summary",
 			Help: "test summary",
+			Objectives: map[float64]float64{
+				0.5:  0.05,
+				0.9:  0.01,
+				0.99: 0.001,
+			},
 		},
 		[]string{"name"},
 	)
@@ -970,6 +975,9 @@ test_summary_count{name="foo"} 2
 	fileContents := string(fileBytes)
 
 	if fileContents != expectedOut {
-		t.Error("file contents didn't match unexpected")
+		t.Errorf(
+			"files don't match, got:\n%s\nwant:\n%s",
+			fileContents, expectedOut,
+		)
 	}
 }