storage: Make tests go-vet and golint clean

storage/local/chunk/chunk_test.go

@@ -39,7 +39,10 @@ func TestLen(t *testing.T) {
 				t.Errorf("chunk type %s should have %d samples, had %d", c.Encoding(), i, c.Len())
 			}
 
-			cs, _ := c.Add(model.SamplePair{model.Time(i), model.SampleValue(i)})
+			cs, _ := c.Add(model.SamplePair{
+				Timestamp: model.Time(i),
+				Value:     model.SampleValue(i),
+			})
 			c = cs[0]
 		}
 	}

storage/local/noop_storage.go

@@ -45,6 +45,9 @@ func (s *NoopStorage) Querier() (Querier, error) {
 	return &NoopQuerier{}, nil
 }
 
+// NoopQuerier is a dummy Querier for use when Prometheus's local storage is
+// disabled. It is returned by the NoopStorage Querier method and always returns
+// empty results.
 type NoopQuerier struct{}
 
 // Close implements Querier.

storage/local/storage_test.go

@@ -319,31 +319,31 @@ func TestFingerprintsForLabels(t *testing.T) {
 		expected model.Fingerprints
 	}{
 		{
-			pairs:    []model.LabelPair{{"label1", "x"}},
+			pairs:    []model.LabelPair{{Name: "label1", Value: "x"}},
 			expected: fingerprints[:0],
 		},
 		{
-			pairs:    []model.LabelPair{{"label1", "test_0"}},
+			pairs:    []model.LabelPair{{Name: "label1", Value: "test_0"}},
 			expected: fingerprints[:10],
 		},
 		{
 			pairs: []model.LabelPair{
-				{"label1", "test_0"},
-				{"label1", "test_1"},
+				{Name: "label1", Value: "test_0"},
+				{Name: "label1", Value: "test_1"},
 			},
 			expected: fingerprints[:0],
 		},
 		{
 			pairs: []model.LabelPair{
-				{"label1", "test_0"},
-				{"label2", "test_1"},
+				{Name: "label1", Value: "test_0"},
+				{Name: "label2", Value: "test_1"},
 			},
 			expected: fingerprints[5:10],
 		},
 		{
 			pairs: []model.LabelPair{
-				{"label1", "test_1"},
-				{"label2", "test_2"},
+				{Name: "label1", Value: "test_1"},
+				{Name: "label2", Value: "test_2"},
 			},
 			expected: fingerprints[15:20],
 		},