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// Copyright (c) 2017 Couchbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the
// License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an "AS
// IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied. See the License for the specific language
// governing permissions and limitations under the License.
// Package ghistogram provides a simple histogram of uint64's that
// avoids heap allocations (garbage creation) during data processing.
package ghistogram
import (
"strings"
"testing"
)
func initAndFetchHistograms(t *testing.T) (Histograms, string, string) {
histograms := make(Histograms)
histograms["test1"] = NewNamedHistogram("test1 (µs)", 10, 2, 2)
histograms["test2"] = NewNamedHistogram("test2 (µs)", 10, 2, 2)
histograms["test1"].Add(uint64(1), 2)
histograms["test1"].Add(uint64(3), 4)
histograms["test2"].Add(uint64(2), 1)
histograms["test2"].Add(uint64(4), 3)
test1 := `test1 (µs) (6 Total)
[0 - 2] 33.33% 33.33% ############### (2)
[2 - 4] 66.67% 100.00% ############################## (4)
`
test2 := `test2 (µs) (4 Total)
[2 - 4] 25.00% 25.00% ########## (1)
[4 - 8] 75.00% 100.00% ############################## (3)
`
return histograms, test1, test2
}
func TestStringHistograms(t *testing.T) {
histograms, exp1, exp2 := initAndFetchHistograms(t)
output := histograms.String()
if !strings.Contains(output, exp1) || !strings.Contains(output, exp2) {
t.Errorf("Unexpected content in String()")
}
}
func TestAddAllHistograms(t *testing.T) {
histograms, exp1, exp2 := initAndFetchHistograms(t)
newhistograms := make(Histograms)
newhistograms.AddAll(histograms)
output := newhistograms.String()
if !strings.Contains(output, exp1) || !strings.Contains(output, exp2) {
t.Errorf("Unexpected content in String() after AddAll")
}
}
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