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// Copyright 2019, OpenCensus Authors
//
// 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 trace
import (
"reflect"
"testing"
)
func init() {
}
func TestAdd(t *testing.T) {
q := newEvictedQueue(3)
q.add("value1")
q.add("value2")
if wantLen, gotLen := 2, len(q.queue); wantLen != gotLen {
t.Errorf("got queue length %d want %d", gotLen, wantLen)
}
}
func (eq *evictedQueue) queueToArray() []string {
arr := make([]string, 0)
for _, value := range eq.queue {
arr = append(arr, value.(string))
}
return arr
}
func TestDropCount(t *testing.T) {
q := newEvictedQueue(3)
q.add("value1")
q.add("value2")
q.add("value3")
q.add("value1")
q.add("value4")
if wantLen, gotLen := 3, len(q.queue); wantLen != gotLen {
t.Errorf("got queue length %d want %d", gotLen, wantLen)
}
if wantDropCount, gotDropCount := 2, q.droppedCount; wantDropCount != gotDropCount {
t.Errorf("got drop count %d want %d", gotDropCount, wantDropCount)
}
wantArr := []string{"value3", "value1", "value4"}
gotArr := q.queueToArray()
if wantLen, gotLen := len(wantArr), len(gotArr); gotLen != wantLen {
t.Errorf("got array len %d want %d", gotLen, wantLen)
}
if !reflect.DeepEqual(gotArr, wantArr) {
t.Errorf("got array = %#v; want %#v", gotArr, wantArr)
}
}
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