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/*
* This file is part of Go Responsiveness.
*
* Go Responsiveness is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software Foundation,
* either version 2 of the License, or (at your option) any later version.
* Go Responsiveness is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with Go Responsiveness. If not, see <https://www.gnu.org/licenses/>.
*/
package utilities
import (
"context"
"log"
"sync"
"testing"
"time"
)
func TestIota(t *testing.T) {
r := Iota(6, 15)
l := 6
for _, vr := range r {
if vr != l {
log.Fatalf("Iota failed: expected %d, got %d\n", l, vr)
}
l++
}
}
func TestReadAfterCloseOnBufferedChannel(t *testing.T) {
communication := make(chan int, 100)
maxC := 0
wg := sync.WaitGroup{}
wg.Add(2)
go func() {
counter := 0
for range make([]int, 50) {
communication <- counter
counter++
}
close(communication)
wg.Done()
}()
go func() {
time.Sleep(2 * time.Second)
for c := range communication {
maxC = c
}
wg.Done()
}()
wg.Wait()
if maxC != 49 {
t.Fatalf("Did not read all sent items from a buffered channel after channel.")
}
}
func TestOrTimeoutStopsInfiniteLoop(t *testing.T) {
const TimeoutTime = 2 * time.Second
infinity := func() {
for {
}
}
timeBefore := time.Now()
OrTimeout(infinity, TimeoutTime)
timeAfter := time.Now()
if timeAfter.Sub(timeBefore) < TimeoutTime {
t.Fatalf("OrTimeout failed to keep the infinite loop running for at least %v.", TimeoutTime)
}
}
func TestFilenameAppend(t *testing.T) {
const basename = "testing.csv"
const expected = "testing-appended.csv"
result := FilenameAppend(basename, "-appended")
if expected != result {
t.Fatalf("%s != %s for FilenameAppend.", expected, result)
}
}
func TestWaitWithContext(t *testing.T) {
ctxt, canceller := context.WithCancel(context.Background())
never_true := func() bool { return false }
mu := sync.Mutex{}
cond := sync.NewCond(&mu)
wg := sync.WaitGroup{}
wg.Add(3)
go func() {
ContextSignaler(ctxt, 500*time.Millisecond, &never_true, cond)
wg.Done()
}()
go func() {
WaitWithContext(ctxt, &never_true, &mu, cond)
wg.Done()
}()
go func() {
time.Sleep(2 * time.Second)
canceller()
wg.Done()
}()
wg.Wait()
}
func TestPerSecondToInterval(t *testing.T) {
if time.Second != PerSecondToInterval(1) {
t.Fatalf("A number of nanoseconds is not equal to a second!")
}
if time.Second/2 != PerSecondToInterval(2) {
t.Fatalf("Something that happens twice per second should happen every 5000ns.")
}
}
func TestTrim(t *testing.T) {
elements := Iota(1, 101)
trimmedElements := TrimBy(elements, 75)
trimmedLength := len(trimmedElements)
trimmedLast := trimmedElements[trimmedLength-1]
if trimmedLength != 75 || trimmedLast != 75 {
t.Fatalf("When trimming, the length should be 75 but it is %d and/or the last element should be 75 but it is %d", trimmedLength, trimmedLast)
}
}
func TestTrim2(t *testing.T) {
elements := Iota(1, 11)
trimmedElements := TrimBy(elements, 75)
trimmedLength := len(trimmedElements)
trimmedLast := trimmedElements[trimmedLength-1]
if trimmedLength != 7 || trimmedLast != 7 {
t.Fatalf("When trimming, the length should be 7 but it is %d and/or the last element should be 7 but it is %d", trimmedLength, trimmedLast)
}
}
func TestTrim3(t *testing.T) {
elements := Iota(1, 6)
trimmedElements := TrimBy(elements, 101)
trimmedLength := len(trimmedElements)
trimmedLast := trimmedElements[trimmedLength-1]
if trimmedLength != 5 || trimmedLast != 5 {
t.Fatalf("When trimming, the length should be 5 but it is %d and/or the last element should be 5 but it is %d", trimmedLength, trimmedLast)
}
}
func TestTrim4(t *testing.T) {
elements := Iota(1, 11)
trimmedElements := TrimBy(elements, 81)
trimmedLength := len(trimmedElements)
trimmedLast := trimmedElements[trimmedLength-1]
if trimmedLength != 8 || trimmedLast != 8 {
t.Fatalf("When trimming, the length should be 8 but it is %d and/or the last element should be 8 but it is %d", trimmedLength, trimmedLast)
}
}
func TestTrimmedMean(t *testing.T) {
expected := 2.5
elements := []int{5, 4, 3, 2, 1}
result, elements := TrimmedMean(elements, 80)
if result != expected || len(elements) != 4 || elements[len(elements)-1] != 4 {
t.Fatalf("The trimmed mean result %v does not match the expected value %v", result, expected)
}
}
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