faas/gateway/scaling/function_cache_test.go
Alex Ellis (VMware) 9cea08c728 Extract scaling from zero
- extracting this package means it can be used in other components
such as the asynchronous nats-queue-worker which may need to
invoke functions which are scaled down to zero replicas.

Ref: https://github.com/openfaas/nats-queue-worker/issues/32

Tested on Docker Swarm for scaling up, already scaled and not
found error.

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
2018-11-01 15:10:08 +00:00

116 lines
2.3 KiB
Go

// Copyright (c) OpenFaaS Author(s). All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
package scaling
import (
"testing"
"time"
)
func Test_LastRefreshSet(t *testing.T) {
before := time.Now()
fnName := "echo"
cache := FunctionCache{
Cache: make(map[string]*FunctionMeta),
Expiry: time.Millisecond * 1,
}
if cache.Cache == nil {
t.Errorf("Expected cache map to be initialized")
t.Fail()
}
cache.Set(fnName, ServiceQueryResponse{AvailableReplicas: 1})
if _, exists := cache.Cache[fnName]; !exists {
t.Errorf("Expected entry to exist after setting %s", fnName)
t.Fail()
}
if cache.Cache[fnName].LastRefresh.Before(before) {
t.Errorf("Expected LastRefresh for function to have been after start of test")
t.Fail()
}
}
func Test_CacheExpiresIn1MS(t *testing.T) {
fnName := "echo"
cache := FunctionCache{
Cache: make(map[string]*FunctionMeta),
Expiry: time.Millisecond * 1,
}
cache.Set(fnName, ServiceQueryResponse{AvailableReplicas: 1})
time.Sleep(time.Millisecond * 2)
_, hit := cache.Get(fnName)
wantHit := false
if hit != wantHit {
t.Errorf("hit, want: %v, got %v", wantHit, hit)
}
}
func Test_CacheGivesHitWithLongExpiry(t *testing.T) {
fnName := "echo"
cache := FunctionCache{
Cache: make(map[string]*FunctionMeta),
Expiry: time.Millisecond * 500,
}
cache.Set(fnName, ServiceQueryResponse{AvailableReplicas: 1})
_, hit := cache.Get(fnName)
wantHit := true
if hit != wantHit {
t.Errorf("hit, want: %v, got %v", wantHit, hit)
}
}
func Test_CacheFunctionExists(t *testing.T) {
fnName := "echo"
cache := FunctionCache{
Cache: make(map[string]*FunctionMeta),
Expiry: time.Millisecond * 10,
}
cache.Set(fnName, ServiceQueryResponse{AvailableReplicas: 1})
time.Sleep(time.Millisecond * 2)
_, hit := cache.Get(fnName)
wantHit := true
if hit != wantHit {
t.Errorf("hit, want: %v, got %v", wantHit, hit)
}
}
func Test_CacheFunctionNotExist(t *testing.T) {
fnName := "echo"
testName := "burt"
cache := FunctionCache{
Cache: make(map[string]*FunctionMeta),
Expiry: time.Millisecond * 10,
}
cache.Set(fnName, ServiceQueryResponse{AvailableReplicas: 1})
time.Sleep(time.Millisecond * 2)
_, hit := cache.Get(testName)
wantHit := false
if hit != wantHit {
t.Errorf("hit, want: %v, got %v", wantHit, hit)
}
}