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// Copyright 2018 Google LLC. All Rights Reserved.
//
// 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 storage
import (
"testing"
"github.com/google/trillian/monitoring"
)
type provider struct{}
func (p *provider) LogStorage() LogStorage { return nil }
func (p *provider) AdminStorage() AdminStorage { return nil }
func (p *provider) Close() error { return nil }
func TestProviderRegistration(t *testing.T) {
for _, test := range []struct {
desc string
reg bool
wantErr bool
}{
{
desc: "works",
reg: true,
wantErr: false,
},
{
desc: "unknown provider",
reg: false,
wantErr: true,
},
} {
t.Run(test.desc, func(t *testing.T) {
called := false
name := test.desc
if test.reg {
if err := RegisterProvider(name, func(_ monitoring.MetricFactory) (Provider, error) {
called = true
return &provider{}, nil
}); err != nil {
t.Error(err)
}
}
_, err := NewProvider(name, nil)
if err != nil && !test.wantErr {
t.Fatalf("NewProvider = %v, want no error", err)
}
if err == nil && test.wantErr {
t.Fatalf("NewProvider = no error, want error")
}
if !called && !test.wantErr {
t.Fatal("Registered storage provider was not called")
}
})
}
}
func TestProviders(t *testing.T) {
if err := RegisterProvider("a", func(_ monitoring.MetricFactory) (Provider, error) {
return &provider{}, nil
}); err != nil {
t.Error(err)
}
if err := RegisterProvider("b", func(_ monitoring.MetricFactory) (Provider, error) {
return &provider{}, nil
}); err != nil {
t.Error(err)
}
sp := Providers()
if got, want := len(sp), 2; got < want {
t.Fatalf("Got %d names, want at least %d", got, want)
}
a := 0
b := 0
for _, n := range sp {
if n == "a" {
a++
}
if n == "b" {
b++
}
}
if a != 1 {
t.Errorf("Providers() gave %d 'a', want 1", a)
}
if b != 1 {
t.Errorf("Providers() gave %d 'b', want 1", b)
}
}
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