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envWrapper.go
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envWrapper.go
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// Copyright © 2018 Camunda Services GmbH (info@camunda.com)
//
// 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 zbc
import (
"flag"
"github.com/stretchr/testify/suite"
"os"
)
var env = &envWrapper{vars: make(map[string]string)}
func notInTest() bool {
return flag.Lookup("test.v") == nil
}
type envWrapper struct {
vars map[string]string
}
func (w *envWrapper) set(variable, value string) {
w.vars[variable] = value
}
func (w *envWrapper) get(variable string) string {
value := w.vars[variable]
if value == "" && notInTest() {
value = os.Getenv(variable)
}
return value
}
func (w *envWrapper) unset(variable string) {
delete(w.vars, variable)
}
func (w *envWrapper) lookup(variable string) (string, bool) {
value, ok := w.vars[variable]
if !ok && notInTest() {
value, ok = os.LookupEnv(variable)
}
return value, ok
}
func (w *envWrapper) copy() map[string]string {
envDup := make(map[string]string, len(w.vars))
for envVar, val := range w.vars {
envDup[envVar] = val
}
return envDup
}
func (w *envWrapper) overwrite(environ map[string]string) {
w.vars = environ
}
type envSuite struct {
suite.Suite
envCopy map[string]string
}
func (s *envSuite) SetupTest() {
s.envCopy = env.copy()
}
func (s *envSuite) TearDownTest() {
env.overwrite(s.envCopy)
}