env_test.go

 
/*
Copyright © 2019, 2020, 2021, 2022 Red Hat, Inc.

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
 
env_test

Documentation in literate-programming-style is available at: https://redhatinsights.github.io/insights-operator-utils/packages/env/env_test.html

 


import
 
(

	
"os"

	
"testing"


	
"github.com/RedHatInsights/insights-operator-utils/env"


)



const
 
envVariableName
 
=
 
"MY_ENV_VARIABLE"


const
 
envVariableDefaultValue
 
=
 
"fallback"

setEnvVariable sets the environment variable with check whether the set was correct or not

 
func
 
setEnvVariable
(
t
 
*
testing
.
T
,
 
envVariableName
,
 
envVariableValue
 
string
)
 
{

	
err
 
:=
 
os
.
Setenv
(
envVariableName
,
 
envVariableValue
)

	
if
 
err
 
!=
 
nil
 
{

		
t
.
Fatal
(
err
)

	
}


}

TestGetEnvExistingVariable check whether the reading from existing environment variable is correct.

 
func
 
TestGetEnvExistingVariable
(
t
 
*
testing
.
T
)
 
{

	
const
 
envVariableValue
 
=
 
"foobar"


	
setEnvVariable
(
t
,
 
envVariableName
,
 
envVariableValue
)

check the environment variable value

 
	
value
 
:=
 
env
.
GetEnv
(
envVariableName
,
 
envVariableDefaultValue
)

	
if
 
value
 
!=
 
envVariableValue
 
{

		
t
.
Fatal
(
"Environment variable has no proper value:"
,
 
value
)

	
}


}

TestGetEnvNoVariable check how the non-existent environment variable is handled.

 
func
 
TestGetEnvNoVariable
(
t
 
*
testing
.
T
)
 
{

make sure no environment variables are set up

 
	
os
.
Clearenv
(
)

check the environment variable value

 
	
value
 
:=
 
env
.
GetEnv
(
envVariableName
,
 
envVariableDefaultValue
)

	
if
 
value
 
!=
 
envVariableDefaultValue
 
{

		
t
.
Fatal
(
"Environment variable has no proper value:"
,
 
value
)

	
}


}

TestGetEnvEmptyVariable check how the existing but empty environment variable is handled.

 
func
 
TestGetEnvEmptyVariable
(
t
 
*
testing
.
T
)
 
{

	
const
 
envVariableValue
 
=
 
""


	
setEnvVariable
(
t
,
 
envVariableName
,
 
envVariableValue
)

check the environment variable value

 
	
value
 
:=
 
env
.
GetEnv
(
envVariableName
,
 
envVariableDefaultValue
)

	
if
 
value
 
!=
 
envVariableValue
 
{

		
t
.
Fatal
(
"Environment variable has no proper value:"
,
 
value
)

	
}


}