help_test.go

 
/*
Copyright © 2019, 2020, 2021 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
 
commands_test

Documentation in literate-programming-style is available at: https://redhatinsights.github.io/insights-operator-cli/packages/commands/help_test.html

 


import
 
(

	
"github.com/RedHatInsights/insights-operator-cli/commands"

	
"github.com/tisnik/go-capture"

	
"strings"

	
"testing"


)

TestCommandHelp checks if the command 'help' displays actual help

 
func
 
TestCommandHelp
(
t
 
*
testing
.
T
)
 
{

turn off any colorization on standard output

 
	
configureColorizer
(
)

use go-capture package to capture all writes to standard output

 
	
captured
,
 
err
 
:=
 
capture
.
StandardOutput
(
func
(
)
 
{

		
commands
.
PrintHelp
(
)

	
}
)

check if capture operation was finished correctly

 
	
if
 
err
 
!=
 
nil
 
{

		
t
.
Fatal
(
"Unable to capture standard output"
,
 
err
)

	
}

check if capture operation captures at least some output

 
	
if
 
captured
 
==
 
""
 
{

		
t
.
Fatal
(
"Standard output is empty"
)

	
}

check if header was written into standard output

 
	
if
 
!
strings
.
HasPrefix
(
captured
,
 
"HELP:"
)
 
{

		
t
.
Fatal
(
"Unexpected output:\n"
,
 
captured
)

	
}

check if message with help was written onto standard output

 
	
numlines
 
:=
 
strings
.
Count
(
captured
,
 
"\n"
)

	
if
 
numlines
 
<=
 
1
 
{

		
t
.
Fatal
(
"Help is trimmed:\n"
,
 
captured
)

	
}


}