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# @brief Common functions and variables for Tool Under Test (TUT).
#
# The script requires variables:
# TUT_PATH - Assumed absolute path to the directory in which the TUT is located.
# TUT_NAME - TUT name (without path).
#
# The script sets the variables:
# TUT - The path (including the name) of the executable TUT.
# error_prompt - Delimiter on error.
# error_head - Header on error.
# Complete the path for Tool Under Test (TUT). For example, on Windows, TUT can be located in the Debug or Release
# subdirectory. Note that Release build takes precedence over Debug.
set conftypes {{} Release Debug}
foreach i $conftypes {
if { [file executable "$TUT_PATH/$i/$TUT_NAME"] || [file executable "$TUT_PATH/$i/$TUT_NAME.exe"] } {
set TUT "$TUT_PATH/$i/$TUT_NAME"
break
}
}
if {![info exists TUT]} {
error "$TUT_NAME executable not found"
}
# prompt of error message
set error_prompt ">>>"
# the beginning of error message
set error_head "$error_prompt Check-failed"
# Run commands from command line
tcltest::loadTestedCommands
# namespace of internal functions
namespace eval ly::private {
namespace export *
}
# Run the process with arguments.
# Parameter cmd is a string with arguments.
# Parameter wrn is a flag. Set to 1 if stderr should be ignored.
# Returns a pair where the first is the return code and the second is the output.
proc ly::private::ly_exec {cmd {wrn ""}} {
global TUT
try {
set results [exec -- $TUT {*}$cmd]
set status 0
} trap CHILDSTATUS {results options} {
# return code is not 0
set status [lindex [dict get $options -errorcode] 2]
} trap NONE results {
if { $wrn == 1 } {
set status 0
} else {
error "return code is 0 but something was written to stderr:\n$results\n"
}
} trap CHILDKILLED {results options} {
set status [lindex [dict get $options -errorcode] 2]
error "process was killed: $status"
}
list $status $results
}
# Internal function.
# Check the output with pattern.
# Parameter pattern is a regex or an exact string to match.
# Parameter msg is the output to check.
# Parameter 'opt' is optional. If contains '-ex', then the 'pattern' parameter is
# used as a simple string for exact matching of the output.
proc ly::private::output_check {pattern msg {opt ""}} {
if { $opt eq "" } {
expr {![regexp -- $pattern $msg]}
} elseif { $opt eq "-ex" } {
expr {![string equal "$pattern" $msg]}
} else {
global error_head
error "$error_head unrecognized value of parameter 'opt'"
}
}
# Execute yanglint with arguments and expect success.
# Parameter cmd is a string of arguments.
# Parameter pattern is a regex or an exact string to match.
# Parameter 'opt' is optional. If contains '-ex', then the 'pattern' parameter is
# used as a simple string for exact matching of the output.
proc ly_cmd {cmd {pattern ""} {opt ""}} {
namespace import ly::private::*
lassign [ly_exec $cmd] rc msg
if { $rc != 0 } {
error "unexpected return code $rc:\n$msg\n"
}
if { $pattern ne "" && [output_check $pattern $msg $opt] } {
error "unexpected output:\n$msg\n"
}
return
}
# Execute yanglint with arguments and expect error.
# Parameter cmd is a string of arguments.
# Parameter pattern is a regex.
proc ly_cmd_err {cmd pattern} {
namespace import ly::private::*
lassign [ly_exec $cmd] rc msg
if { $rc == 0 } {
error "unexpected return code $rc"
}
if { [output_check $pattern $msg] } {
error "unexpected output:\n$msg\n"
}
return
}
# Execute yanglint with arguments, expect warning in stderr but success.
# Parameter cmd is a string of arguments.
# Parameter pattern is a regex.
proc ly_cmd_wrn {cmd pattern} {
namespace import ly::private::*
lassign [ly_exec $cmd 1] rc msg
if { $rc != 0 } {
error "unexpected return code $rc:\n$msg\n"
}
if { [output_check $pattern $msg] } {
error "unexpected output:\n$msg\n"
}
return
}
# Check if yanglint supports the specified option.
# Parameter opt is a option to be found.
# Return true if option is found otherwise false.
proc ly_opt_exists {opt} {
namespace import ly::private::*
lassign [ly_exec "--help"] rc msg
if { $rc != 0 } {
error "unexpected return code $rc:\n$msg\n"
}
if { [output_check $opt $msg] } {
return false
} else {
return true
}
}
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