v/cmd/tools/preludes/tests_assertions.v

89 lines
2.7 KiB
V

module main
import os
import term
const use_color = term.can_show_color_on_stderr()
const use_relative_paths = can_use_relative_paths()
fn can_use_relative_paths() bool {
return match os.getenv('VERROR_PATHS') {
'absolute' { false }
else { true }
}
}
// //////////////////////////////////////////////////////////////////
// / This file will get compiled as part of the main program,
// / for a _test.v file.
// / The methods defined here are called back by the test program's
// / assert statements, on each success/fail. The goal is to make
// / customizing the look & feel of the assertions results easier,
// / since it is done in normal V code, instead of in embedded C ...
// //////////////////////////////////////////////////////////////////
// TODO copy pasta builtin.v fn ___print_assert_failure
fn cb_assertion_failed(i &VAssertMetaInfo) {
filepath := if use_relative_paths { i.fpath } else { os.real_path(i.fpath) }
mut final_filepath := filepath + ':${i.line_nr + 1}:'
if use_color {
final_filepath = term.gray(final_filepath)
}
mut final_funcname := 'fn ' + i.fn_name.replace('main.', '').replace('__', '.')
if use_color {
final_funcname = term.red(' ' + final_funcname)
}
final_src := if use_color { term.dim('assert ${term.bold(i.src)}') } else { 'assert ' + i.src }
eprintln('$final_filepath $final_funcname')
if i.op.len > 0 && i.op != 'call' {
mut lvtitle := ' Left value:'
mut rvtitle := ' Right value:'
mut slvalue := '$i.lvalue'
mut srvalue := '$i.rvalue'
if use_color {
slvalue = term.yellow(slvalue)
srvalue = term.yellow(srvalue)
lvtitle = term.gray(lvtitle)
rvtitle = term.gray(rvtitle)
}
cutoff_limit := 30
if slvalue.len > cutoff_limit || srvalue.len > cutoff_limit {
eprintln(' > $final_src')
eprintln(lvtitle)
eprintln(' $slvalue')
eprintln(rvtitle)
eprintln(' $srvalue')
} else {
eprintln(' > $final_src')
eprintln(' $lvtitle $slvalue')
eprintln('$rvtitle $srvalue')
}
} else {
eprintln(' $final_src')
}
eprintln('')
}
fn cb_assertion_ok(i &VAssertMetaInfo) {
// prints for every assertion instead of per test function
// TODO: needs to be changed
/*
use_color := term.can_show_color_on_stderr()
use_relative_paths := match os.getenv('VERROR_PATHS') {
'absolute' { false }
else { true }
}
filepath := if use_relative_paths { i.fpath } else { os.real_path(i.fpath) }
final_filepath := if use_color {
term.gray(filepath + ':${i.line_nr+1}')
} else {
filepath + ':${i.line_nr+1}'
}
mut final_funcname := i.fn_name.replace('main.', '').replace('__', '.')
if use_color {
final_funcname = term.green('✓ ' + final_funcname)
}
println('$final_funcname ($final_filepath)')
*/
}