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vfmt: add support for _keep.vv files, that v fmt should keep without changes

This commit is contained in:
Delyan Angelov 2020-03-08 16:46:04 +02:00 committed by GitHub
parent 23b11c84b1
commit 5f08253f36
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import (
os
term
benchmark
v.fmt
v.parser
v.table
)
const (
error_missing_vexe = 1
error_failed_tests = 2
)
fn test_fmt() {
fmt_message := 'checking that v fmt keeps already formatted files *unchanged*'
eprintln(term.header(fmt_message, '-'))
vexe := os.getenv('VEXE')
if vexe.len == 0 || !os.exists(vexe) {
eprintln('VEXE must be set')
exit(error_missing_vexe)
}
vroot := os.dir(vexe)
tmpfolder := os.tmpdir()
diff_cmd := find_working_diff_command() or {
''
}
mut fmt_bench := benchmark.new_benchmark()
keep_input_files := os.walk_ext('$vroot/vlib/v/fmt/tests', '_keep.vv')
expected_input_files := os.walk_ext('$vroot/vlib/v/fmt/tests', '_expected.vv')
mut input_files := []string
input_files << keep_input_files
input_files << expected_input_files
fmt_bench.set_total_expected_steps(input_files.len)
for istep, ipath in input_files {
fmt_bench.cstep = istep
fmt_bench.step()
ifilename := os.filename(ipath)
opath := ipath
expected_ocontent := os.read_file(opath) or {
fmt_bench.fail()
eprintln(fmt_bench.step_message_fail('cannot read from ${opath}'))
continue
}
table := table.new_table()
file_ast := parser.parse_file(ipath, table, .parse_comments)
result_ocontent := fmt.fmt(file_ast, table)
if expected_ocontent != result_ocontent {
fmt_bench.fail()
eprintln(fmt_bench.step_message_fail('file ${ipath} after formatting, does not look as expected.'))
if diff_cmd == '' {
eprintln('>> sorry, but no working "diff" CLI command can be found')
continue
}
vfmt_result_file := os.join(tmpfolder,'vfmt_run_over_${ifilename}')
os.write_file(vfmt_result_file, result_ocontent)
os.system('$diff_cmd --minimal --text --unified=2 --show-function-line="fn " "$opath" "$vfmt_result_file"')
continue
}
fmt_bench.ok()
eprintln(fmt_bench.step_message_ok('${ipath}'))
}
fmt_bench.stop()
eprintln(term.h_divider('-'))
eprintln(fmt_bench.total_message(fmt_message))
if fmt_bench.nfail > 0 {
exit(error_failed_tests)
}
}
fn find_working_diff_command() ?string {
for diffcmd in ['colordiff', 'diff', 'colordiff.exe', 'diff.exe'] {
p := os.exec('$diffcmd --version') or {
continue
}
if p.exit_code == 0 {
return diffcmd
}
}
return error('no working diff command found')
}