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fmt_test.v
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fmt_test.v
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// Copyright (c) 2019-2024 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
import os
import term
import benchmark
import v.ast
import v.fmt
import v.parser
import v.pref
import v.util.diff
import v.util.vtest
const vroot = @VEXEROOT
const fpref = &pref.Preferences{
is_fmt: true
}
fn run_fmt(mut input_files []string) {
fmt_message := 'vfmt tests'
eprintln(term.header(fmt_message, '-'))
tmpfolder := os.temp_dir()
diff_cmd := diff.find_working_diff_command() or { '' }
assert input_files.len > 0
input_files = vtest.filter_vtest_only(input_files)
if input_files.len == 0 {
// No need to produce a failing test here.
eprintln('no tests found with VTEST_ONLY filter set to: ' + os.getenv('VTEST_ONLY'))
exit(0)
}
mut fmt_bench := benchmark.new_benchmark()
fmt_bench.set_total_expected_steps(input_files.len)
for istep, ipath in input_files {
fmt_bench.cstep = istep
fmt_bench.step()
opath := ipath.replace('_input.vv', '_expected.vv')
if !os.exists(opath) {
fmt_bench.fail()
eprintln(fmt_bench.step_message_fail('missing file ${opath}'))
continue
}
expected_ocontent := os.read_file(opath) or {
fmt_bench.fail()
eprintln(fmt_bench.step_message_fail('cannot read from ${opath}'))
continue
}
mut table := ast.new_table()
file_ast := parser.parse_file(ipath, mut table, .parse_comments, fpref)
result_ocontent := fmt.fmt(file_ast, mut table, fpref, false)
if expected_ocontent != result_ocontent {
fmt_bench.fail()
eprintln(fmt_bench.step_message_fail('file ${ipath} after formatting, does not look as expected.'))
if diff_cmd == '' {
eprintln('>> sorry, but no working "diff" CLI command can be found')
continue
}
vfmt_result_file := os.join_path(tmpfolder, 'vfmt_run_over_${os.file_name(ipath)}')
os.write_file(vfmt_result_file, result_ocontent) or { panic(err) }
eprintln(diff.color_compare_files(diff_cmd, 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))
assert fmt_bench.nfail == 0
}
fn test_fmt() {
mut input_files := os.walk_ext(os.join_path(vroot, 'vlib', 'v', 'fmt', 'tests'), '_input.vv')
run_fmt(mut input_files)
}
fn test_fmt_vmodules() {
vmodules_tdir := os.join_path(vroot, 'vlib', 'v', 'fmt', 'testdata', 'vmodules')
os.setenv('VMODULES', vmodules_tdir, true)
mut input_files := os.walk_ext(vmodules_tdir, '_input.vv')
run_fmt(mut input_files)
}