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tcc_test.go
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tcc_test.go
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package cxgo
import (
"os"
"path/filepath"
"runtime/debug"
"strings"
"testing"
"github.com/stretchr/testify/require"
"github.com/gotranspile/cxgo/internal/git"
"github.com/gotranspile/cxgo/libs"
"github.com/gotranspile/cxgo/types"
)
func downloadTCC(t testing.TB, dst string) {
err := os.MkdirAll(dst, 0755)
require.NoError(t, err)
const (
repo = "https://repo.or.cz/tinycc.git"
sub = "tests/tests2"
branch = "release_0_9_27"
)
dir := filepath.Join(os.TempDir(), "cxgo_tcc_git")
_ = os.RemoveAll(dir)
t.Log("cloning", repo, "to", dir)
err = git.Clone(repo, branch, dir)
if err != nil {
os.RemoveAll(dst)
}
require.NoError(t, err)
//defer os.RemoveAll(dir)
files, err := filepath.Glob(filepath.Join(dir, sub, "*.c"))
require.NoError(t, err)
require.NotEmpty(t, files)
for _, path := range files {
base := filepath.Base(path)
err = copyFile(path, filepath.Join(dst, base))
require.NoError(t, err)
bexp := strings.TrimSuffix(base, ".c") + ".expect"
bhdr := strings.TrimSuffix(base, ".c") + ".h"
err = copyFile(filepath.Join(filepath.Dir(path), bexp), filepath.Join(dst, bexp))
require.NoError(t, err)
_ = copyFile(filepath.Join(filepath.Dir(path), bhdr), filepath.Join(dst, bhdr))
}
}
func TestTCCExecute(t *testing.T) {
if testing.Short() || os.Getenv("CXGO_RUN_TESTS_TCC") != "true" {
t.SkipNow()
}
dir := filepath.Join(testDataDir, "tcc")
ignoreTests := map[string]string{
"81_types": "incomplete types, invalid calls",
"85_asm-outside-function": "uses assembly",
"98_al_ax_extend": "uses assembly",
"99_fastcall": "uses assembly",
}
blacklist := map[string]struct{}{
"34_array_assignment": {}, // CC parsing failure
"46_grep": {},
"51_static": {},
"54_goto": {},
"55_lshift_type": {},
"60_errors_and_warnings": {},
"73_arm64": {},
"75_array_in_struct_init": {}, // FIXME: cxgo handles struct field init incorrectly?
"77_push_pop_macro": {}, // FIXME: cannot detect if a macro was redefined
"78_vla_label": {},
"79_vla_continue": {},
"87_dead_code": {},
"88_codeopt": {},
"89_nocode_wanted": {},
"90_struct-init": {},
"92_enum_bitfield": {},
"93_integer_promotion": {}, // FIXME: one issue with char promotion
"94_generic": {},
"95_bitfields": {},
"95_bitfields_ms": {},
"96_nodata_wanted": {},
"97_utf8_string_literal": {},
}
overrideExpect := map[string]string{
// TODO: printf("%f", 12.34 + 56.78); TCC: 69.120003, Go: 69.119995
"22_floating_point": "69.120003\n69.120000\n-44.440000\n700.665200\n0.217330\n1 1 0 0 0 1\n0 1 1 1 0 0\n0 0 0 1 1 1\n69.119995\n-44.439999\n700.665222\n0.217330\n12.340000\n-12.340000\n2.000000\n0.909297\n",
// TODO: we leave an additional whitespace after each line; probably tcc test trims them when checking output?
"38_multiple_array_index": "x=0: 1 2 3 4 \nx=1: 5 6 7 8 \nx=2: 9 10 11 12 \nx=3: 13 14 15 16 \n",
// TODO: we don't implement __TINYC__ and related extensions
"70_floating_point_literals": "0.123000\n122999996416.000000\n0.000000\n122999996416.000000\n\n123.123001\n123122997002240.000000\n0.000000\n123122997002240.000000\n\n123.000000\n123000003231744.000000\n0.000000\n123000003231744.000000\n\n123000003231744.000000\n0.000000\n123000003231744.000000\n\n\n428.000000\n0.000026\n428.000000\n\n1756112.000000\n0.104672\n1756592.000000\n\n1753088.000000\n0.104492\n1753088.000000\n\n1753088.000000\n0.104492\n1753088.000000\n\n\n",
// TODO: additional expected line break; probably trimmed by tcc test?
"71_macro_empty_arg": "17",
// TODO: additional expected line break; probably trimmed by tcc test?
"76_dollars_in_identifiers": "fred=10\njoe=20\nhenry=30\nfred2=10\njoe2=20\nhenry2=30\nfred10=100\njoe_10=2\nlocal=10\na100$=100\na$$=1000\na$c$b=2121\n$100=10000\n$$$=money",
// TODO: we don't support bitfields yet
"93_integer_promotion": " unsigned : s.ub\n unsigned : s.u\n unsigned : s.ullb\n unsigned : s.ull\n signed : s.c\n\n unsigned : (1 ? s.ub : 1)\n unsigned : (1 ? s.u : 1)\n unsigned : (1 ? s.ullb : 1)\n unsigned : (1 ? s.ull : 1)\n signed : (1 ? s.c : 1)\n\n unsigned : s.ub << 1\n unsigned : s.u << 1\n unsigned : s.ullb << 1\n unsigned : s.ull << 1\n signed : s.c << 1\n\n signed : +s.ub\n unsigned : +s.u\n unsigned : +s.ullb\n unsigned : +s.ull\n signed : +s.c\n\n signed : -s.ub\n unsigned : -s.u\n unsigned : -s.ullb\n unsigned : -s.ull\n signed : -s.c\n\n signed : ~s.ub\n unsigned : ~s.u\n unsigned : ~s.ullb\n unsigned : ~s.ull\n signed : ~s.c\n\n signed : !s.ub\n signed : !s.u\n signed : !s.ullb\n signed : !s.ull\n signed : !s.c\n\n unsigned : +(unsigned)s.ub\n unsigned : -(unsigned)s.ub\n unsigned : ~(unsigned)s.ub\n signed : !(unsigned)s.ub\n",
}
if _, err := os.Stat(dir); os.IsNotExist(err) {
downloadTCC(t, dir)
}
files, err := filepath.Glob(filepath.Join(dir, "*.c"))
require.NoError(t, err)
require.NotEmpty(t, files)
wd, err := os.Getwd()
require.NoError(t, err)
out := filepath.Join(os.TempDir(), "cxgo_test_tcc")
err = os.MkdirAll(out, 0755)
require.NoError(t, err)
goProject(t, out, wd)
goProjectMod(t, out)
for _, path := range files {
path := path
tname := strings.TrimSuffix(filepath.Base(path), ".c")
_, skip := blacklist[tname]
t.Run(tname, func(t *testing.T) {
if reason, ignore := ignoreTests[tname]; ignore {
t.Skip(reason)
}
//t.Parallel()
defer func() {
if r := recover(); r != nil {
if skip {
defer debug.PrintStack()
t.Skipf("panic: %v", r)
} else {
require.Nil(t, r)
}
}
if !t.Failed() && !t.Skipped() && skip {
t.Error("blacklisted test pass")
}
}()
oname := filepath.Base(path) + ".go"
env := libs.NewEnv(types.Config32())
err = Translate(filepath.Dir(path), path, out, env, Config{
Package: "main",
GoFile: oname,
MaxDecls: -1,
ForwardDecl: true,
})
failOrSkip(t, err, skip)
t.Log(path)
t.Log(filepath.Join(out, oname))
args := []string{"arg1", "arg2", "arg3", "arg4", "arg5"}
got := goRun(t, out, []string{"./" + oname}, runConfig{Arch32: true, Skip: skip}, args...)
epath := strings.TrimSuffix(path, ".c") + ".expect"
var exp []byte
if s, ok := overrideExpect[tname]; ok {
exp = []byte(s)
} else {
exp, err = os.ReadFile(epath)
require.NoError(t, err)
}
if string(exp) != string(got) && skip {
t.Skipf("unexpected output:\nexpected: %q\nactual : %q", exp, got)
}
require.Equal(t, string(exp), string(got))
})
}
}