1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: 2026 The Ebitengine Authors
3
4//go:build darwin || freebsd || linux || netbsd
5
6package purego_test
7
8import (
9 "path/filepath"
10 "slices"
11 "testing"
12
13 "github.com/bnema/purego"
14 "github.com/bnema/purego/internal/load"
15)
16
17func TestRegisterFuncStringSliceAndArray(t *testing.T) {
18 libFileName := filepath.Join(t.TempDir(), "slicetest.so")
19 if err := buildSharedLib(t, "CC", libFileName, filepath.Join("testdata", "slicetest", "slice_test.c")); err != nil {
20 t.Fatal(err)
21 }
22 lib, err := load.OpenLibrary(libFileName)
23 if err != nil {
24 t.Fatalf("Dlopen(%q) failed: %v", libFileName, err)
25 }
26 defer load.CloseLibrary(lib)
27
28 var join func([]string) string
29 purego.RegisterLibFunc(&join, lib, "join_strings")
30 var get func(int32) []string
31 purego.RegisterLibFunc(&get, lib, "get_strings")
32 var sum func([4]float32) float32
33 purego.RegisterLibFunc(&sum, lib, "sum_floats4")
34
35 t.Run("[]string argument", func(t *testing.T) {
36 if got := join([]string{"a", "bc", "def"}); got != "a,bc,def" {
37 t.Errorf("join = %q, want %q", got, "a,bc,def")
38 }
39 if got := join([]string{}); got != "" {
40 t.Errorf("join(empty) = %q, want empty", got)
41 }
42 if got := join(nil); got != "(null)" {
43 t.Errorf("join(nil) = %q, want %q", got, "(null)")
44 }
45 })
46
47 t.Run("[]string return", func(t *testing.T) {
48 if got, want := get(0), []string{"alpha", "beta", "gamma"}; !slices.Equal(got, want) {
49 t.Errorf("get = %q, want %q", got, want)
50 }
51 if got := get(1); got != nil {
52 t.Errorf("get(NULL) = %q, want nil", got)
53 }
54 })
55
56 t.Run("array argument", func(t *testing.T) {
57 if got := sum([4]float32{1, 2, 3, 4.5}); got != 10.5 {
58 t.Errorf("sum = %v, want 10.5", got)
59 }
60 })
61}