(t *testing.T)
| 48 | } |
| 49 | |
| 50 | func TestMultipleHostModuleInstances(t *testing.T) { |
| 51 | ctx := context.Background() |
| 52 | |
| 53 | runtime := wazero.NewRuntime(ctx) |
| 54 | defer runtime.Close(ctx) |
| 55 | |
| 56 | // three copies, all share the same host module name but different state |
| 57 | instance0 := wazergo.MustInstantiate(ctx, runtime, hostModule, answer(0)) |
| 58 | instance1 := wazergo.MustInstantiate(ctx, runtime, hostModule, answer(21)) |
| 59 | instance2 := wazergo.MustInstantiate(ctx, runtime, hostModule, answer(42)) |
| 60 | |
| 61 | defer instance0.Close(ctx) |
| 62 | defer instance1.Close(ctx) |
| 63 | defer instance2.Close(ctx) |
| 64 | |
| 65 | guest, err := loadModule(ctx, runtime, "testdata/answer.wasm") |
| 66 | if err != nil { |
| 67 | t.Fatal(err) |
| 68 | } |
| 69 | defer guest.Close(ctx) |
| 70 | |
| 71 | answer := guest.ExportedFunction("answer") |
| 72 | r0, _ := answer.Call(wazergo.WithModuleInstance(ctx, instance0)) |
| 73 | r1, _ := answer.Call(wazergo.WithModuleInstance(ctx, instance1)) |
| 74 | r2, _ := answer.Call(wazergo.WithModuleInstance(ctx, instance2)) |
| 75 | |
| 76 | for i, test := range [...]struct{ want, got int }{ |
| 77 | {want: 0, got: int(r0[0])}, |
| 78 | {want: 21, got: int(r1[0])}, |
| 79 | {want: 42, got: int(r2[0])}, |
| 80 | } { |
| 81 | if test.want != test.got { |
| 82 | t.Errorf("result %d is wrong: want=%d got=%d", i, test.want, test.got) |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | func loadModule(ctx context.Context, runtime wazero.Runtime, filePath string) (api.Module, error) { |
| 88 | b, err := os.ReadFile(filePath) |
nothing calls this directly
no test coverage detected