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Implement core API for WASM #142
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| package websocket_test | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/hex" | ||
| "fmt" | ||
| "math/rand" | ||
| "reflect" | ||
|
|
||
| "github.com/google/go-cmp/cmp" | ||
|
|
||
| "nhooyr.io/websocket" | ||
| "nhooyr.io/websocket/wsjson" | ||
| ) | ||
|
|
||
| // https://github.com/google/go-cmp/issues/40#issuecomment-328615283 | ||
| func cmpDiff(exp, act interface{}) string { | ||
| return cmp.Diff(exp, act, deepAllowUnexported(exp, act)) | ||
| } | ||
|
|
||
| func deepAllowUnexported(vs ...interface{}) cmp.Option { | ||
| m := make(map[reflect.Type]struct{}) | ||
| for _, v := range vs { | ||
| structTypes(reflect.ValueOf(v), m) | ||
| } | ||
| var typs []interface{} | ||
| for t := range m { | ||
| typs = append(typs, reflect.New(t).Elem().Interface()) | ||
| } | ||
| return cmp.AllowUnexported(typs...) | ||
| } | ||
|
|
||
| func structTypes(v reflect.Value, m map[reflect.Type]struct{}) { | ||
| if !v.IsValid() { | ||
| return | ||
| } | ||
| switch v.Kind() { | ||
| case reflect.Ptr: | ||
| if !v.IsNil() { | ||
| structTypes(v.Elem(), m) | ||
| } | ||
| case reflect.Interface: | ||
| if !v.IsNil() { | ||
| structTypes(v.Elem(), m) | ||
| } | ||
| case reflect.Slice, reflect.Array: | ||
| for i := 0; i < v.Len(); i++ { | ||
| structTypes(v.Index(i), m) | ||
| } | ||
| case reflect.Map: | ||
| for _, k := range v.MapKeys() { | ||
| structTypes(v.MapIndex(k), m) | ||
| } | ||
| case reflect.Struct: | ||
| m[v.Type()] = struct{}{} | ||
| for i := 0; i < v.NumField(); i++ { | ||
| structTypes(v.Field(i), m) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func assertEqualf(exp, act interface{}, f string, v ...interface{}) error { | ||
| if diff := cmpDiff(exp, act); diff != "" { | ||
| return fmt.Errorf(f+": %v", append(v, diff)...) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func assertJSONEcho(ctx context.Context, c *websocket.Conn, n int) error { | ||
| exp := randString(n) | ||
| err := wsjson.Write(ctx, c, exp) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| var act interface{} | ||
| err = wsjson.Read(ctx, c, &act) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return assertEqualf(exp, act, "unexpected JSON") | ||
| } | ||
|
|
||
| func assertJSONRead(ctx context.Context, c *websocket.Conn, exp interface{}) error { | ||
| var act interface{} | ||
| err := wsjson.Read(ctx, c, &act) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return assertEqualf(exp, act, "unexpected JSON") | ||
| } | ||
|
|
||
| func randBytes(n int) []byte { | ||
| b := make([]byte, n) | ||
| rand.Read(b) | ||
| return b | ||
| } | ||
|
|
||
| func randString(n int) string { | ||
| return hex.EncodeToString(randBytes(n))[:n] | ||
| } | ||
|
|
||
| func assertEcho(ctx context.Context, c *websocket.Conn, typ websocket.MessageType, n int) error { | ||
| p := randBytes(n) | ||
| err := c.Write(ctx, typ, p) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| typ2, p2, err := c.Read(ctx) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| err = assertEqualf(typ, typ2, "unexpected data type") | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return assertEqualf(p, p2, "unexpected payload") | ||
| } | ||
|
|
||
| func assertSubprotocol(c *websocket.Conn, exp string) error { | ||
| return assertEqualf(exp, c.Subprotocol(), "unexpected subprotocol") | ||
| } |
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nit: This is an abbreviation (not an acronym) so it's usually spelled "Wasm".
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Fixed.