| // Copyright 2020 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package fillreturns |
| |
| import ( |
| "errors" |
| "go/ast" |
| ast2 "go/ast" |
| "io" |
| "net/http" |
| . "net/http" |
| "net/url" |
| "strconv" |
| ) |
| |
| type T struct{} |
| type T1 = T |
| type I interface{} |
| type I1 = I |
| type z func(string, http.Handler) error |
| |
| func x() error { |
| return errors.New("foo") |
| } |
| |
| func b() (string, int, error) { |
| return "", errors.New("foo") // want "wrong number of return values \\(want 3, got 2\\)" |
| } |
| |
| func c() (string, int, error) { |
| return 7, errors.New("foo") // want "wrong number of return values \\(want 3, got 2\\)" |
| } |
| |
| func d() (string, int, error) { |
| return "", 7 // want "wrong number of return values \\(want 3, got 2\\)" |
| } |
| |
| func e() (T, error, *bool) { |
| return (z(http.ListenAndServe))("", nil) // want "wrong number of return values \\(want 3, got 1\\)" |
| } |
| |
| func preserveLeft() (int, int, error) { |
| return 1, errors.New("foo") // want "wrong number of return values \\(want 3, got 2\\)" |
| } |
| |
| func matchValues() (int, error, string) { |
| return errors.New("foo"), 3 // want "wrong number of return values \\(want 3, got 2\\)" |
| } |
| |
| func preventDataOverwrite() (int, string) { |
| return errors.New("foo") // want "wrong number of return values \\(want 2, got 1\\)" |
| } |
| |
| func closure() (string, error) { |
| _ = func() (int, error) { |
| return // want "wrong number of return values \\(want 2, got 0\\)" |
| } |
| return // want "wrong number of return values \\(want 2, got 0\\)" |
| } |
| |
| func basic() (uint8, uint16, uint32, uint64, int8, int16, int32, int64, float32, float64, complex64, complex128, byte, rune, uint, int, uintptr, string, bool, error) { |
| return // want "wrong number of return values \\(want 20, got 0\\)" |
| } |
| |
| func complex() (*int, []int, [2]int, map[int]int) { |
| return // want "wrong number of return values \\(want 4, got 0\\)" |
| } |
| |
| func structsAndInterfaces() (T, url.URL, T1, I, I1, io.Reader, Client, ast2.Stmt) { |
| return // want "wrong number of return values \\(want 8, got 0\\)" |
| } |
| |
| func m() (int, error) { |
| if 1 == 2 { |
| return // want "wrong number of return values \\(want 2, got 0\\)" |
| } else if 1 == 3 { |
| return errors.New("foo") // want "wrong number of return values \\(want 2, got 1\\)" |
| } else { |
| return 1 // want "wrong number of return values \\(want 2, got 1\\)" |
| } |
| return // want "wrong number of return values \\(want 2, got 0\\)" |
| } |
| |
| func convertibleTypes() (ast2.Expr, int) { |
| return &ast2.ArrayType{} // want "wrong number of return values \\(want 2, got 1\\)" |
| } |
| |
| func assignableTypes() (map[string]int, int) { |
| type X map[string]int |
| var x X |
| return x // want "wrong number of return values \\(want 2, got 1\\)" |
| } |
| |
| func interfaceAndError() (I, int) { |
| return errors.New("foo") // want "wrong number of return values \\(want 2, got 1\\)" |
| } |
| |
| func funcOneReturn() (string, error) { |
| return strconv.Itoa(1) // want "wrong number of return values \\(want 2, got 1\\)" |
| } |
| |
| func funcMultipleReturn() (int, error, string) { |
| return strconv.Atoi("1") |
| } |
| |
| func localFuncMultipleReturn() (string, int, error, string) { |
| return b() |
| } |
| |
| func multipleUnused() (int, string, string, string) { |
| return 3, 4, 5 // want "wrong number of return values \\(want 4, got 3\\)" |
| } |
| |
| func gotTooMany() int { |
| if true { |
| return 0, "" // want "wrong number of return values \\(want 1, got 2\\)" |
| } else { |
| return 1, 0, nil // want "wrong number of return values \\(want 1, got 3\\)" |
| } |
| return 0, 5, false // want "wrong number of return values \\(want 1, got 3\\)" |
| } |
| |
| func fillVars() (int, string, ast.Node, bool, error) { |
| eint := 0 |
| s := "a" |
| var t bool |
| if true { |
| err := errors.New("fail") |
| return // want "wrong number of return values \\(want 5, got 0\\)" |
| } |
| n := ast.NewIdent("ident") |
| int := 3 |
| var b bool |
| return "" // want "wrong number of return values \\(want 5, got 1\\)" |
| } |