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test/cannotassign.go
33 строки
1 KB
Robert Griesemer
[dev.typeparams] test: add scaffolding to run.go to check compiler with -G flag
02 дек 2020, 00:49
02 дек 2020, 00:49
72ad2f4
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// errorcheck // 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. // Test "cannot assign" errors package main func main() { var s string = "hello" s[1:2] = "a" // ERROR "cannot assign to .* (\(strings are immutable\))?" s[3] = "b" // ERROR "cannot assign to .* (\(strings are immutable\))?" const n int = 1 const cs string = "hello" n = 2 // ERROR "cannot assign to .* (\(declared const\))?" cs = "hi" // ERROR "cannot assign to .* (\(declared const\))?" true = false // ERROR "cannot assign to .* (\(declared const\))?" var m map[int]struct{ n int } m[0].n = 7 // ERROR "cannot assign to struct field .* in map$" 1 = 7 // ERROR "cannot assign to 1" "hi" = 7 // ERROR `cannot assign to "hi"` nil = 7 // ERROR "cannot assign to nil" len("") = 7 // ERROR `cannot assign to len\(""\)` []int{} = nil // ERROR "cannot assign to \[\]int\{\}" var x int = 7 x + 1 = 7 // ERROR "cannot assign to x \+ 1" }