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test: improve generic type assertion test

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The test added in CL 420394 only tested that the type assertions
compiled at all. This CL changes it into a run test to make sure the
type assertions compile and also run correctly.

Updates #54135.

Change-Id: Id17469faad1bb55ff79b0bb4163ef50179330033
Reviewed-on: https://go-review.googlesource.com/c/go/+/420421
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
This commit is contained in:
Matthew Dempsky 2022-08-01 13:23:36 -07:00 committed by Gopher Robot
parent 27038b70f8
commit f2a9f3e2e0
1 changed files with 7 additions and 3 deletions
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10
test/typeparam/issue54135.go
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@ -1,4 +1,4 @@
// compile
// run
// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
@ -19,8 +19,12 @@ type Baz interface {
}
func check[T comparable](p Bar[T]) {
_, _ = p.(any)
_, _ = p.(Baz)
if x, ok := p.(any); !ok || x != p {
panic("FAIL")
}
if _, ok := p.(Baz); ok {
panic("FAIL")
}
}
func main() {