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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
commit | 43a123c1ae6613b3efeed291fa552ecd909d3acf (patch) | |
tree | fd92518b7024bc74031f78a1cf9e454b65e73665 /test/simassign.go | |
parent | Initial commit. (diff) | |
download | golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip |
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | test/simassign.go | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/test/simassign.go b/test/simassign.go new file mode 100644 index 0000000..6ba5c78 --- /dev/null +++ b/test/simassign.go @@ -0,0 +1,79 @@ +// run + +// Copyright 2009 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 simultaneous assignment. + +package main + +var a, b, c, d, e, f, g, h, i int + +func printit() { + println(a, b, c, d, e, f, g, h, i) +} + +func testit(permuteok bool) bool { + if a+b+c+d+e+f+g+h+i != 45 { + print("sum does not add to 45\n") + printit() + return false + } + return permuteok || + a == 1 && + b == 2 && + c == 3 && + d == 4 && + e == 5 && + f == 6 && + g == 7 && + h == 8 && + i == 9 +} + +func swap(x, y int) (u, v int) { + return y, x +} + +func main() { + a = 1 + b = 2 + c = 3 + d = 4 + e = 5 + f = 6 + g = 7 + h = 8 + i = 9 + + if !testit(false) { + panic("init val\n") + } + + for z := 0; z < 100; z++ { + a, b, c, d, e, f, g, h, i = b, c, d, a, i, e, f, g, h + + if !testit(z%20 != 19) { + print("on ", z, "th iteration\n") + printit() + panic("fail") + } + } + + if !testit(false) { + print("final val\n") + printit() + panic("fail") + } + + a, b = swap(1, 2) + if a != 2 || b != 1 { + panic("bad swap") + } + + a, b = swap(swap(a, b)) + if a != 2 || b != 1 { + panic("bad swap") + } +} |