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Diffstat (limited to 'test/iota.go')
-rw-r--r-- | test/iota.go | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/test/iota.go b/test/iota.go new file mode 100644 index 0000000..7187dbe --- /dev/null +++ b/test/iota.go @@ -0,0 +1,122 @@ +// 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 iota. + +package main + +func assert(cond bool, msg string) { + if !cond { + print("assertion fail: ", msg, "\n") + panic(1) + } +} + +const ( + x int = iota + y = iota + z = 1 << iota + f float32 = 2 * iota + g float32 = 4.5 * float32(iota) +) + +const ( + X = 0 + Y + Z +) + +const ( + A = 1 << iota + B + C + D + E = iota * iota + F + G +) + +const ( + a = 1 + b = iota << a + c = iota << b + d +) + +const ( + i = (a << iota) + (b * iota) + j + k + l +) + +const ( + m = iota == 0 + n +) + +const ( + p = float32(iota) + q + r +) + +const ( + s = string(iota + 'a') + t +) + +const ( + abit, amask = 1 << iota, 1<<iota - 1 + bbit, bmask = 1 << iota, 1<<iota - 1 + cbit, cmask = 1 << iota, 1<<iota - 1 +) + +func main() { + assert(x == 0, "x") + assert(y == 1, "y") + assert(z == 4, "z") + assert(f == 6.0, "f") + assert(g == 18.0, "g") + + assert(X == 0, "X") + assert(Y == 0, "Y") + assert(Z == 0, "Z") + + assert(A == 1, "A") + assert(B == 2, "B") + assert(C == 4, "C") + assert(D == 8, "D") + assert(E == 16, "E") + assert(F == 25, "F") + + assert(a == 1, "a") + assert(b == 2, "b") + assert(c == 8, "c") + assert(d == 12, "d") + + assert(i == 1, "i") + assert(j == 4, "j") + assert(k == 8, "k") + assert(l == 14, "l") + + assert(m, "m") + assert(!n, "n") + + assert(p == 0.0, "p") + assert(q == 1.0, "q") + assert(r == 2.0, "r") + + assert(s == "a", "s") + assert(t == "b", "t") + + assert(abit == 1, "abit") + assert(amask == 0, "amask") + assert(bbit == 2, "bbit") + assert(bmask == 1, "bmask") + assert(cbit == 4, "cbit") + assert(cmask == 3, "cmask") +} |