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behavior: add tests for #18816

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mlugg
2024-03-05 07:37:31 +00:00
parent a7cac5fc8e
commit 20403ee41d
4 changed files with 97 additions and 0 deletions
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21
test/behavior/enum.zig
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@@ -1242,3 +1242,24 @@ test "Non-exhaustive enum backed by comptime_int" {
e = @as(E, @enumFromInt(378089457309184723749));
try expect(@intFromEnum(e) == 378089457309184723749);
}
test "matching captures causes enum equivalence" {
const S = struct {
fn Nonexhaustive(comptime I: type) type {
const UTag = @Type(.{ .Int = .{
.signedness = .unsigned,
.bits = @typeInfo(I).Int.bits,
} });
return enum(UTag) { _ };
}
};
comptime assert(S.Nonexhaustive(u8) == S.Nonexhaustive(i8));
comptime assert(S.Nonexhaustive(u16) == S.Nonexhaustive(i16));
comptime assert(S.Nonexhaustive(u8) != S.Nonexhaustive(u16));
const a: S.Nonexhaustive(u8) = @enumFromInt(123);
const b: S.Nonexhaustive(i8) = @enumFromInt(123);
comptime assert(@TypeOf(a) == @TypeOf(b));
try expect(@intFromEnum(a) == @intFromEnum(b));
}