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20 lines
570 B
Zig
20 lines
570 B
Zig
const expect = @import("std").testing.expect;
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test "error union" {
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var foo: anyerror!i32 = undefined;
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// Coerce from child type of an error union:
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foo = 1234;
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// Coerce from an error set:
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foo = error.SomeError;
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// Use compile-time reflection to access the payload type of an error union:
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try comptime expect(@typeInfo(@TypeOf(foo)).ErrorUnion.payload == i32);
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// Use compile-time reflection to access the error set type of an error union:
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try comptime expect(@typeInfo(@TypeOf(foo)).ErrorUnion.error_set == anyerror);
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}
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// test
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