69 lines
1.6 KiB
Zig
69 lines
1.6 KiB
Zig
const builtin = @import("builtin");
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const std = @import("std");
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const expect = std.testing.expect;
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test "switch on empty enum" {
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if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
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const E = enum {};
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var e: E = undefined;
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switch (e) {}
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}
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test "switch on empty enum with a specified tag type" {
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if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
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const E = enum(u8) {};
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var e: E = undefined;
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switch (e) {}
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}
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test "switch on empty auto numbered tagged union" {
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
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const U = union(enum(u8)) {};
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var u: U = undefined;
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switch (u) {}
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}
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test "switch on empty tagged union" {
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
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const E = enum {};
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const U = union(E) {};
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var u: U = undefined;
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switch (u) {}
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}
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test "empty union" {
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const U = union {};
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try expect(@sizeOf(U) == 0);
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try expect(@alignOf(U) == 0);
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}
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test "empty extern union" {
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const U = extern union {};
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try expect(@sizeOf(U) == 0);
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try expect(@alignOf(U) == 1);
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}
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test "empty union passed as argument" {
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const U = union(enum) {
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fn f(u: @This()) void {
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switch (u) {}
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}
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};
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U.f(@as(U, undefined));
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}
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test "empty enum passed as argument" {
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const E = enum {
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fn f(e: @This()) void {
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switch (e) {}
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}
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};
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E.f(@as(E, undefined));
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}
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