| 1 | const expect = @import("std").testing.expect; |
| 2 | const builtin = @import("builtin"); |
| 3 | |
| 4 | var read_count: u64 = 0; |
| 5 | |
| 6 | fn readOnce() anyerror!u64 { |
| 7 | read_count += 1; |
| 8 | return read_count; |
| 9 | } |
| 10 | |
| 11 | const FormValue = union(enum) { |
| 12 | Address: u64, |
| 13 | Other: bool, |
| 14 | }; |
| 15 | |
| 16 | fn doThing(form_id: u64) anyerror!FormValue { |
| 17 | return switch (form_id) { |
| 18 | 17 => FormValue{ .Address = try readOnce() }, |
| 19 | else => error.InvalidDebugInfo, |
| 20 | }; |
| 21 | } |
| 22 | |
| 23 | test "switch prong returns error enum" { |
| 24 | if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; |
| 25 | if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO |
| 26 | if (builtin.zig_backend == .stage2_riscv64) return error.SkipZigTest; |
| 27 | if (builtin.zig_backend == .stage2_spirv) return error.SkipZigTest; |
| 28 | |
| 29 | switch (doThing(17) catch unreachable) { |
| 30 | FormValue.Address => |payload| { |
| 31 | try expect(payload == 1); |
| 32 | }, |
| 33 | else => unreachable, |
| 34 | } |
| 35 | try expect(read_count == 1); |
| 36 | } |