58 lines
1.3 KiB
Zig
58 lines
1.3 KiB
Zig
const std = @import("std");
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const expect = std.testing.expect;
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const expectEqualSlices = std.testing.expectEqualSlices;
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const expectEqualStrings = std.testing.expectEqualStrings;
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const mem = std.mem;
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const builtin = @import("builtin");
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// can't really run this test but we can make sure it has no compile error
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// and generates code
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const vram = @intToPtr([*]volatile u8, 0x20000000)[0..0x8000];
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export fn writeToVRam() void {
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vram[0] = 'X';
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}
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const PackedStruct = packed struct {
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a: u8,
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b: u8,
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};
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const PackedUnion = packed union {
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a: u8,
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b: u32,
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};
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test "packed struct, enum, union parameters in extern function" {
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testPackedStuff(&(PackedStruct{
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.a = 1,
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.b = 2,
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}), &(PackedUnion{ .a = 1 }));
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}
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export fn testPackedStuff(a: *const PackedStruct, b: *const PackedUnion) void {
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if (false) {
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a;
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b;
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}
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}
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test "exporting enum type and value" {
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const S = struct {
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const E = enum(c_int) { one, two };
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const e: E = .two;
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comptime {
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@export(e, .{ .name = "e" });
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}
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};
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try expect(S.e == .two);
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}
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test "exporting with internal linkage" {
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const S = struct {
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fn foo() callconv(.C) void {}
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comptime {
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@export(foo, .{ .name = "exporting_with_internal_linkage_foo", .linkage = .Internal });
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}
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};
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S.foo();
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}
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