537 lines
12 KiB
Zig
537 lines
12 KiB
Zig
const assert = @import("std").debug.assert;
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const mem = @import("std").mem;
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const cstr = @import("std").cstr;
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const builtin = @import("builtin");
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// normal comment
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/// this is a documentation comment
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/// doc comment line 2
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fn emptyFunctionWithComments() {}
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test "empty function with comments" {
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emptyFunctionWithComments();
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}
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export fn disabledExternFn() {
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@setGlobalLinkage(disabledExternFn, builtin.GlobalLinkage.Internal);
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}
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test "call disabled extern fn" {
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disabledExternFn();
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}
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test "@IntType builtin" {
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assert(@IntType(true, 8) == i8);
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assert(@IntType(true, 16) == i16);
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assert(@IntType(true, 32) == i32);
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assert(@IntType(true, 64) == i64);
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assert(@IntType(false, 8) == u8);
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assert(@IntType(false, 16) == u16);
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assert(@IntType(false, 32) == u32);
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assert(@IntType(false, 64) == u64);
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assert(i8.bit_count == 8);
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assert(i16.bit_count == 16);
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assert(i32.bit_count == 32);
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assert(i64.bit_count == 64);
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assert(i8.is_signed);
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assert(i16.is_signed);
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assert(i32.is_signed);
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assert(i64.is_signed);
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assert(isize.is_signed);
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assert(!u8.is_signed);
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assert(!u16.is_signed);
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assert(!u32.is_signed);
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assert(!u64.is_signed);
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assert(!usize.is_signed);
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}
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test "floating point primitive bit counts" {
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assert(f32.bit_count == 32);
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assert(f64.bit_count == 64);
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}
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const u1 = @IntType(false, 1);
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const u63 = @IntType(false, 63);
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const i1 = @IntType(true, 1);
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const i63 = @IntType(true, 63);
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test "@minValue and @maxValue" {
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assert(@maxValue(u1) == 1);
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assert(@maxValue(u8) == 255);
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assert(@maxValue(u16) == 65535);
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assert(@maxValue(u32) == 4294967295);
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assert(@maxValue(u64) == 18446744073709551615);
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assert(@maxValue(i1) == 0);
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assert(@maxValue(i8) == 127);
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assert(@maxValue(i16) == 32767);
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assert(@maxValue(i32) == 2147483647);
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assert(@maxValue(i63) == 4611686018427387903);
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assert(@maxValue(i64) == 9223372036854775807);
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assert(@minValue(u1) == 0);
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assert(@minValue(u8) == 0);
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assert(@minValue(u16) == 0);
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assert(@minValue(u32) == 0);
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assert(@minValue(u63) == 0);
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assert(@minValue(u64) == 0);
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assert(@minValue(i1) == -1);
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assert(@minValue(i8) == -128);
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assert(@minValue(i16) == -32768);
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assert(@minValue(i32) == -2147483648);
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assert(@minValue(i63) == -4611686018427387904);
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assert(@minValue(i64) == -9223372036854775808);
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}
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test "max value type" {
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// If the type of @maxValue(i32) was i32 then this implicit cast to
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// u32 would not work. But since the value is a number literal,
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// it works fine.
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const x: u32 = @maxValue(i32);
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assert(x == 2147483647);
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}
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test "short circuit" {
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testShortCircuit(false, true);
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comptime testShortCircuit(false, true);
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}
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fn testShortCircuit(f: bool, t: bool) {
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var hit_1 = f;
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var hit_2 = f;
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var hit_3 = f;
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var hit_4 = f;
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if (t or {assert(f); f}) {
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hit_1 = t;
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}
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if (f or { hit_2 = t; f }) {
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assert(f);
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}
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if (t and { hit_3 = t; f }) {
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assert(f);
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}
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if (f and {assert(f); f}) {
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assert(f);
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} else {
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hit_4 = t;
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}
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assert(hit_1);
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assert(hit_2);
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assert(hit_3);
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assert(hit_4);
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}
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test "truncate" {
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assert(testTruncate(0x10fd) == 0xfd);
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}
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fn testTruncate(x: u32) -> u8 {
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@truncate(u8, x)
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}
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fn first4KeysOfHomeRow() -> []const u8 {
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"aoeu"
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}
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test "return string from function" {
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assert(mem.eql(u8, first4KeysOfHomeRow(), "aoeu"));
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}
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const g1 : i32 = 1233 + 1;
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var g2 : i32 = 0;
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test "global variables" {
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assert(g2 == 0);
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g2 = g1;
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assert(g2 == 1234);
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}
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test "memcpy and memset intrinsics" {
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var foo : [20]u8 = undefined;
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var bar : [20]u8 = undefined;
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@memset(&foo[0], 'A', foo.len);
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@memcpy(&bar[0], &foo[0], bar.len);
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if (bar[11] != 'A') unreachable;
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}
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test "builtin static eval" {
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const x : i32 = comptime {1 + 2 + 3};
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assert(x == comptime 6);
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}
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test "slicing" {
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var array : [20]i32 = undefined;
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array[5] = 1234;
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var slice = array[5..10];
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if (slice.len != 5) unreachable;
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const ptr = &slice[0];
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if (ptr[0] != 1234) unreachable;
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var slice_rest = array[10..];
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if (slice_rest.len != 10) unreachable;
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}
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test "constant equal function pointers" {
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const alias = emptyFn;
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assert(comptime {emptyFn == alias});
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}
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fn emptyFn() {}
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test "hex escape" {
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assert(mem.eql(u8, "\x68\x65\x6c\x6c\x6f", "hello"));
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}
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test "string concatenation" {
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assert(mem.eql(u8, "OK" ++ " IT " ++ "WORKED", "OK IT WORKED"));
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}
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test "array mult operator" {
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assert(mem.eql(u8, "ab" ** 5, "ababababab"));
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}
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test "string escapes" {
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assert(mem.eql(u8, "\"", "\x22"));
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assert(mem.eql(u8, "\'", "\x27"));
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assert(mem.eql(u8, "\n", "\x0a"));
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assert(mem.eql(u8, "\r", "\x0d"));
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assert(mem.eql(u8, "\t", "\x09"));
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assert(mem.eql(u8, "\\", "\x5c"));
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assert(mem.eql(u8, "\u1234\u0069", "\xe1\x88\xb4\x69"));
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}
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test "multiline string" {
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const s1 =
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\\one
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\\two)
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\\three
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;
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const s2 = "one\ntwo)\nthree";
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assert(mem.eql(u8, s1, s2));
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}
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test "multiline C string" {
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const s1 =
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c\\one
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c\\two)
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c\\three
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;
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const s2 = c"one\ntwo)\nthree";
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assert(cstr.cmp(s1, s2) == 0);
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}
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test "type equality" {
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assert(&const u8 != &u8);
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}
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const global_a: i32 = 1234;
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const global_b: &const i32 = &global_a;
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const global_c: &const f32 = @ptrCast(&const f32, global_b);
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test "compile time global reinterpret" {
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const d = @ptrCast(&const i32, global_c);
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assert(*d == 1234);
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}
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test "explicit cast maybe pointers" {
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const a: ?&i32 = undefined;
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const b: ?&f32 = @ptrCast(?&f32, a);
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}
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test "generic malloc free" {
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const a = %%memAlloc(u8, 10);
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memFree(u8, a);
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}
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const some_mem : [100]u8 = undefined;
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fn memAlloc(comptime T: type, n: usize) -> %[]T {
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return @ptrCast(&T, &some_mem[0])[0..n];
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}
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fn memFree(comptime T: type, memory: []T) { }
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test "cast undefined" {
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const array: [100]u8 = undefined;
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const slice = ([]const u8)(array);
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testCastUndefined(slice);
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}
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fn testCastUndefined(x: []const u8) {}
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test "cast small unsigned to larger signed" {
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assert(castSmallUnsignedToLargerSigned1(200) == i16(200));
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assert(castSmallUnsignedToLargerSigned2(9999) == i64(9999));
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}
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fn castSmallUnsignedToLargerSigned1(x: u8) -> i16 { x }
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fn castSmallUnsignedToLargerSigned2(x: u16) -> i64 { x }
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test "implicit cast after unreachable" {
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assert(outer() == 1234);
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}
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fn inner() -> i32 { 1234 }
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fn outer() -> i64 {
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return inner();
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}
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test "pointer dereferencing" {
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var x = i32(3);
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const y = &x;
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*y += 1;
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assert(x == 4);
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assert(*y == 4);
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}
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test "call result of if else expression" {
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assert(mem.eql(u8, f2(true), "a"));
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assert(mem.eql(u8, f2(false), "b"));
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}
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fn f2(x: bool) -> []const u8 {
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return (if (x) fA else fB)();
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}
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fn fA() -> []const u8 { "a" }
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fn fB() -> []const u8 { "b" }
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test "const expression eval handling of variables" {
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var x = true;
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while (x) {
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x = false;
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}
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}
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test "constant enum initialization with differing sizes" {
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test3_1(test3_foo);
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test3_2(test3_bar);
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}
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const Test3Foo = enum {
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One,
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Two: f32,
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Three: Test3Point,
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};
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const Test3Point = struct {
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x: i32,
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y: i32,
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};
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const test3_foo = Test3Foo.Three{Test3Point {.x = 3, .y = 4}};
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const test3_bar = Test3Foo.Two{13};
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fn test3_1(f: &const Test3Foo) {
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switch (*f) {
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Test3Foo.Three => |pt| {
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assert(pt.x == 3);
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assert(pt.y == 4);
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},
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else => unreachable,
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}
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}
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fn test3_2(f: &const Test3Foo) {
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switch (*f) {
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Test3Foo.Two => |x| {
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assert(x == 13);
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},
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else => unreachable,
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}
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}
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test "character literals" {
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assert('\'' == single_quote);
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}
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const single_quote = '\'';
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test "take address of parameter" {
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testTakeAddressOfParameter(12.34);
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}
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fn testTakeAddressOfParameter(f: f32) {
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const f_ptr = &f;
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assert(*f_ptr == 12.34);
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}
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test "pointer comparison" {
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const a = ([]const u8)("a");
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const b = &a;
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assert(ptrEql(b, b));
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}
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fn ptrEql(a: &const []const u8, b: &const []const u8) -> bool {
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a == b
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}
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test "C string concatenation" {
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const a = c"OK" ++ c" IT " ++ c"WORKED";
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const b = c"OK IT WORKED";
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const len = cstr.len(b);
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const len_with_null = len + 1;
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{var i: u32 = 0; while (i < len_with_null) : (i += 1) {
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assert(a[i] == b[i]);
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}}
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assert(a[len] == 0);
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assert(b[len] == 0);
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}
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test "cast slice to u8 slice" {
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assert(@sizeOf(i32) == 4);
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var big_thing_array = []i32{1, 2, 3, 4};
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const big_thing_slice: []i32 = big_thing_array[0..];
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const bytes = ([]u8)(big_thing_slice);
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assert(bytes.len == 4 * 4);
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bytes[4] = 0;
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bytes[5] = 0;
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bytes[6] = 0;
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bytes[7] = 0;
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assert(big_thing_slice[1] == 0);
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const big_thing_again = ([]i32)(bytes);
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assert(big_thing_again[2] == 3);
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big_thing_again[2] = -1;
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assert(bytes[8] == @maxValue(u8));
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assert(bytes[9] == @maxValue(u8));
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assert(bytes[10] == @maxValue(u8));
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assert(bytes[11] == @maxValue(u8));
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}
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test "pointer to void return type" {
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%%testPointerToVoidReturnType();
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}
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fn testPointerToVoidReturnType() -> %void {
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const a = testPointerToVoidReturnType2();
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return *a;
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}
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const test_pointer_to_void_return_type_x = void{};
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fn testPointerToVoidReturnType2() -> &const void {
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return &test_pointer_to_void_return_type_x;
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}
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test "non const ptr to aliased type" {
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const int = i32;
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assert(?&int == ?&i32);
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}
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test "array 2D const double ptr" {
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const rect_2d_vertexes = [][1]f32 {
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[]f32{1.0},
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[]f32{2.0},
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};
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testArray2DConstDoublePtr(&rect_2d_vertexes[0][0]);
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}
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fn testArray2DConstDoublePtr(ptr: &const f32) {
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assert(ptr[0] == 1.0);
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assert(ptr[1] == 2.0);
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}
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const Tid = builtin.TypeId;
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const AStruct = struct { x: i32, };
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const AnEnum = enum { One, Two, };
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const AnEnumWithPayload = enum { One: i32, Two, };
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test "@typeId" {
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comptime {
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assert(@typeId(type) == Tid.Type);
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assert(@typeId(void) == Tid.Void);
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assert(@typeId(bool) == Tid.Bool);
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assert(@typeId(noreturn) == Tid.NoReturn);
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assert(@typeId(i8) == Tid.Int);
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assert(@typeId(u8) == Tid.Int);
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assert(@typeId(i64) == Tid.Int);
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assert(@typeId(u64) == Tid.Int);
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assert(@typeId(f32) == Tid.Float);
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assert(@typeId(f64) == Tid.Float);
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assert(@typeId(&f32) == Tid.Pointer);
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assert(@typeId([2]u8) == Tid.Array);
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assert(@typeId(AStruct) == Tid.Struct);
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assert(@typeId(@typeOf(1)) == Tid.IntLiteral);
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assert(@typeId(@typeOf(1.0)) == Tid.FloatLiteral);
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assert(@typeId(@typeOf(undefined)) == Tid.UndefinedLiteral);
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assert(@typeId(@typeOf(null)) == Tid.NullLiteral);
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assert(@typeId(?i32) == Tid.Nullable);
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assert(@typeId(%i32) == Tid.ErrorUnion);
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assert(@typeId(error) == Tid.Error);
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assert(@typeId(AnEnum) == Tid.Enum);
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assert(@typeId(@typeOf(AnEnumWithPayload.One)) == Tid.EnumTag);
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// TODO union
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assert(@typeId(fn()) == Tid.Fn);
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assert(@typeId(@typeOf(builtin)) == Tid.Namespace);
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assert(@typeId(@typeOf({this})) == Tid.Block);
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// TODO bound fn
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// TODO arg tuple
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// TODO opaque
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}
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}
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test "@canImplicitCast" {
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comptime {
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assert(@canImplicitCast(i64, i32(3)));
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assert(!@canImplicitCast(i32, f32(1.234)));
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assert(@canImplicitCast([]const u8, "aoeu"));
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}
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}
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test "@typeName" {
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comptime {
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assert(mem.eql(u8, @typeName(i64), "i64"));
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assert(mem.eql(u8, @typeName(&usize), "&usize"));
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}
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}
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test "volatile load and store" {
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var number: i32 = 1234;
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const ptr = &volatile number;
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*ptr += 1;
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assert(*ptr == 1235);
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}
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test "slice string literal has type []const u8" {
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comptime {
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assert(@typeOf("aoeu"[0..]) == []const u8);
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const array = []i32{1, 2, 3, 4};
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assert(@typeOf(array[0..]) == []const i32);
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}
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}
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test "global variable initialized to global variable array element" {
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assert(global_ptr == &gdt[0]);
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}
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const GDTEntry = struct {
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field: i32,
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};
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var gdt = []GDTEntry {
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GDTEntry {.field = 1},
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GDTEntry {.field = 2},
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};
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var global_ptr = &gdt[0];
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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() {
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|
vram[0] = 'X';
|
|
}
|