191 lines
3.5 KiB
Zig
191 lines
3.5 KiB
Zig
const std = @import("std");
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const mem = std.mem;
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const expect = std.testing.expect;
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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() void {}
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test "empty function with comments" {
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emptyFunctionWithComments();
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}
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test "truncate" {
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try expect(testTruncate(0x10fd) == 0xfd);
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comptime try expect(testTruncate(0x10fd) == 0xfd);
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}
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fn testTruncate(x: u32) u8 {
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return @truncate(u8, x);
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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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try expect(g2 == 0);
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g2 = g1;
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try expect(g2 == 1234);
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}
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test "comptime keyword on expressions" {
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const x: i32 = comptime x: {
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break :x 1 + 2 + 3;
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};
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try expect(x == comptime 6);
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}
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test "type equality" {
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try expect(*const u8 != *u8);
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}
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test "pointer dereferencing" {
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var x = @as(i32, 3);
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const y = &x;
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y.* += 1;
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try expect(x == 4);
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try expect(y.* == 4);
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}
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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 "character literals" {
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try expect('\'' == single_quote);
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}
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const single_quote = '\'';
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test "non const ptr to aliased type" {
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const int = i32;
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try expect(?*int == ?*i32);
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}
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test "cold function" {
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thisIsAColdFn();
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comptime thisIsAColdFn();
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}
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fn thisIsAColdFn() void {
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@setCold(true);
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}
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test "unicode escape in character literal" {
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var a: u24 = '\u{01f4a9}';
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try expect(a == 128169);
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}
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test "unicode character in character literal" {
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try expect('💩' == 128169);
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}
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fn first4KeysOfHomeRow() []const u8 {
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return "aoeu";
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}
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test "return string from function" {
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try expect(mem.eql(u8, first4KeysOfHomeRow(), "aoeu"));
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}
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test "hex escape" {
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try expect(mem.eql(u8, "\x68\x65\x6c\x6c\x6f", "hello"));
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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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try expect(mem.eql(u8, s1, s2));
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}
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test "multiline string comments at start" {
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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 = "two)\nthree";
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try expect(mem.eql(u8, s1, s2));
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}
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test "multiline string comments at end" {
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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)";
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try expect(mem.eql(u8, s1, s2));
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}
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test "multiline string comments in middle" {
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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\nthree";
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try expect(mem.eql(u8, s1, s2));
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}
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test "multiline string comments at multiple places" {
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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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//\\four
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\\five
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;
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const s2 = "one\nthree\nfive";
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try expect(mem.eql(u8, s1, s2));
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}
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test "call result of if else expression" {
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try expect(mem.eql(u8, f2(true), "a"));
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try expect(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 {
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return "a";
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}
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fn fB() []const u8 {
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return "b";
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}
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test "string concatenation" {
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try expect(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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try expect(mem.eql(u8, "ab" ** 5, "ababababab"));
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}
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test "memcpy and memset intrinsics" {
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try testMemcpyMemset();
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// TODO add comptime test coverage
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//comptime try testMemcpyMemset();
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}
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fn testMemcpyMemset() !void {
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var foo: [20]u8 = undefined;
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var bar: [20]u8 = undefined;
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@memset(&foo, 'A', foo.len);
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@memcpy(&bar, &foo, bar.len);
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try expect(bar[0] == 'A');
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try expect(bar[11] == 'A');
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try expect(bar[19] == 'A');
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}
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