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langref: Make pointer_coerce_const_optional test less obfuscated

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This test was originally introduced in 5f38d6e2e97829ed74f06a96b5d07a2c68516063, where it looked like this:

    test "cast *[1][*]const u8 to [*]const ?[*]const u8" {
        const window_name = [1][*]const u8{c"window name"};
        const x: [*]const ?[*]const u8 = &window_name;
        assert(mem.eql(u8, std.cstr.toSliceConst(x[0].?), "window name"));
    }

Over the years, this has become more and more obfuscated, to the point that the verbosity of the `expect` call overshadows the point of the example. This commit intends to update this test to match the spirit of the original version of the test, while shedding the obfuscation.
This commit is contained in:
Ryan Liptak 2024-07-29 03:31:18 -07:00 committed by Andrew Kelley
parent efde3ed04a
commit 73a444766e
1 changed files with 4 additions and 4 deletions
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8
doc/langref/test_pointer_coerce_const_optional.zig
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@ -2,10 +2,10 @@ const std = @import("std");
const expect = std.testing.expect; const expect = std.testing.expect;
const mem = std.mem; const mem = std.mem;
test "cast *[1][*]const u8 to [*]const ?[*]const u8" { test "cast *[1][*:0]const u8 to []const ?[*:0]const u8" {
const window_name = [1][*]const u8{"window name"}; const window_name = [1][*:0]const u8{"window name"};
const x: [*]const ?[*]const u8 = &window_name; const x: []const ?[*:0]const u8 = &window_name;
try expect(mem.eql(u8, std.mem.sliceTo(@as([*:0]const u8, @ptrCast(x[0].?)), 0), "window name")); try expect(mem.eql(u8, mem.span(x[0].?), "window name"));
} }
// test // test