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test: add behavior tests for pointer slice-by-length

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This commit is contained in:
dweiller 2023-05-03 12:51:40 +10:00
parent cba9077cc1
commit e507f0c0aa
1 changed files with 38 additions and 0 deletions
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38
test/behavior/slice.zig
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@ -180,6 +180,17 @@ test "slicing zero length array" {
try expect(mem.eql(u32, s2, &[_]u32{}));
}
test "slicing pointer by length" {
const array = [_]u8{ 1, 2, 3, 4, 5, 6, 7, 8 };
const ptr: [*]const u8 = @ptrCast([*]const u8, &array);
const slice = ptr[1..][0..5];
try expect(slice.len == 5);
var i: usize = 0;
while (i < slice.len) : (i += 1) {
try expect(slice[i] == i + 2);
}
}
const x = @intToPtr([*]i32, 0x1000)[0..0x500];
const y = x[0x100..];
test "compile time slice of pointer to hard coded address" {
@ -503,6 +514,33 @@ test "slice syntax resulting in pointer-to-array" {
comptime try expect(@TypeOf(array[1.. :0][0..4]) == *[4:0]u8);
comptime try expect(@TypeOf(array[1.. :0][0..2 :4]) == *[2:4]u8);
}
fn testMultiPointer() !void {
var array = [5]u8{ 1, 2, 3, 4, 5 };
var ptr: [*]u8 = &array;
comptime try expect(@TypeOf(ptr[1..][0..2]) == *[2]u8);
comptime try expect(@TypeOf(ptr[1..][0..4]) == *[4]u8);
comptime try expect(@TypeOf(ptr[1..][0..2 :4]) == *[2:4]u8);
}
fn testMultiPointerLengthZ() !void {
var array = [5:0]u8{ 1, 2, 3, 4, 5 };
var ptr: [*]u8 = &array;
comptime try expect(@TypeOf(ptr[1..][0..2]) == *[2]u8);
comptime try expect(@TypeOf(ptr[1..][0..4]) == *[4:0]u8);
comptime try expect(@TypeOf(ptr[1..][0..2 :4]) == *[2:4]u8);
comptime try expect(@TypeOf(ptr[1.. :0][0..2]) == *[2]u8);
comptime try expect(@TypeOf(ptr[1.. :0][0..4]) == *[4:0]u8);
comptime try expect(@TypeOf(ptr[1.. :0][0..2 :4]) == *[2:4]u8);
var ptr_z: [*:0]u8 = &array;
comptime try expect(@TypeOf(ptr_z[1..][0..2]) == *[2]u8);
comptime try expect(@TypeOf(ptr_z[1..][0..4]) == *[4:0]u8);
comptime try expect(@TypeOf(ptr_z[1..][0..2 :4]) == *[2:4]u8);
comptime try expect(@TypeOf(ptr_z[1.. :0][0..2]) == *[2]u8);
comptime try expect(@TypeOf(ptr_z[1.. :0][0..4]) == *[4:0]u8);
comptime try expect(@TypeOf(ptr_z[1.. :0][0..2 :4]) == *[2:4]u8);
}
};
try S.doTheTest();