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add behavior tests for slicing with comptime indexes

master
Andrew Kelley 2020-03-19 11:17:46 -04:00
parent f824658e13
commit 8ddf9d84ff
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1 changed files with 69 additions and 1 deletions
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70
test/stage1/behavior/slice.zig
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@ -145,15 +145,21 @@ test "@ptrCast slice to pointer" {
comptime S.doTheTest();
}
test "slicing producing an array" {
test "slice syntax resulting in pointer-to-array" {
const S = struct {
fn doTheTest() void {
testArray();
testArrayZ();
testArray0();
testArrayAlign();
testPointer();
testPointerZ();
testPointer0();
testPointerAlign();
testSlice();
testSliceZ();
testSlice0();
testSliceAlign();
}
fn testArray() void {
@ -172,6 +178,28 @@ test "slicing producing an array" {
comptime expect(@TypeOf(array[1..3 :4]) == *[2:4]u8);
}
fn testArray0() void {
{
var array = [0]u8{};
var slice = array[0..0];
comptime expect(@TypeOf(slice) == *[0]u8);
}
{
var array = [0:0]u8{};
var slice = array[0..0];
comptime expect(@TypeOf(slice) == *[0:0]u8);
expect(slice[0] == 0);
}
}
fn testArrayAlign() void {
var array align(4) = [5]u8{ 1, 2, 3, 4, 5 };
var slice = array[4..5];
comptime expect(@TypeOf(slice) == *align(4) [1]u8);
expect(slice[0] == 5);
comptime expect(@TypeOf(array[0..2]) == *align(4) [2]u8);
}
fn testPointer() void {
var array = [5]u8{ 1, 2, 3, 4, 5 };
var pointer: [*]u8 = &array;
@ -188,6 +216,22 @@ test "slicing producing an array" {
comptime expect(@TypeOf(pointer[1..3 :4]) == *[2:4]u8);
}
fn testPointer0() void {
var pointer: [*]u0 = &[1]u0{0};
var slice = pointer[0..1];
comptime expect(@TypeOf(slice) == *[1]u0);
expect(slice[0] == 0);
}
fn testPointerAlign() void {
var array align(4) = [5]u8{ 1, 2, 3, 4, 5 };
var pointer: [*]align(4) u8 = &array;
var slice = pointer[4..5];
comptime expect(@TypeOf(slice) == *align(4) [1]u8);
expect(slice[0] == 5);
comptime expect(@TypeOf(pointer[0..2]) == *align(4) [2]u8);
}
fn testSlice() void {
var array = [5]u8{ 1, 2, 3, 4, 5 };
var src_slice: []u8 = &array;
@ -204,6 +248,30 @@ test "slicing producing an array" {
comptime expect(@TypeOf(slice[1..]) == [:0]u8);
comptime expect(@TypeOf(slice[1..3 :4]) == *[2:4]u8);
}
fn testSlice0() void {
{
var array = [0]u8{};
var src_slice: []u8 = &array;
var slice = src_slice[0..0];
comptime expect(@TypeOf(slice) == *[0]u8);
}
{
var array = [0:0]u8{};
var src_slice: [:0]u8 = &array;
var slice = src_slice[0..0];
comptime expect(@TypeOf(slice) == *[0]u8);
}
}
fn testSliceAlign() void {
var array align(4) = [5]u8{ 1, 2, 3, 4, 5 };
var src_slice: []align(4) u8 = &array;
var slice = src_slice[4..5];
comptime expect(@TypeOf(slice) == *align(4) [1]u8);
expect(slice[0] == 5);
comptime expect(@TypeOf(src_slice[0..2]) == *align(4) [2]u8);
}
};
S.doTheTest();