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# This file is a part of Julia. License is MIT: https://julialang.org/license
using Random
mainres = ([4, 5, 3],
[1, 5, 3])
bitres = ([true, true, false],
[false, true, false])
chnlprod(x) = Channel(c->for i in x; put!(c,i); end)
@testset "copyto!" begin
for (dest, src, bigsrc, emptysrc, res) in [
([1, 2, 3], () -> [4, 5], () -> [1, 2, 3, 4, 5], () -> Int[], mainres),
([1, 2, 3], () -> 4:5, () -> 1:5, () -> 1:0, mainres),
([1, 2, 3], () -> chnlprod(4:5), () -> chnlprod(1:5), () -> chnlprod(1:0), mainres),
(falses(3), () -> trues(2), () -> trues(5), () -> trues(0), bitres)]
@test copyto!(copy(dest), src()) == res[1]
@test copyto!(copy(dest), 1, src()) == res[1]
@test copyto!(copy(dest), 2, src(), 2) == res[2]
@test copyto!(copy(dest), 2, src(), 2, 1) == res[2]
@test copyto!(copy(dest), 99, src(), 99, 0) == dest
@test copyto!(copy(dest), 1, emptysrc()) == dest
x = emptysrc()
exc = isa(x, AbstractArray) ? BoundsError : ArgumentError
@test_throws exc copyto!(dest, 1, emptysrc(), 1)
for idx in (0, 4)
@test_throws BoundsError copyto!(dest, idx, src())
@test_throws BoundsError copyto!(dest, idx, src(), 1)
@test_throws BoundsError copyto!(dest, idx, src(), 1, 1)
x = src()
exc = isa(x, AbstractArray) ? BoundsError : ArgumentError
@test_throws exc copyto!(dest, 1, x, idx)
x = src()
exc = isa(x, AbstractArray) ? BoundsError : ArgumentError
@test_throws exc copyto!(dest, 1, x, idx, 1)
end
@test_throws ArgumentError copyto!(dest, 1, src(), 1, -1)
@test_throws Union{BoundsError, ArgumentError} copyto!(dest, bigsrc())
@test_throws Union{BoundsError, ArgumentError} copyto!(dest, 3, src())
@test_throws Union{BoundsError, ArgumentError} copyto!(dest, 3, src(), 1)
@test_throws Union{BoundsError, ArgumentError} copyto!(dest, 3, src(), 1, 2)
@test_throws Union{BoundsError, ArgumentError} copyto!(dest, 1, src(), 2, 2)
end
end
@testset "with CartesianIndices" begin
let A = reshape(1:6, 3, 2), B = similar(A)
RA = CartesianIndices(axes(A))
copyto!(B, RA, A, RA)
@test B == A
end
let A = reshape(1:6, 3, 2), B = zeros(8,8)
RA = CartesianIndices(axes(A))
copyto!(B, CartesianIndices((5:7,2:3)), A, RA)
@test B[5:7,2:3] == A
B[5:7,2:3] .= 0
@test all(x->x==0, B)
end
end
@testset "shallow and deep copying" begin
a = Any[[1]]
q = QuoteNode([1])
ca = copy(a); dca = @inferred(deepcopy(a))
@test ca !== a
@test ca[1] === a[1]
@test dca !== a
@test dca[1] !== a[1]
@test deepcopy(q).value !== q.value
end
@testset "issue #13124" begin
a = rand(3, 5)
b = (a,a)
c = deepcopy(b)
@test c[1] === c[2]
end
# issue #14027
struct Nullable14027{T}
hasvalue::Bool
value::T
Nullable14027{T}() where {T} = new(false)
end
@test !deepcopy(Nullable14027{Array}()).hasvalue
@testset "issue #15250" begin
a1 = Core.svec(1, 2, 3, [])
a2 = Core.svec(1, 2, 3)
a3 = Core.svec(a1, a1)
b1 = deepcopy(a1)
@test a1 == b1
@test a1 !== b1
@test a1[4] !== b1[4]
b2 = deepcopy(a2)
@test a2 === b2
b3 = deepcopy(a3)
@test a3 == b3
@test a3 !== b3
@test a3[1] === a3[2]
end
@testset "issue #16667" begin
let x = BigInt[1:1000;], y = deepcopy(x), v
# Finalize the original values to make sure the deep copy is indeed
# independent
for v in x
finalize(v)
end
# Allocate some memory to make it more likely to trigger an error
# if `deepcopy` went wrong
x = BigInt[1:1000;]
@test y == x
end
let x = BigFloat[1:1000;], y, z, v
y, z = setprecision(2) do
deepcopy(x), BigFloat[1:1000;]
end
for v in x
finalize(v)
end
x = BigFloat[1:1000;]
# Make sure the difference in precision doesn't affect deep copy
@test y == x
# Check that the setprecision indeed does something
@test z != x
end
end
mutable struct Foo19921
a::String
end
mutable struct Bar19921
foo::Foo19921
fooDict::Dict{Foo19921, Int64}
end
@testset "issue 19921" begin
for i = 1 : 100
foo = Foo19921("foo")
bar = Bar19921(foo, Dict(foo => 3))
bar2 = deepcopy(bar)
@test bar2.foo ∈ keys(bar2.fooDict)
@test bar2.fooDict[bar2.foo] != nothing
end
let d = IdDict(rand(2) => rand(2) for i = 1:100)
d2 = deepcopy(d)
for k in keys(d2)
@test haskey(d2, k)
end
for k in keys(d)
@test haskey(d, k)
end
end
end
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