Add: julia-0.6.2

Former-commit-id: ccc667cf67d569f3fb3df39aa57c2134755a7551

julia-0.6.2/share/julia/test/hashing.jl

@@ -0,0 +1,122 @@
+# This file is a part of Julia. License is MIT: https://julialang.org/license
+
+types = Any[
+    Bool,
+    Int8, UInt8, Int16, UInt16, Int32, UInt32, Int64, UInt64, Float32, Float64,
+    Rational{Int8}, Rational{UInt8}, Rational{Int16}, Rational{UInt16},
+    Rational{Int32}, Rational{UInt32}, Rational{Int64}, Rational{UInt64}
+]
+vals = vcat(
+    typemin(Int64),
+    -Int64(maxintfloat(Float64))+Int64[-4:1;],
+    typemin(Int32),
+    -Integer(maxintfloat(Float32))+(-4:1),
+    -2:2,
+    Integer(maxintfloat(Float32))+(-1:4),
+    typemax(Int32),
+    Int64(maxintfloat(Float64))+Int64[-1:4;],
+    typemax(Int64),
+)
+
+function coerce(T::Type, x)
+    if T<:Rational
+        convert(T, coerce(typeof(numerator(zero(T))), x))
+    elseif !(T<:Integer)
+        convert(T, x)
+    else
+        x % T
+    end
+end
+
+for T=types[2:end], x=vals
+    a = coerce(T,x)
+    @test hash(a,zero(UInt)) == invoke(hash, Tuple{Real, UInt}, a, zero(UInt))
+end
+
+for T=types, S=types, x=vals
+    a = coerce(T,x)
+    b = coerce(S,x)
+    #println("$(typeof(a)) $a")
+    #println("$(typeof(b)) $b")
+    @test isequal(a,b) == (hash(a)==hash(b))
+    # for y=vals
+    #     println("T=$T; S=$S; x=$x; y=$y")
+    #     c = convert(T,x//y)
+    #     d = convert(S,x//y)
+    #     @test !isequal(a,b) || hash(a)==hash(b)
+    # end
+end
+
+# issue #8619
+@test hash(nextfloat(2.0^63)) == hash(UInt64(nextfloat(2.0^63)))
+@test hash(prevfloat(2.0^64)) == hash(UInt64(prevfloat(2.0^64)))
+
+# issue #9264
+@test hash(1//6,zero(UInt)) == invoke(hash, Tuple{Real, UInt}, 1//6, zero(UInt))
+@test hash(1//6) == hash(big(1)//big(6))
+@test hash(1//6) == hash(0x01//0x06)
+
+# hashing collections (e.g. issue #6870)
+vals = Any[
+    [1,2,3,4], [1 3;2 4], Any[1,2,3,4], [1,3,2,4],
+    [1,0], [true,false], BitArray([true,false]),
+    Set([1,2,3,4]),
+    Set([1:10;]),                # these lead to different key orders
+    Set([7,9,4,10,2,3,5,8,6,1]), #
+    Dict(42 => 101, 77 => 93), Dict{Any,Any}(42 => 101, 77 => 93),
+    (1,2,3,4), (1.0,2.0,3.0,4.0), (1,3,2,4),
+    ("a","b"), (SubString("a",1,1), SubString("b",1,1)),
+    # issue #6900
+    Dict(x => x for x in 1:10),
+    Dict(7=>7,9=>9,4=>4,10=>10,2=>2,3=>3,8=>8,5=>5,6=>6,1=>1),
+    [], [1], [2], [1, 1], [1, 2], [1, 3], [2, 2], [1, 2, 2], [1, 3, 3],
+    zeros(2, 2), spzeros(2, 2), eye(2, 2), speye(2, 2),
+    sparse(ones(2, 2)), ones(2, 2), sparse([0 0; 1 0]), [0 0; 1 0],
+    [-0. 0; -0. 0.], SparseMatrixCSC(2, 2, [1, 3, 3], [1, 2], [-0., -0.])
+]
+
+for a in vals, b in vals
+    @test isequal(a,b) == (hash(a)==hash(b))
+end
+
+@test hash(SubString("--hello--",3,7)) == hash("hello")
+@test hash(:(X.x)) == hash(:(X.x))
+@test hash(:(X.x)) != hash(:(X.y))
+
+@test hash([1,2]) == hash(view([1,2,3,4],1:2))
+
+# test explicit zeros in SparseMatrixCSC
+x = sprand(10, 10, 0.5)
+x[1] = 1
+x.nzval[1] = 0
+@test hash(x) == hash(Array(x))
+
+let a = QuoteNode(1), b = QuoteNode(1.0)
+    @test (hash(a)==hash(b)) == (a==b)
+end
+
+let a = Expr(:block, TypedSlot(1, Any)),
+    b = Expr(:block, TypedSlot(1, Any)),
+    c = Expr(:block, TypedSlot(3, Any))
+    @test a == b && hash(a) == hash(b)
+    @test a != c && hash(a) != hash(c)
+    @test b != c && hash(b) != hash(c)
+end
+
+@test hash(Dict(),hash(Set())) != hash(Set(),hash(Dict()))
+
+# issue 15659
+for prec in [3, 11, 15, 16, 31, 32, 33, 63, 64, 65, 254, 255, 256, 257, 258, 1023, 1024, 1025],
+    v in Any[-0.0, 0, 1, -1, 1//10, 2//10, 3//10, 1//2, pi]
+    setprecision(prec) do
+        x = convert(BigFloat, v)
+        @test precision(x) == prec
+        num, pow, den = Base.decompose(x)
+        y = num*big(2.0)^pow/den
+        @test precision(y) == prec
+        @test isequal(x, y)
+    end
+end
+
+# issue #20744
+@test hash(:c, hash(:b, hash(:a))) != hash(:a, hash(:b, hash(:c)))