Copy of BroadcastQuasiArray returns array (#45)

* overload copy

* Update Project.toml

* Update test_quasibroadcast.jl

* Overload ==

Author: dlfivefifty

Project.toml

@@ -1,7 +1,7 @@
 name = "QuasiArrays"
 uuid = "c4ea9172-b204-11e9-377d-29865faadc5c"
 authors = ["Sheehan Olver <solver@mac.com>"]
-version = "0.3.1"
+version = "0.3.2"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"

src/lazyquasiarrays.jl

@@ -118,6 +118,12 @@ size(A::BroadcastQuasiArray) = map(length, axes(A))
 
 IndexStyle(::BroadcastQuasiArray{<:Any,1}) = IndexLinear()
 
+function ==(A::BroadcastQuasiArray, B::BroadcastQuasiArray)
+    A.f == B.f && all(A.args .== B.args) && return true
+    error("Not implemented")
+end
+copy(A::BroadcastQuasiArray) = A # BroadcastQuasiArray are immutable
+
 @propagate_inbounds getindex(A::BroadcastQuasiArray, kj::Number...) = broadcasted(A)[kj...]
 @propagate_inbounds getindex(A::BroadcastQuasiArray{T,N}, kj::QuasiCartesianIndex{N}) where {T,N} =
     A[kj.I...]

test/test_quasibroadcast.jl

@@ -129,6 +129,7 @@ import QuasiArrays: QuasiCartesianIndex, QuasiCartesianIndices, DefaultQuasiArra
 
         @test axes(exp.(A)) == axes(B)
         @test QuasiMatrix(B) == exp.(A)
+        @test copy(B) ≡ B
 
         C = BroadcastQuasiArray(+, A, 2)
         @test C == A .+ 2