Use Aqua for quality checks (#25)

Author: jishnub

Project.toml

@@ -14,14 +14,16 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 [compat]
 ApproxFunBase = "0.3.8, 0.4, 0.5, 0.6"
 ApproxFunOrthogonalPolynomials = "0.2.3, 0.3, 0.4, 0.5"
+Aqua = "0.5"
 DomainSets = "0.4, 0.5"
 IntervalSets = "0.5, 0.6, 0.7"
 Reexport = "0.2, 1"
 julia = "1.5"
 
 [extras]
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test", "SpecialFunctions"]
+test = ["Aqua", "Test", "SpecialFunctions"]

test/runtests.jl

@@ -9,6 +9,11 @@ using IntervalSets
 using SpecialFunctions
 using Test
 
+using Aqua
+@testset "Project quality" begin
+    Aqua.test_all(ApproxFunSingularities, ambiguities=false, undefined_exports=false)
+end
+
 @testset "Sqrt" begin
     x=Fun(identity);
     @time @test sqrt(cos(π/2*x))(.1) ≈ sqrt(cos(.1π/2))