add eachfactor tests

Author: oscardssmith

test/runtests.jl

@@ -239,6 +239,12 @@ end
 # factor returns a sorted dict
 @test all([issorted(collect(factor(rand(Int)))) for x in 1:100])
 
+# test eachfactor iteration
+@test iterate(eachfactor(36)) == ((2, 2), (9, 3))
+@test iterate(eachfactor(7^2*5^3)) == ((5, 3), (49, 5))
+@test iterate(eachfactor(257) == ((257, 1), (1, 257))
+@test iterate(eachfactor(nextprime(2^16))) == ((65537, 1), (1, 65537))
+                    
 # Lucas-Lehmer
 @test !ismersenneprime(2047)
 @test ismersenneprime(8191)