add a couple tests for untested codepaths in binomial

jiahao · Jan 5, 2015 · d877d63 · d877d63
1 parent b5bd61d
commit d877d63
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diff --git a/test/bigint.jl b/test/bigint.jl
@@ -165,6 +165,7 @@ end
 
 @test factorial(BigInt(40)) == BigInt("815915283247897734345611269596115894272000000000")
 @test binomial(BigInt(1), -1) == BigInt(0)
+@test binomial(BigInt(1), 2) == BigInt(0)
 @test binomial(BigInt(-53), 42) == BigInt("959509335087854414441273718")
 @test binomial(BigInt(113), BigInt(42)) == BigInt("18672199984318438125634054194360")
 

diff --git a/test/combinatorics.jl b/test/combinatorics.jl
@@ -1,5 +1,7 @@
 @test factorial(7) == 5040
 @test factorial(7,3) == 7*6*5*4
+@test binomial(5,-1) == 0
+@test binomial(5,10) == 0
 @test binomial(5,3) == 10
 p = shuffle([1:1000])
 @test isperm(p)