update tests

Author: bensadeghi

test/classification_hetero.jl

@@ -0,0 +1,20 @@
+### Classification - Heterogeneously typed features (ints, floats, bools, strings)
+
+using DecisionTree
+
+m, n = 10^2, 5;
+
+tf = [trues(Int(m/2)) falses(Int(m/2))];
+inds = randperm(m);
+labels = string.(tf[inds]);
+
+features = Array{Any}(m, n);
+features[:,:] = randn(m, n);
+features[:,2] = string.(tf[randperm(m)]);
+features[:,3] = round.(Int, features[:,3]);
+features[:,4] = tf[inds];
+
+build_tree(labels, features)
+build_forest(labels, features,2,3)
+build_stump(labels, features)
+

test/misc.jl

@@ -0,0 +1,8 @@
+### Promote Leaf to Node
+
+leaf = Leaf(0, [0])
+node = Node(1, 1, leaf, leaf)
+
+[leaf, node]
+[node, leaf]
+

test/runtests.jl

@@ -1,7 +1,7 @@
 using Base.Test
 using DecisionTree
 
-tests = ["classification_rand.jl", "regression_rand.jl",
+tests = ["classification_rand.jl", "regression_rand.jl", "classification_hetero.jl", "misc.jl",
          "classification_scikitlearn.jl", "regression_scikitlearn.jl"]
 
 println("Running tests...")