Updated tests for TruffleRuby [skip ci]

Author: ankane

Gemfile

@@ -6,6 +6,6 @@ gem "rake"
 gem "minitest", ">= 5"
 gem "daru"
 gem "matrix"
-gem "numo-narray", platform: [:ruby, :x64_mingw]
-gem "rover-df", platform: [:ruby, :x64_mingw]
+gem "numo-narray", platform: [:mri, :x64_mingw]
+gem "rover-df", platform: [:mri, :x64_mingw]
 gem "csv"

test/booster_test.rb

@@ -72,7 +72,7 @@ def test_predict_daru
   end
 
   def test_predict_rover
-    skip if jruby?
+    skip unless numo?
 
     require "rover"
     x_test =

test/dataset_test.rb

@@ -88,7 +88,7 @@ def test_daru
   end
 
   def test_numo
-    skip if jruby?
+    skip unless numo?
 
     data = Numo::DFloat.new(3, 5).seq
     label = Numo::DFloat.new(3).seq
@@ -100,7 +100,7 @@ def test_numo
   end
 
   def test_rover
-    skip if jruby?
+    skip unless numo?
 
     data = Rover.read_csv(data_path)
     label = data.delete("y")

test/test_helper.rb

@@ -105,6 +105,10 @@ def tempfile
   end
 
   def jruby?
-    RUBY_PLATFORM == "java"
+    RUBY_ENGINE == "jruby"
+  end
+
+  def numo?
+    !jruby? && RUBY_ENGINE != "truffleruby"
   end
 end