spec/achilles_spec.rb in numb-0.21.0 vs spec/achilles_spec.rb in numb-0.63.0

@@ -1,24 +1,24 @@
 describe Integer, "achilles?" do
-  ACHILLES = [72,108,200,288,392,432,500,648,675,800,864,968,
-              972,1125,1152,1323,1352,1372,1568,1800,1944,2000,
-              2312,2592,2700,2888,3087,3200,3267,3456,3528,3872,
-              3888,4000,4232,4500,4563,4608,5000,5292,5324,5400,
-              5408,5488]
-  it "returns true for Achilles numbers" do
-    ACHILLES.each do |number|
-      number.should be_achilles
+  # A052486
+  @seq = [72,108,200,288,392,432,500,648,675,800,864,968,
+          972,1125,1152,1323,1352,1372,1568,1800,1944,2000,
+          2312,2592,2700,2888,3087,3200,3267,3456,3528,3872,
+          3888,4000,4232,4500,4563,4608,5000,5292,5324,5400,
+          5408,5488].to_seq
+
+  @seq.sample(10).each do |n|
+    it "returns true for Achilles number #{n}" do
+      n.should be_achilles
     end
-  end
 
-  it "returns false for non-Achilles numbers" do
-    ((1..5487).to_a - ACHILLES).shuffle.first(10).each do |number|
-      number.should_not be_achilles
+    it "returns false for negative number #{-n}" do
+      (-n).should_not be_achilles
     end
   end
 
-  it "returns false for negative numbers" do
-    (1..5487).each do |number|
-      (-number).should_not be_achilles
+  @seq.invert.sample(10).each do |n|
+    it "returns false for non-Achilles number #{n}" do
+      n.should_not be_achilles
     end
   end
 end