calculator_spec.rb in numeron-1.3.0

- old
+ new

@@ -74,10 +74,40 @@
     it "1e0b" do
       calc.input('123', 1, 0)
       calc.shuffle
       calc.possibilities.should have(378).items
     end
+
+    it "mays[0] is 3 and shuffle" do
+      calc.mays[0] = [3]
+      calc.shuffle
+      # 3が利用されているのは確定
+      calc.mays[0].should =~ (0..9).to_a
+      calc.mays[1].should =~ (0..9).to_a
+      calc.mays[2].should =~ (0..9).to_a
+
+      calc.possibilities.should have(216).items
+    end
+
+    context 'using slash' do
+      it 'slash 2' do
+        calc.slash(2)
+        calc.possibilities.should have(48).items
+        calc.shuffle
+        calc.possibilities.should have(48).items
+      end
+
+      it '1e1b, slash 2, shuffle' do
+        calc.input('123', 1, 1)
+        calc.possibilities.should have(42).items
+        calc.slash(2)
+        calc.possibilities.should =~ %w(021 102 243 324)
+        calc.shuffle
+        # 数字の組み合わせは 012 or 234のみなので、 (3 * 2 * 1) * 2 = 12パターン
+        calc.possibilities.should =~ %W(021 012 201 210 102 120 243 234 342 324 432 423)
+      end
+    end
   end
 
   describe '#slash' do
     # slashを使った場合は、解の可能性は 6 * (10 - n) * (n - 1)に絞られる
     # 正しくは、 s! * (10 - n) * (n - s + 2) (sはカードの枚数、 nはslash number, s!はsの階乗)
@@ -117,9 +147,129 @@
     end
 
     it 'slash 9' do
       calc.slash(9)
       calc.possibilities.should have(48).items
+    end
+  end
+
+  describe '#change' do
+    it '0, true' do
+      calc.change(0, true)
+      calc.mays[0].should == (5..9).to_a
+    end
+
+    it '1, false' do
+      calc.change(1, false)
+      calc.mays[1].should == (0..4).to_a
+    end
+
+    it '234(0e3b), change(0, false)' do
+      calc.input('234', 0, 3) # answer 342
+      calc.change(0, false) # answer 142
+      calc.mays[0].should =~ [0, 1]
+      calc.mays[1].should =~ [2, 4]
+      calc.mays[2].should =~ [2, 3]
+      calc.possibilities.should =~ %w(023 042 043 123 142 143)
+    end
+
+    it '345(0e3b), change(0, false), shuffle' do
+      calc.input('345', 0, 3) # answer 453
+      calc.change(0, false) # 253
+      calc.mays[0].should == [0, 1, 2]
+      calc.mays[1].should == [5]
+      calc.mays[2].should == [3, 4]
+      calc.possibilities.should =~ %w(054 053 153 154 253 254)
+      calc.shuffle
+      calc.mays[0].should =~ [0, 1, 2, 3, 4, 5]
+      calc.mays[1].should =~ [0, 1, 2, 3, 4, 5]
+      calc.mays[2].should =~ [0, 1, 2, 3, 4, 5]
+      # 5確定なので、 3 * 5 * 4 = 60 (5の位置3箇所) * (5を除く可能性数) * (5を除く可能性数 - 1つ前の数値)
+      calc.possibilities.should have(60).items
+    end
+
+    it '456(0e3b), change(0, false)' do
+      calc.input('456', 0, 3) # answer 564
+      calc.change(2, false)
+      calc.mays[0].should == [5]
+      calc.mays[1].should == [6]
+      calc.mays[2].should == [0, 1, 2, 3]
+      calc.possibilities.should =~ %w(560 561 562 563)
+    end
+
+    it '1e2b, 0, false' do
+      calc.input('123', 1, 2) # 132
+      calc.change(0, false) # 432
+      calc.mays[0].should == [0, 4]
+      calc.mays[1].should == [1, 2, 3]
+      calc.mays[2].should == [1, 2, 3]
+      calc.possibilities.should =~ %w(012 013 021 023 031 032 412 413 421 423 431 432)
+    end
+  end
+
+  describe '#high_and_low' do
+    it 'simple' do
+      calc.high_and_low([true, false, true])
+      calc.mays[0].should =~ [5, 6, 7, 8, 9]
+      calc.mays[1].should =~ [0, 1, 2, 3, 4]
+      calc.mays[2].should =~ [5, 6, 7, 8, 9]
+      calc.possibilities.should have(100).items
+    end
+
+    it '345(0e3b), high_and_low' do
+      calc.input('345', 0, 3) # 4 5 3
+      calc.high_and_low([false, true, false])
+      calc.mays[0].should =~ [4]
+      calc.mays[1].should =~ [5]
+      calc.mays[2].should =~ [3]
+      calc.possibilities.should == %w(453)
+    end
+
+    it '345(1e2b), high_and_low' do
+      calc.input('354', 1, 2) # 4 5 3
+      calc.high_and_low([false, true, false])
+      calc.mays[0].should =~ [3, 4]
+      calc.mays[1].should =~ [5]
+      calc.mays[2].should =~ [3, 4]
+      calc.possibilities.should == %w(453)
+    end
+
+    it '345(0e1b), high_and_low' do
+      calc.input('354', 0, 1) # 4 6 2
+      calc.high_and_low([false, true, false])
+      calc.mays[0].should =~ [0, 1, 2, 4]
+      calc.mays[1].should =~ [6, 7, 8, 9]
+      calc.mays[2].should =~ [0, 1, 2, 3]
+
+      # [4] * [6, 7, 8, 9] * [0, 1, 2] + [0, 1, 2] * [6, 7, 8, 9] * [3] = 4 * 3 * 2 = 24
+      calc.possibilities.should have(24).items
+    end
+  end
+
+  describe '#target' do
+    it 'simple' do
+      calc.target(0, 0)
+      calc.mays[0].should =~ [0]
+      calc.mays[1].should =~ (1..9).to_a
+      calc.mays[2].should =~ (1..9).to_a
+      calc.possibilities.should have(72).items
+    end
+
+    it 'target(0, nil)' do
+      calc.target(0)
+      calc.mays[0].should =~ (1..9).to_a
+      calc.mays[1].should =~ (1..9).to_a
+      calc.mays[2].should =~ (1..9).to_a
+      calc.possibilities.should have(504).items
+    end
+
+    it '123(0e3b), target(1, 1)' do
+      calc.input('123', 0, 3)
+      calc.target(1, 1)
+      calc.mays[0].should =~ [3]
+      calc.mays[1].should =~ [1]
+      calc.mays[2].should =~ [2]
+      calc.possibilities.should =~ %w(312)
     end
   end
 
   describe "scenario" do
     it "1e0b, 1e2b" do
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