spec/calculator_spec.rb in dentaku-2.0.8 vs spec/calculator_spec.rb in dentaku-2.0.9

@@ -140,10 +140,24 @@
       expect(result).to eq(
         more_apples: :undefined,
         more_peaches: 2
       )
     end
+
+    it "solves remainder of expressions when one cannot be evaluated" do
+      result = calculator.solve(
+        conditional: "IF(d != 0, ratio, 0)",
+        ratio:       "10/d",
+        d:           0,
+      )
+
+      expect(result).to eq(
+        conditional: 0,
+        ratio:       :undefined,
+        d:           0,
+      )
+    end
   end
 
   it 'evaluates a statement with no variables' do
     expect(calculator.evaluate('5+3')).to eq(8)
     expect(calculator.evaluate('(1+1+1)/3*100')).to eq(100)
@@ -374,9 +388,56 @@
           expect(calculator.evaluate("#{method}(1,2)")).to eq Math.send(method, 1, 2)
         else
           expect(calculator.evaluate("#{method}(1)")).to eq Math.send(method, 1)
         end
       end
+    end
+  end
+
+  describe 'disable_cache' do
+    before do
+      allow(Dentaku).to receive(:cache_ast?) { true }
+    end
+
+    it 'disables the AST cache' do
+      expect(calculator.disable_cache{ |c| c.cache_ast? }).to be false
+    end
+
+    it 'calculates normally' do
+      expect(calculator.disable_cache{ |c| c.evaluate("2 + 2") }).to eq(4)
+    end
+  end
+
+  describe 'clear_cache' do
+    before do
+      allow(Dentaku).to receive(:cache_ast?) { true }
+
+      calculator.ast("1+1")
+      calculator.ast("pineapples * 5")
+      calculator.ast("pi * radius ^ 2")
+
+      def calculator.ast_cache
+        @ast_cache
+      end
+    end
+
+    it 'clears all items from cache' do
+      expect(calculator.ast_cache.length).to eq 3
+      calculator.clear_cache
+      expect(calculator.ast_cache.keys).to be_empty
+    end
+
+    it 'clears one item from cache' do
+      calculator.clear_cache("1+1")
+      expect(calculator.ast_cache.keys.sort).to eq([
+        'pi * radius ^ 2',
+        'pineapples * 5',
+      ])
+    end
+
+    it 'clears items matching regex from cache' do
+      calculator.clear_cache(/^pi/)
+      expect(calculator.ast_cache.keys.sort).to eq(['1+1'])
     end
   end
 
   describe 'string functions' do
     it 'concatenates two strings' do