Add division/multiplication

grammar.ebnf

@@ -1,6 +1,6 @@
 expr = number | operation
 operation = number op number
-op = "+" | "-"
+op = "+" | "-" | "/" | "*"
 number = integer | floating
 floating = #"\d+\.\d+"
 integer = #"\d+"

src/math_interp/core.clj

@@ -11,6 +11,8 @@
   (case op
     "+" +
     "-" -
+    "*" *
+    "/" /
     )
   )
 

test/math_interp/core_test.clj

@@ -18,6 +18,12 @@
   (is (= 8 (math-eval "10 - 2")))
   (is (= -2 (math-eval "4 - 6"))))
 
+(deftest division
+  (is (= 2 (math-eval "8 / 4"))))
+
+(deftest multiplication
+  (is (= 10 (math-eval "5 * 2"))))
+
 (deftest coercion
   (let [res (math-eval "1 + 0.55")]
     (is (== (+ 1 0.55) res))
@@ -29,6 +35,7 @@
 
 (deftest addition-multiple-operands)
 
-(deftest operator-precedence)
+(deftest operator-precedence
+  )
 
 (deftest negative-numbers)