more code

Author: andersonkmi

src/main/scala/org/codecraftlabs/training/Rational.scala

@@ -0,0 +1,13 @@
+package org.codecraftlabs.training
+
+class Rational (n: Int, d: Int) {
+  require(d != 0)
+
+  val numer: Int = n
+  val denom: Int = d
+
+  override def toString: String = numer + "/" + denom
+
+  def add(that: Rational): Rational =
+    new Rational (numer * that.denom + that.numer * denom, denom * that.denom)
+}

src/test/scala/org/codecraftlabs/training/RationalSpec.scala

@@ -0,0 +1,15 @@
+package org.codecraftlabs.training
+
+import org.scalatest.flatspec.AnyFlatSpec
+import org.scalatest.matchers.should.Matchers
+
+class RationalSpec extends AnyFlatSpec with Matchers {
+  "1/2 + 2/3" should "7/6" in {
+    val r1 = new Rational(1, 2)
+    val r2 = new Rational(2, 3)
+
+    val result = r1.add(r2)
+    result.numer shouldEqual 7
+    result.denom shouldEqual 6
+  }
+}