From 949881921e6513972cc7143517c94b85b81f5644 Mon Sep 17 00:00:00 2001
From: patkorek <patkorek@gmail.com>
Date: Fri, 10 Apr 2020 13:27:27 +0200
Subject: [PATCH] Added test case with isInteger() method.

---
 .../com/baeldung/strings/ConvertStringToInt.groovy    | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/core-groovy/src/test/groovy/com/baeldung/strings/ConvertStringToInt.groovy b/core-groovy/src/test/groovy/com/baeldung/strings/ConvertStringToInt.groovy
index 3b73c31596..7a4be4a957 100644
--- a/core-groovy/src/test/groovy/com/baeldung/strings/ConvertStringToInt.groovy
+++ b/core-groovy/src/test/groovy/com/baeldung/strings/ConvertStringToInt.groovy
@@ -96,4 +96,15 @@ class ConvertStringToInt {
         def invalidString = null
         invalidString.toInteger()
     }
+
+    @Test
+    void givenString_whenUsingIsInteger_thenCheckIfCorrectValue() {
+        def invalidString = "123a"
+        def validString = "123"
+        def invalidNum = invalidString?.isInteger() ? invalidString as Integer : false
+        def correctNum = validString?.isInteger() ? validString as Integer : false
+
+        assertEquals(false, invalidNum)
+        assertEquals(123, correctNum)
+    }
 }