From 7367f3b0ba099d02f98b78599ca6c860047595b8 Mon Sep 17 00:00:00 2001
From: Usman Mohyuddin <mr.usman76@gmail.com>
Date: Thu, 23 Apr 2020 22:54:55 +0500
Subject: [PATCH] add code files for "How to determine the data type in Groovy"
 (#9123)

* add code files for "How to groovy data types"

add code files for "How to groovy data types"

* added Tests in example

* Update pom.xml

change tab into spaces
---
 core-groovy-2/determine-datatype/pom.xml      | 40 ++++++++++++++
 .../groovy/determine/datatype/Person.groovy   | 14 +++++
 .../determine/datatype/PersonTest.groovy      | 55 +++++++++++++++++++
 3 files changed, 109 insertions(+)
 create mode 100644 core-groovy-2/determine-datatype/pom.xml
 create mode 100644 core-groovy-2/determine-datatype/src/com/baeldung/groovy/determine/datatype/Person.groovy
 create mode 100644 core-groovy-2/determine-datatype/src/com/baeldung/groovy/determine/datatype/PersonTest.groovy

diff --git a/core-groovy-2/determine-datatype/pom.xml b/core-groovy-2/determine-datatype/pom.xml
new file mode 100644
index 0000000000..0bcef4e5d8
--- /dev/null
+++ b/core-groovy-2/determine-datatype/pom.xml
@@ -0,0 +1,40 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung.groovy</groupId>
+    <artifactId>determine-datatype</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <build>
+        <sourceDirectory>src</sourceDirectory>
+        <plugins>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.gmaven</groupId>
+                <artifactId>groovy-maven-plugin</artifactId>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.codehaus.groovy</groupId>
+                        <artifactId>groovy-all</artifactId>
+                        <version>2.0.6</version>
+                    </dependency>
+                </dependencies>
+            </plugin>
+        </plugins>
+    </build>
+    <dependencies>
+        <!-- https://mvnrepository.com/artifact/org.junit/junit5-engine -->
+        <dependency>
+            <groupId>org.junit</groupId>
+            <artifactId>junit5-engine</artifactId>
+            <version>5.0.0-ALPHA</version>
+        </dependency>
+    </dependencies>
+</project>
\ No newline at end of file
diff --git a/core-groovy-2/determine-datatype/src/com/baeldung/groovy/determine/datatype/Person.groovy b/core-groovy-2/determine-datatype/src/com/baeldung/groovy/determine/datatype/Person.groovy
new file mode 100644
index 0000000000..1a89dce435
--- /dev/null
+++ b/core-groovy-2/determine-datatype/src/com/baeldung/groovy/determine/datatype/Person.groovy
@@ -0,0 +1,14 @@
+package com.baeldung.groovy.determine.datatype
+
+class Person {
+    
+    private int ageAsInt
+    private Double ageAsDouble
+    private String ageAsString
+    
+    Person() {}
+    Person(int ageAsInt) { this.ageAsInt =  ageAsInt}
+    Person(Double ageAsDouble) { this.ageAsDouble =  ageAsDouble}
+    Person(String ageAsString) { this.ageAsString =  ageAsString}    
+}
+class Student extends Person {}
diff --git a/core-groovy-2/determine-datatype/src/com/baeldung/groovy/determine/datatype/PersonTest.groovy b/core-groovy-2/determine-datatype/src/com/baeldung/groovy/determine/datatype/PersonTest.groovy
new file mode 100644
index 0000000000..56095a3f1b
--- /dev/null
+++ b/core-groovy-2/determine-datatype/src/com/baeldung/groovy/determine/datatype/PersonTest.groovy
@@ -0,0 +1,55 @@
+package com.baeldung.groovy.determine.datatype;
+
+import org.junit.Assert
+import org.junit.Test;
+
+public class PersonTest {
+    
+    @Test
+    public void givenWhenParameterTypeIsInteger_thenReturnTrue() {
+        Person personObj = new Person(10)
+        Assert.assertTrue(personObj.ageAsInt instanceof Integer);
+    }
+    
+    @Test
+    public void givenWhenParameterTypeIsDouble_thenReturnTrue() {
+        Person personObj = new Person(10.0)
+        Assert.assertTrue((personObj.ageAsDouble).getClass() == Double)
+    }
+    
+    @Test
+    public void givenWhenParameterTypeIsString_thenReturnTrue() {
+        Person personObj = new Person("10 years")
+        Assert.assertTrue(personObj.ageAsString.class == String)
+    }
+    
+    @Test
+    public void givenClassName_WhenParameterIsInteger_thenReturnTrue() {
+        Assert.assertTrue(Person.class.getDeclaredField('ageAsInt').type == int.class)
+    }
+    
+    @Test
+    public void givenWhenObjectIsInstanceOfType_thenReturnTrue() {
+        Person personObj = new Person()
+        Assert.assertTrue(personObj instanceof Person)
+    }
+
+    @Test
+    public void givenWhenInstanceIsOfSubtype_thenReturnTrue() {
+        Student studentObj = new Student()
+        Assert.assertTrue(studentObj in Person)
+    }
+    
+    @Test
+    public void givenGroovyList_WhenFindClassName_thenReturnTrue() {
+      def ageList = ['ageAsString','ageAsDouble', 10]   
+      Assert.assertTrue(ageList.class == ArrayList)     
+      Assert.assertTrue(ageList.getClass() == ArrayList)
+    }
+    
+    @Test
+    public void givenGrooyMap_WhenFindClassName_thenReturnTrue() {
+      def ageMap = [ageAsString: '10 years', ageAsDouble: 10.0]
+      Assert.assertFalse(ageMap.class == LinkedHashMap)
+    }
+}
\ No newline at end of file