Merge pull request #799 from sk1418/os-name

[os-name] determine OS

Author: theangrydev

core-kotlin-modules/core-kotlin-10/README.md

@@ -0,0 +1 @@
+## Relevant Articles

core-kotlin-modules/core-kotlin-10/pom.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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
+         http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>core-kotlin-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-kotlin-10</artifactId>
+
+</project>

core-kotlin-modules/core-kotlin-10/src/test/kotlin/com/baeldung/obtainTheOsName/ObtainTheOsNameUnitTest.kt

@@ -0,0 +1,60 @@
+package com.baeldung.obtainTheOsName
+
+import org.apache.commons.lang3.SystemUtils
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import org.slf4j.LoggerFactory
+
+class ObtainTheOsNameUnitTest {
+    private val log = LoggerFactory.getLogger(ObtainTheOsNameUnitTest::class.java)
+
+    @Test
+    fun `when read system env properties then get the OS name and version`() {
+        val osName = System.getProperty("os.name")
+        val osVersion = System.getProperty("os.version")
+        assertTrue { osName.isNotBlank() }
+        assertTrue { osVersion.isNotBlank() }
+
+        log.info(
+            """|
+            |OS Information
+            |-----------------
+            |OS_Name: $osName
+            |Version: $osVersion
+            |""".trimMargin()
+        )
+    }
+
+    @Test
+    fun `when using when block then the OS gets determined`() {
+        val osName = System.getProperty("os.name").lowercase()
+        assertTrue { osName.isNotBlank() }
+
+        val result = when {
+            "windows" in osName -> "Windows"
+            listOf("mac", "nix", "sunos", "solaris", "bsd").any { it in osName } -> "*nix"
+            else -> "Other"
+        }
+
+        log.info(">>> $osName -> $result")
+    }
+
+    @Test
+    fun `when using SystemUtils from commons-lang then get the OS name and version`() {
+        val osName = SystemUtils.OS_NAME
+        val osVersion = SystemUtils.OS_VERSION
+        assertTrue { osName.isNotBlank() }
+        assertTrue { osVersion.isNotBlank() }
+
+        log.info(
+            """|
+            |OS_Name   : $osName
+            |Version   : $osVersion
+            |Is Windows: ${SystemUtils.IS_OS_WINDOWS}
+            |Is *nix   : ${SystemUtils.IS_OS_UNIX}
+            |Is Mac OS : ${SystemUtils.IS_OS_MAC}
+            |""".trimMargin()
+        )
+    }
+
+}

core-kotlin-modules/pom.xml

@@ -24,6 +24,7 @@
         <module>core-kotlin-7</module>
         <module>core-kotlin-8</module>
         <module>core-kotlin-9</module>
+        <module>core-kotlin-10</module>
         <module>core-kotlin-advanced</module>
         <module>core-kotlin-advanced-2</module>
         <module>core-kotlin-annotations</module>