1 files changed, 254 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/lang3/SystemPropertiesTest.java b/src/test/java/org/apache/commons/lang3/SystemPropertiesTest.java
new file mode 100644
index 000000000..46b282995
--- /dev/null
+++ b/src/test/java/org/apache/commons/lang3/SystemPropertiesTest.java
@@ -0,0 +1,254 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.lang3;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import org.junit.jupiter.api.Test;
+
+public class SystemPropertiesTest {
+
+    private boolean isJava11OrGreater() {
+        return SystemUtils.isJavaVersionAtLeast(JavaVersion.JAVA_11);
+    }
+
+    @Test
+    public void testGetAwtToolkit() {
+        assertDoesNotThrow(SystemProperties::getAwtToolkit);
+    }
+
+    @Test
+    public void testGetFileEncoding() {
+        assertNotNull(SystemProperties.getFileEncoding());
+    }
+
+    @Test
+    public void testGetFileSeparator() {
+        assertNotNull(SystemProperties.getFileSeparator());
+    }
+
+    @Test
+    public void testGetJavaAwtFonts() {
+        assertNull(SystemProperties.getJavaAwtFonts());
+    }
+
+    @Test
+    public void testGetJavaAwtGraphicsenv() {
+        assertDoesNotThrow(SystemProperties::getJavaAwtGraphicsenv);
+    }
+
+    @Test
+    public void testGetJavaAwtHeadless() {
+        assertNull(SystemProperties.getJavaAwtHeadless());
+    }
+
+    @Test
+    public void testGetJavaAwtPrinterjob() {
+        assertDoesNotThrow(SystemProperties::getJavaAwtPrinterjob);
+    }
+
+    @Test
+    public void testGetJavaClassPath() {
+        assertNotNull(SystemProperties.getJavaClassPath());
+    }
+
+    @Test
+    public void testGetJavaClassVersion() {
+        assertNotNull(SystemProperties.getJavaClassVersion());
+    }
+
+    @Test
+    public void testGetJavaCompiler() {
+        if (SystemUtils.IS_JAVA_14) {
+            // Not in Java 11
+            assertNotNull(SystemProperties.getJavaCompiler());
+        }
+    }
+
+    @Test
+    public void testGetJavaEndorsedDirs() {
+        if (isJava11OrGreater()) {
+            // Not in Java 11
+            assertNull(SystemProperties.getJavaEndorsedDirs());
+        } else {
+            assertNotNull(SystemProperties.getJavaExtDirs());
+        }
+    }
+
+    @Test
+    public void testGetJavaExtDirs() {
+        if (isJava11OrGreater()) {
+            // Not in Java 11
+            assertNull(SystemProperties.getJavaExtDirs());
+        } else {
+            assertNotNull(SystemProperties.getJavaExtDirs());
+        }
+    }
+
+    @Test
+    public void testGetJavaHome() {
+        assertNotNull(SystemProperties.getJavaHome());
+    }
+
+    @Test
+    public void testGetJavaIoTmpdir() {
+        assertNotNull(SystemProperties.getJavaIoTmpdir());
+    }
+
+    @Test
+    public void testGetJavaLibraryPath() {
+        assertNotNull(SystemProperties.getJavaLibraryPath());
+    }
+
+    @Test
+    public void testGetJavaRuntimeName() {
+        assertNotNull(SystemProperties.getJavaRuntimeName());
+    }
+
+    @Test
+    public void testGetJavaRuntimeVersion() {
+        assertNotNull(SystemProperties.getJavaRuntimeVersion());
+    }
+
+    @Test
+    public void testGetJavaSpecificationName() {
+        assertNotNull(SystemProperties.getJavaSpecificationName());
+    }
+
+    @Test
+    public void testGetJavaSpecificationVendor() {
+        assertNotNull(SystemProperties.getJavaSpecificationVendor());
+    }
+
+    @Test
+    public void testGetJavaSpecificationVersion() {
+        assertNotNull(SystemProperties.getJavaSpecificationVersion());
+    }
+
+    @Test
+    public void testGetJavaUtilPrefsPreferencesFactory() {
+        assertNull(SystemProperties.getJavaUtilPrefsPreferencesFactory());
+    }
+
+    @Test
+    public void testGetJavaVendor() {
+        assertNotNull(SystemProperties.getJavaVendor());
+    }
+
+    @Test
+    public void testGetJavaVendorUrl() {
+        assertNotNull(SystemProperties.getJavaVendorUrl());
+    }
+
+    @Test
+    public void testGetJavaVersion() {
+        assertNotNull(SystemProperties.getJavaVersion());
+    }
+
+    @Test
+    public void testGetJavaVmInfo() {
+        assertNotNull(SystemProperties.getJavaVmInfo());
+    }
+
+    @Test
+    public void testGetJavaVmName() {
+        assertNotNull(SystemProperties.getJavaVmName());
+    }
+
+    @Test
+    public void testGetJavaVmSpecificationName() {
+        assertNotNull(SystemProperties.getJavaVmSpecificationName());
+    }
+
+    @Test
+    public void testGetJavaVmSpecificationVendor() {
+        assertNotNull(SystemProperties.getJavaVmSpecificationVendor());
+    }
+
+    @Test
+    public void testGetJavaVmSpecificationVersion() {
+        assertNotNull(SystemProperties.getJavaVmSpecificationVersion());
+    }
+
+    @Test
+    public void testGetJavaVmVendor() {
+        assertNotNull(SystemProperties.getJavaVmVendor());
+    }
+
+    @Test
+    public void testGetJavaVmVersion() {
+        assertNotNull(SystemProperties.getJavaVmVersion());
+    }
+
+    @Test
+    public void testGetLineSeparator() {
+        assertNotNull(SystemProperties.getLineSeparator());
+    }
+
+    @Test
+    public void testGetOsArch() {
+        assertNotNull(SystemProperties.getOsArch());
+    }
+
+    @Test
+    public void testGetOsName() {
+        assertNotNull(SystemProperties.getOsName());
+    }
+
+    @Test
+    public void testGetOsVersion() {
+        assertNotNull(SystemProperties.getOsVersion());
+    }
+
+    @Test
+    public void testGetPathSeparator() {
+        assertNotNull(SystemProperties.getPathSeparator());
+    }
+
+    @Test
+    public void testGetUserCountry() {
+        assertDoesNotThrow(SystemProperties::getUserCountry);
+    }
+
+    @Test
+    public void testGetUserDir() {
+        assertNotNull(SystemProperties.getUserDir());
+    }
+
+    @Test
+    public void testGetUserHome() {
+        assertNotNull(SystemProperties.getUserHome());
+    }
+
+    @Test
+    public void testGetUserLanguage() {
+        assertNotNull(SystemProperties.getUserLanguage());
+    }
+
+    @Test
+    public void testGetUserName() {
+        assertNotNull(SystemProperties.getUserName());
+    }
+
+    @Test
+    public void testGetUserTimezone() {
+        assertDoesNotThrow(SystemProperties::getUserTimezone);
+    }
+
+}