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Spock is a testing and specification framework for Java and Groovy applications.
What makes it stand out from the crowd is its beautiful and highly expressive specification language.
Thanks to its JUnit runner, Spock is compatible with most IDEs, build tools, and continuous integration servers.
Spock is inspired from JUnit, jMock, RSpec, Groovy, Scala, Vulcans, and other fascinating life forms.
/*
* Copyright 2012 the original author or authors.
*
* Licensed 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
*
* https://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 spock.util.environment;
import org.spockframework.util.VersionNumber;
/**
* Provides information on the current JVM, such as its Java version.
*/
public class Jvm {
private final String javaVersion;
private final String javaSpecVersion;
private final VersionNumber javaSpecVersionNumber;
private Jvm() {
javaVersion = System.getProperty("java.version");
javaSpecVersion = System.getProperty("java.specification.version");
javaSpecVersionNumber = VersionNumber.parse(javaSpecVersion);
}
/**
* The Java version, as returned by the {@code java.version} system property.
* Examples for valid values (for Oracle/OpenJDK) are {@code "1.6.0_22"} and {@code "1.7.0_07"}.
*
* @return the Java version, as returned by the {@code java.version} system property
*/
public String getJavaVersion() {
return javaVersion;
}
/**
* The Java specification version, as returned by the {@code java.specification.version} system property.
* Examples for valid values are {@code "1.6"} and {@code "1.7"}.
*
* @return the Java specification version, as returned by the {@code java.specification.version} system property
*/
public String getJavaSpecificationVersion() {
return javaSpecVersion;
}
/**
* Tells whether the Java version is 8.
*
* @return whether the Java version is 8
*/
public boolean isJava8() {
return "1.8".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 9.
*
* @return whether the Java version is 9
*/
public boolean isJava9() {
return "9".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 10.
*
* @since 1.2
* @return whether the Java version is 10
*/
public boolean isJava10() {
return "10".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 11.
*
* @since 1.2
* @return whether the Java version is 11
*/
public boolean isJava11() {
return "11".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 12.
*
* @since 2.0
* @return whether the Java version is 12
*/
public boolean isJava12() {
return "12".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 13.
*
* @since 2.0
* @return whether the Java version is 13
*/
public boolean isJava13() {
return "13".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 14.
*
* @since 2.0
* @return whether the Java version is 14
*/
public boolean isJava14() {
return "14".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 15.
*
* @since 2.0
* @return whether the Java version is 15
*/
public boolean isJava15() {
return "15".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 16.
*
* @since 2.0
* @return whether the Java version is 16
*/
public boolean isJava16() {
return "16".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 17.
*
* @since 2.0
* @return whether the Java version is 17
*/
public boolean isJava17() {
return "17".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 18.
*
* @since 2.0
* @return whether the Java version is 18
*/
public boolean isJava18() {
return "18".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 19.
*
* @since 2.0
* @return whether the Java version is 19
*/
public boolean isJava19() {
return "19".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 20.
*
* @since 2.0
* @return whether the Java version is 20
*/
public boolean isJava20() {
return "20".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 21.
*
* @since 2.0
* @return whether the Java version is 21
*/
public boolean isJava21() {
return "21".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 22.
*
* @since 2.0
* @return whether the Java version is 22
*/
public boolean isJava22() {
return "22".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is 23.
*
* @since 2.0
* @return whether the Java version is 23
*/
public boolean isJava23() {
return "23".equals(javaSpecVersion);
}
/**
* Tells whether the Java version is equal to the given major Java version.
*
* @since 2.0
* @param majorJavaVersion major java version (e.g. 8, 12, 17) to check the Java version is equal to
* @return whether the Java version is equal to the given major Java version
*/
public boolean isJavaVersion(int majorJavaVersion) {
if (majorJavaVersion == 8) {
return isJava8();
} else {
return javaSpecVersionNumber.getMajor() == majorJavaVersion;
}
}
/**
* Tells whether the Java version is compatible with Java 8.
*
* @return whether the Java version is compatible with Java 8
*/
public boolean isJava8Compatible() {
return javaSpecVersionNumber.getMajor() > 1 || javaSpecVersionNumber.getMinor() >= 8;
}
/**
* Tells whether the Java version is compatible with Java 9.
*
* @return whether the Java version is compatible with Java 9
*/
public boolean isJava9Compatible() {
return javaSpecVersionNumber.getMajor() >= 9;
}
/**
* Tells whether the Java version is compatible with Java 10.
*
* @since 1.2
* @return whether the Java version is compatible with Java 10
*/
public boolean isJava10Compatible() {
return javaSpecVersionNumber.getMajor() >= 10;
}
/**
* Tells whether the Java version is compatible with Java 11.
*
* @since 1.2
* @return whether the Java version is compatible with Java 11
*/
public boolean isJava11Compatible() {
return javaSpecVersionNumber.getMajor() >= 11;
}
/**
* Tells whether the Java version is compatible with Java 12.
*
* @since 2.0
* @return whether the Java version is compatible with Java 12
*/
public boolean isJava12Compatible() {
return javaSpecVersionNumber.getMajor() >= 12;
}
/**
* Tells whether the Java version is compatible with Java 13.
*
* @since 2.0
* @return whether the Java version is compatible with Java 13
*/
public boolean isJava13Compatible() {
return javaSpecVersionNumber.getMajor() >= 13;
}
/**
* Tells whether the Java version is compatible with Java 14.
*
* @since 2.0
* @return whether the Java version is compatible with Java 14
*/
public boolean isJava14Compatible() {
return javaSpecVersionNumber.getMajor() >= 14;
}
/**
* Tells whether the Java version is compatible with Java 15.
*
* @since 2.0
* @return whether the Java version is compatible with Java 15
*/
public boolean isJava15Compatible() {
return javaSpecVersionNumber.getMajor() >= 15;
}
/**
* Tells whether the Java version is compatible with Java 16.
*
* @since 2.0
* @return whether the Java version is compatible with Java 16
*/
public boolean isJava16Compatible() {
return javaSpecVersionNumber.getMajor() >= 16;
}
/**
* Tells whether the Java version is compatible with Java 17.
*
* @since 2.0
* @return whether the Java version is compatible with Java 17
*/
public boolean isJava17Compatible() {
return javaSpecVersionNumber.getMajor() >= 17;
}
/**
* Tells whether the Java version is compatible with Java 18.
*
* @since 2.0
* @return whether the Java version is compatible with Java 18
*/
public boolean isJava18Compatible() {
return javaSpecVersionNumber.getMajor() >= 18;
}
/**
* Tells whether the Java version is compatible with Java 19.
*
* @since 2.0
* @return whether the Java version is compatible with Java 19
*/
public boolean isJava19Compatible() {
return javaSpecVersionNumber.getMajor() >= 19;
}
/**
* Tells whether the Java version is compatible with Java 20.
*
* @since 2.0
* @return whether the Java version is compatible with Java 20
*/
public boolean isJava20Compatible() {
return javaSpecVersionNumber.getMajor() >= 20;
}
/**
* Tells whether the Java version is compatible with Java 21.
*
* @since 2.0
* @return whether the Java version is compatible with Java 21
*/
public boolean isJava21Compatible() {
return javaSpecVersionNumber.getMajor() >= 21;
}
/**
* Tells whether the Java version is compatible with Java 22.
*
* @since 2.0
* @return whether the Java version is compatible with Java 22
*/
public boolean isJava22Compatible() {
return javaSpecVersionNumber.getMajor() >= 22;
}
/**
* Tells whether the Java version is compatible with Java 23.
*
* @since 2.0
* @return whether the Java version is compatible with Java 23
*/
public boolean isJava23Compatible() {
return javaSpecVersionNumber.getMajor() >= 23;
}
/**
* Tells whether the Java version is compatible with the given major Java version.
*
* @since 2.0
* @param majorJavaVersion major java version (e.g. 8, 12, 17) to check the Java version compatibility with
* @return whether the Java version is compatible with the given major Java version
*/
public boolean isJavaVersionCompatible(int majorJavaVersion) {
if (majorJavaVersion == 8) {
return isJava8Compatible();
} else {
return javaSpecVersionNumber.getMajor() >= majorJavaVersion;
}
}
/**
* Returns the current JVM.
*
* @return the current JVM
*/
public static Jvm getCurrent() {
return new Jvm();
}
}