then:
        System.getenv("TEST_ENV_1") == "value"
        System.getenv("TEST_ENV_2") == "value"

        when:
        env.removeEnvironmentVariable("TEST_ENV_1")
        env.maybeRemoveEnvironmentVariable("TEST_ENV_2")

        then:
        System.getenv("TEST_ENV_1") == null
        System.getenv("TEST_ENV_2") == null
    }

    @Requires(UnitTestPreconditions.WorkingDir)

def jdkVariables = ["JDK_8", "JDK_11", "JDK_17"]
def jdkLocations = jdkVariables.findAll { v ->
    System.getenv(v) != null
}.collectEntries { v ->
    [v, System.getenv(v)]

plugins {
    id('java-library')
}

// tag::conditionalAction[]
if (System.getenv().containsKey("CI")) {
    tasks.withType(Test).configureEach {
        doFirst {
            println "Running test on CI"
        }
    }
}
// end::conditionalAction[]

// tag::unconditionalAction[]
tasks.withType(Test).configureEach {
    doFirst {
        if (System.getenv().containsKey("CI")) {
            println "Running test on CI"
        }

func newExporter() (trace.SpanExporter, error) {
	set := os.Getenv("OTEL_TRACES_EXPORTER") == "otlp" || os.Getenv("OTEL_EXPORTER_OTLP_ENDPOINT") != "" || os.Getenv("OTEL_EXPORTER_OTLP_TRACES_ENDPOINT") != ""
	if !set {
		return nil, nil
	}

	proto := os.Getenv("OTEL_EXPORTER_OTLP_TRACES_PROTOCOL")
	if proto == "" {
		proto = os.Getenv("OTEL_EXPORTER_OTLP_PROTOCOL")
	}
	if proto == "" {
		proto = "grpc"
	}

	err := syscall.Setenv(key, value)
	if err != nil {
		t.Fatalf("Setenv failed to set %q: %v", value, err)
	}
	newvalue, found := syscall.Getenv(key)
	if !found {
		t.Fatalf("Getenv failed to find %v variable (want value %q)", key, value)
	}
	if newvalue != value {
		t.Fatalf("Getenv(%v) = %q; want %q", key, newvalue, value)
	}
}

func TestEnv(t *testing.T) {
	testSetGetenv(t, "TESTENV", "AVALUE")

// license that can be found in the LICENSE file.

// Plan 9 environment variables.

package plan9

import (
	"syscall"
)

func Getenv(key string) (value string, found bool) {
	return syscall.Getenv(key)
}

func Setenv(key, value string) error {
	return syscall.Setenv(key, value)
}

func Clearenv() {
	syscall.Clearenv()
}

func Environ() []string {

    id("java-library")
}

// tag::conditionalAction[]
if ("CI" in System.getenv()) {
    tasks.withType<Test>().configureEach {
        doFirst {
            println("Running test on CI")
        }
    }
}
// end::conditionalAction[]

// tag::unconditionalAction[]
tasks.withType<Test>().configureEach {
    doFirst {
        if ("CI" in System.getenv()) {
            println("Running test on CI")
        }
    }
}

        String getEnv(String name);
    }

    public static class CurrentSystemPropertyAccess implements SystemPropertyAccess {
        @Override
        public String getProperty(String name) {
            return System.getProperty(name);
        }

        @Override
        public String getEnv(String name) {
            return System.getenv(name);
        }
    }

package main

import (
	"fmt"
	"log"
	"os"
)

func main() {
	if os.Geteuid() == os.Getuid() {
		os.Exit(99)
	}

	fmt.Fprintf(os.Stdout, "GOTRACEBACK=%s\n", os.Getenv("GOTRACEBACK"))
	f, err := os.OpenFile(os.Getenv("TEST_OUTPUT"), os.O_CREATE|os.O_RDWR, 0600)
	if err != nil {
		log.Fatalf("os.Open failed: %s", err)
	}
	defer f.Close()
	fmt.Fprintf(os.Stderr, "hello\n")

val jdkVariables = listOf("JDK_8", "JDK_11", "JDK_17")
val jdkLocations = jdkVariables.filter { v ->
    System.getenv(v) != null
}.associate { v ->
    v to System.getenv(v)