[!GOOS:plan9] env PATH=

# check for invalid toolchain in go.mod
go mod init m
go mod edit -go=1.14 -toolchain=go1.22
! go version
stderr 'go: invalid toolchain: go1.22 is a language version but not a toolchain version \(go1.22.x\)'

rm go.mod
go mod init m
go mod edit -go=1.14 -toolchain=go1.21
! go version
stderr 'go: invalid toolchain: go1.21 is a language version but not a toolchain version \(go1.21.x\)'

rm go.mod

     * @return the toolchain selected by <code>maven-toolchains-plugin</code>
     */
    Toolchain getToolchainFromBuildContext(String type, MavenSession context);

    /**
     * Select all toolchains available in user settings matching the type and requirements,
     * independently from <code>maven-toolchains-plugin</code>.
     *
     * @param session the Maven session, must not be {@code null}

    def "can discover tool chain in environment"() {
        given:
        toolChain.initialiseEnvironment()

        and:
        buildFile << """
apply plugin: 'cpp'
model {
    toolChains {
        tc(${toolChain.implementationClass}) {
            // For software model builds, windows defaults to 32-bit target, so if we discard the toolchain init script,

 * limitations under the License.
 */

package org.gradle.jvm.toolchain;

import com.google.common.base.MoreObjects;
import org.gradle.api.Describable;
import org.gradle.api.provider.Property;
import org.gradle.internal.HasInternalProtocol;

/**
 * Requirements for selecting a Java toolchain.
 * <p>
 * A toolchain is a JRE/JDK used by the tasks of a build.

        assertFalse(toolchain.matchesRequirements(Collections.singletonMap("name", "John Doe")));
        verify(logger).debug("Toolchain {} is missing required property: {}", toolchain, "name");
    }

    @Test
    void testNonMatchingRequirementProperty() {
        ToolchainModel model = new ToolchainModel();
        model.setType("TYPE");

               .assertHasCause("No matching toolchain could be found in the locally installed toolchains or the configured toolchain download repositories. " +
                   "Some toolchain resolvers had provisioning failures: custom (Unable to download toolchain matching the requirements " +

    protected void configureDefaultTools(DefaultGccPlatformToolChain toolChain) {
        toolChain.getLinker().setExecutable("clang++");
        toolChain.getcCompiler().setExecutable("clang");
        toolChain.getCppCompiler().setExecutable("clang++");
        toolChain.getObjcCompiler().setExecutable("clang");
        toolChain.getObjcppCompiler().setExecutable("clang++");
        toolChain.getAssembler().setExecutable("clang");
    }

    @Override

        this.compileOptions = compileOptions;
        this.toolchain = toolchain;
    }

    @Override
    public T create() {
        if (toolchain != null) {
            return chooseSpecForToolchain();
        }

        if (compileOptions.isFork()) {
            return chooseSpecFromCompileOptions(Jvm.current().getJavaHome());
        }

env TESTGO_VERSION_SWITCH=switch

go get toolchain@go1.22.1
stderr '^go: added toolchain go1.22.1$'
! stderr '(added|removed|upgraded|downgraded) go'
grep 'toolchain go1.22.1' go.mod

go get toolchain@none
stderr '^go: removed toolchain go1.22.1$'
! stderr '(added|removed|upgraded|downgraded) go'
! grep toolchain go.mod

go get toolchain@go1.22.1
stderr '^go: added toolchain go1.22.1$'

        then:
        failureDescriptionStartsWith("Execution failed for task ':run'.")
        failureHasCause("Toolchain from `executable` property does not match toolchain from `javaLauncher` property")
    }

    def "fails on toolchain and executable mismatch (without application plugin)"() {
        def jdkCurrent = Jvm.current()
        def jdkOther = AvailableJavaHomes.differentVersion