}

        when:
        0 * componentSelectionRules.apply(_, _)

        then:
        chooser.selectNewestComponent(one, two) == two

        when:
        0 * componentSelectionRules.apply(_, _)

        then:
        chooser.selectNewestComponent(two, three) == three
    }

    def "chooses non-generated descriptor over generated"() {
        def one = Mock(ModuleComponentGraphResolveMetadata) {

        '8.0'                      | 'accepts'

        '6.8.3'                    | 'rejects'
        '6.8-rc-2'                 | 'rejects'
        '5.0'                      | 'rejects'
    }

    def "chooses exact match API if available"() {
        when:
        def consumer = versionAttribute('7.0')
        def producer = [
            versionAttribute('6.0'),
            versionAttribute('7.0'),

        serverPools := z.getServerPoolsAvailableSpace(ctx)
        total := serverPools.TotalAvailable()
        // choose when we reach this many
        choose := rand.Uint64() % total
        atTotal := uint64(0)
        for _, pool := range serverPools {
                atTotal += pool.Available
                if atTotal > choose && pool.Available > 0 {
                        return pool.Index
                }
        }

class LatestModuleConflictResolverTest extends AbstractConflictResolverTest {

    def setup() {
        resolver = new LatestModuleConflictResolver(new DefaultVersionComparator(), new VersionParser())
    }

    def "chooses latest module version #version for candidates #candidates"() {
        given:
        candidateVersions candidates

        when:
        resolveConflicts()

        then:
        selected version

 *
 * @author Kevin Bourrillion
 * @since 3.0
 */
@DoNotMock("Use Interners.new*Interner")
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public interface Interner<E> {
  /**
   * Chooses and returns the representative instance for any of a collection of instances that are
   * equal to each other. If two {@linkplain Object#equals equal} inputs are given to this method,

        8        | 9        | false
        8        | 10       | false
        8        | 11       | false
    }

    @Unroll("disamgiguates when consumer=#consumer and candidates=#candidates chooses=#expected")
    def "check disambiguation rules"() {
        MultipleCandidatesResult details = Mock()

        when:
        disambiguationRules.execute(details)

        then:

# Both example.net/ambiguous v0.1.0 and example.net/ambiguous/pkg v0.1.0 exist.
# 'go mod tidy' would arbitrarily choose the one with the longer path,
# but 'go mod tidy' also arbitrarily chooses the latest version.

cp go.mod go.mod.orig


# From a clean slate, 'go get' currently does the same thing as 'go mod tidy':
# it resolves the package from the module with the longest matching prefix.

go get example.net/ambiguous/nested/pkg@v0.1.0
go list -m all

    } while (result.signum() == 0);
    return result;
  }

  /**
   * Generates a number in [0, 2^numBits) with an exponential distribution. The floor of the log2 of
   * the result is chosen uniformly at random in [0, numBits), and then the result is chosen in that
   * range uniformly at random. Zero is treated as having log2 == 0.
   */
  static BigInteger randomNonNegativeBigInteger(int numBits) {
    int digits = RANDOM_SOURCE.nextInt(numBits);

import org.hamcrest.CoreMatchers.equalTo
import org.hamcrest.MatcherAssert.assertThat
import org.junit.Test


class DefaultProjectSchemaProviderTest {

    @Test
    fun `chooses first public interface in type hierarchy`() {

        val androidExtensionsSchema = DefaultExtensionsSchema.create(
            listOf(
                extensionSchema(
                    "kotlinOptions",

Often a dependency graph would accidentally contain multiple implementations of the same API.
This is particularly common with logging frameworks, where multiple bindings are available, and that one library chooses a binding when another transitive dependency chooses another.
Because those implementations live at different GAV coordinates, the build tool has usually no way to find out that there's a conflict between those libraries.