#define EXPORT_FUNC
#endif

class EXPORT_FUNC Deck {
    Card card;
public:
    void shuffle();
    Card& draw();
};
"""))
        final SourceFileElement source = ofFile(new SourceFile("cpp", "deck.cpp", """
#include "deck.h"
#include "shuffle.h"

void Deck::shuffle() {
    ShuffleAlgorithm shuffler;
    shuffler.shuffle();
}

Card& Deck::draw() {
    return card;
}
"""))
    }

go test -c
exec ./m.test -test.shuffle=off
! stdout '^-test.shuffle '

exec ./m.test -test.shuffle=on
stdout '^-test.shuffle '

exec ./m.test -test.v -test.bench=. -test.shuffle=0 foo_test.go
stdout '^-test.shuffle 0'
stdout '(?s)TestTwo(.*)TestOne(.*)TestThree(.*)BenchmarkThree(.*)BenchmarkOne(.*)BenchmarkTwo'

exec ./m.test -test.v -test.bench=. -test.shuffle=123 foo_test.go
stdout '^-test.shuffle 123'

                dependencies {
                    api project(':card')
                    implementation project(':shuffle')
                }
            }
        """
        app.deck.writeToProject(file('deck'))
        app.card.writeToProject(file('card'))
        app.shuffle.writeToProject(file('shuffle'))

        when:
        run('publish')

        then:

                dependencies {
                    api project(':card')
                    implementation project(':shuffle')
                }
            }
            project(':card') {
                apply plugin: 'cpp-library'
            }
            project(':shuffle') {
                apply plugin: 'cpp-library'
            }
        """
        app.deck.writeToProject(file("deck"))

                    implementation project(':shuffle')
                }
            }
            project(':shuffle') {
                library.baseName = 'card_shuffle'
            }
"""
        app.deck.writeToProject(file('deck'))
        app.card.writeToProject(file('card'))
        app.shuffle.writeToProject(file('shuffle'))

        when:
        run('publish')

        then:

      assertThat(graph.edges()).isEmpty(); // no edges can remain if there's no nodes
      AbstractGraphTest.validateGraph(graph);

      Collections.shuffle(nodeList, gen);
      for (Integer node : nodeList) {
        assertThat(graph.addNode(node)).isTrue();
      }
      Collections.shuffle(edgeList, gen);
      for (EndpointPair<Integer> edge : edgeList) {
        assertThat(graph.putEdge(edge.nodeU(), edge.nodeV())).isTrue();
      }

SmallVector<int64_t, 4> GetDataFormatPermutation(StringRef from, StringRef to);

// Shuffle elements in the `attr` according to the permutation. Optional
// `inner_size` allows to shuffle array attributes created from rank 2 tensors
// on outer dimension only.
ArrayAttr ShuffleArrayAttr(ArrayAttr attr, ArrayRef<int64_t> permutation,
                           int inner_size = 1);

// Shuffle ranked tensor dimensions according to the permutation.

        app.shuffle.writeToProject(file("shuffle"))
        app.main.writeToProject(file("app"))

        expect:
        succeeds ":app:assemble"

        result.assertTasksExecuted([':card', ':deck', ':shuffle'].collect { tasks(it).debug.allToLink }, tasks(':app').debug.allToInstall, ":app:assemble")
        sharedLibrary("deck/build/lib/main/debug/deck").assertExists()

	for i := range p {
		p[i] = i
	}
	r.Shuffle(len(p), func(i, j int) { p[i], p[j] = p[j], p[i] })
	return p
}

// Shuffle pseudo-randomizes the order of elements.
// n is the number of elements. Shuffle panics if n < 0.
// swap swaps the elements with indexes i and j.
func (r *Rand) Shuffle(n int, swap func(i, j int)) {
	if n < 0 {
		panic("invalid argument to Shuffle")
	}

    return {0, 3, 1, 2};
  } else if (from == "NCHW" && to == "NHWC") {
    return {0, 2, 3, 1};
  } else {
    return {};
  }
}

// Shuffle elements in the `attr` according to the permutation. Optional
// `inner_size` allows to shuffle array attributes created from rank 2 tensors
// on outer dimension only.
ArrayAttr ShuffleArrayAttr(ArrayAttr attr, ArrayRef<int64_t> permutation,