package main

import "math"

func checkClearSlice() {
	s := []int{1, 2, 3}
	clear(s)
	for i := range s {
		if s[i] != 0 {
			panic("clear not zeroing slice elem")
		}
	}

	clear([]int{})
}

func checkClearMap() {
	m1 := make(map[int]int)
	m1[0] = 0
	m1[1] = 1
	clear(m1)
	if len(m1) != 0 {
		panic("m1 is not cleared")
	}

	// map contains NaN keys is also cleared.

	bad(func() { clear(Field(v, 4)) })                     // .NamedT2
	bad(func() { clear(Field(Field(v, 4), 0)) })           // .NamedT2.Z
	bad(func() { clear(Field(Field(v, 4), 1)) })           // .NamedT2.namedT0
	bad(func() { clear(Field(Field(Field(v, 4), 1), 0)) }) // .NamedT2.namedT0.W
	bad(func() { clear(Field(v, 5)) })                     // .namedT1
	bad(func() { clear(Field(Field(v, 5), 0)) })           // .namedT1.Y

public class MapClearTester<K, V> extends AbstractMapTester<K, V> {
  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testClear() {
    getMap().clear();
    assertTrue("After clear(), a map should be empty.", getMap().isEmpty());
    assertEquals(0, getMap().size());
    assertFalse(getMap().entrySet().iterator().hasNext());
  }

  public void testClear() {
    multimap().clear();
    assertCleared();
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testClearThroughEntries() {
    multimap().entries().clear();
    assertCleared();
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testClearThroughAsMap() {
    multimap().asMap().clear();
    assertCleared();
  }

  @MapFeature.Require(SUPPORTS_REMOVE)

	// Prepare Data for Clear
	account = Account{Number: "account-has-one-append"}
	if err := DB.Model(&user2).Association("Account").Append(&account); err != nil {
		t.Fatalf("Error happened when append Account, got %v", err)
	}

	AssertAssociationCount(t, user2, "Account", 1, "after prepare data")

	// Clear
	if err := DB.Model(&user2).Association("Account").Clear(); err != nil {

public class MapClearTester<K, V> extends AbstractMapTester<K, V> {
  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testClear() {
    getMap().clear();
    assertTrue("After clear(), a map should be empty.", getMap().isEmpty());
    assertEquals(0, getMap().size());
    assertFalse(getMap().entrySet().iterator().hasNext());
  }

  public void testClear() {
    multimap().clear();
    assertCleared();
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testClearThroughEntries() {
    multimap().entries().clear();
    assertCleared();
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testClearThroughAsMap() {
    multimap().asMap().clear();
    assertCleared();
  }

  @MapFeature.Require(SUPPORTS_REMOVE)

	m[math.NaN()] = N

	// Iterate through map.
	i := 0
	for range m {
		if i == 6 {
			// Partway through iteration, clear the map.
			clear(m)
		} else if i > 6 {
			// If we advance to the next iteration, that's a bug.
			panic("BAD")
		}
		i++
	}
	if len(m) != 0 {
		panic("clear did not empty the map")
	}
}

func g() {
	// Allocate map.
	m := map[float64]int{}

	// Prepare Data for Clear
	if err := DB.Model(&user2).Association("Pets").Append(&pet); err != nil {
		t.Fatalf("Error happened when append Pets, got %v", err)
	}

	AssertAssociationCount(t, user2, "Pets", 1, "after prepare data")

	// Clear
	if err := DB.Model(&user2).Association("Pets").Clear(); err != nil {
		t.Errorf("Error happened when clear Pets, got %v", err)
	}

  public void testClearClearsInverse() {
    BiMap<V, K> inv = getMap().inverse();
    getMap().clear();
    assertTrue(getMap().isEmpty());
    assertTrue(inv.isEmpty());
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testKeySetClearClearsInverse() {
    BiMap<V, K> inv = getMap().inverse();
    getMap().keySet().clear();
    assertTrue(getMap().isEmpty());
    assertTrue(inv.isEmpty());
  }