assertThat(stringIdentityConverter.toString()).isEqualTo("Converter.identity()");

    assertThat(Converter.identity()).isSameInstanceAs(Converter.identity());
  }

  public void testFrom() {
    Function<String, Integer> forward = Integer::parseInt;
    Function<Object, String> backward = toStringFunction();

    Converter<String, Number> converter = Converter.<String, Number>from(forward, backward);

package clause_test

import (
	"fmt"
	"testing"

	"gorm.io/gorm/clause"
)

func TestFrom(t *testing.T) {
	results := []struct {
		Clauses []clause.Interface
		Result  string
		Vars    []interface{}
	}{
		{
			[]clause.Interface{clause.Select{}, clause.From{}},
			"SELECT * FROM `users`", nil,
		},
		{
			[]clause.Interface{
				clause.Select{}, clause.From{
					Tables: []clause.Table{{Name: "users"}},

  }

  public void testContainsRow() {
    assertFalse(INSTANCE.containsRow('a'));
  }

  public void testContainsValue() {
    assertFalse(INSTANCE.containsValue("blah"));
  }

  public void testRow() {
    assertEquals(ImmutableMap.of(), INSTANCE.row('a'));
  }

  public void testRowKeySet() {
    assertEquals(ImmutableSet.of(), INSTANCE.rowKeySet());
  }

  public void testRowMap() {

    assertEquals(ImmutableSet.of(1), testTable.columnKeySet());
  }

  public void testColumnMap() {
    assertEquals(ImmutableMap.of(1, ImmutableMap.of('a', "blah")), testTable.columnMap());
  }

  public void testRow() {
    assertEquals(ImmutableMap.of(), testTable.row('A'));
    assertEquals(ImmutableMap.of(1, "blah"), testTable.row('a'));
  }

  public void testRowKeySet() {

      assertTrue(testInstance.containsRow('a'));
      assertTrue(testInstance.containsRow('b'));
      assertFalse(testInstance.containsRow('c'));
    }
  }

  public void testRow() {
    for (ImmutableTable<Character, Integer, String> testInstance : getTestInstances()) {
      assertEquals(ImmutableMap.of(1, "foo", 2, "baz"), testInstance.row('a'));

        assertNotNull(
                updateCheckManager.readLastUpdated(touchFile, updateCheckManager.getRepositoryKey(remoteRepository)));
    }

    @Test
    void testPom() throws Exception {
        ArtifactRepository remoteRepository = remoteRepository();

        ArtifactRepository localRepository = localRepository();

        Artifact a = createArtifact("a", "0.0.1", "pom");

    assertEquals(expected, table.hashCode());
  }

  public void testToStringSize1() {
    table = create("foo", 1, 'a');
    assertThat(table.toString()).isEqualTo("{foo={1=a}}");
  }

  public void testRow() {
    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    assertEquals(ImmutableMap.of(1, 'a', 3, 'c'), table.row("foo"));
  }

  // This test assumes that the implementation does not support null keys.