fail();
    } catch (NoSuchElementException expected) {
    }
    try {
      iterable.iterator();
      fail();
    } catch (IllegalStateException expected) {
    }
  }

  public void testFrom_empty() {
    Iterable<String> iterable = MinimalIterable.from(Collections.<String>emptySet());
    Iterator<String> iterator = iterable.iterator();
    assertFalse(iterator.hasNext());
    try {
      iterator.next();

      fail();
    } catch (NoSuchElementException expected) {
    }
    try {
      iterable.iterator();
      fail();
    } catch (IllegalStateException expected) {
    }
  }

  public void testFrom_empty() {
    Iterable<String> iterable = MinimalIterable.from(Collections.<String>emptySet());
    Iterator<String> iterator = iterable.iterator();
    assertFalse(iterator.hasNext());
    try {
      iterator.next();

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"}},

    assertEquals("Converter.identity()", stringIdentityConverter.toString());

    assertSame(Converter.identity(), Converter.identity());
  }

  public void testFrom() {
    Function<String, Integer> forward =
        new Function<String, Integer>() {
          @Override
          public Integer apply(String input) {
            return Integer.parseInt(input);
          }

    assertEquals("Converter.identity()", stringIdentityConverter.toString());

    assertSame(Converter.identity(), Converter.identity());
  }

  public void testFrom() {
    Function<String, Integer> forward =
        new Function<String, Integer>() {
          @Override
          public Integer apply(String input) {
            return Integer.parseInt(input);
          }

    waitUntilClosed(closingFuture);
    assertStillOpen(closeable1);
  }

  public void testFrom_failedInput() throws Exception {
    assertFinallyFailsWithException(failedClosingFuture());
  }

  public void testFrom_cancelledInput() throws Exception {
    assertBecomesCanceled(ClosingFuture.from(immediateCancelledFuture()));
  }

    } catch (UnsupportedOperationException expected) {
    }
  }

  public void testFrom() {
    assertEquals(
        ImmutableList.of(1, 2, 3, 4),
        Lists.newArrayList(FluentIterable.from(ImmutableList.of(1, 2, 3, 4))));
  }

  @SuppressWarnings("deprecation") // test of deprecated method
  public void testFrom_alreadyFluentIterable() {
    FluentIterable<Integer> iterable = FluentIterable.from(asList(1));

    waitUntilClosed(closingFuture);
    assertStillOpen(closeable1);
  }

  public void testFrom_failedInput() throws Exception {
    assertFinallyFailsWithException(failedClosingFuture());
  }

  public void testFrom_cancelledInput() throws Exception {
    assertBecomesCanceled(ClosingFuture.from(immediateCancelledFuture()));
  }

    } catch (UnsupportedOperationException expected) {
    }
  }

  public void testFrom() {
    assertEquals(
        ImmutableList.of(1, 2, 3, 4),
        Lists.newArrayList(FluentIterable.from(ImmutableList.of(1, 2, 3, 4))));
  }

  @SuppressWarnings("deprecation") // test of deprecated method
  public void testFrom_alreadyFluentIterable() {
    FluentIterable<Integer> iterable = FluentIterable.from(asList(1));

      fail();
    } catch (NullPointerException expected) {
    }
    assertSame(comparator, reserialize(comparator));
    assertEquals("Ordering.natural()", comparator.toString());
  }

  public void testFrom() {
    Ordering<String> caseInsensitiveOrdering = Ordering.from(String.CASE_INSENSITIVE_ORDER);
    assertEquals(0, caseInsensitiveOrdering.compare("A", "a"));
    assertTrue(caseInsensitiveOrdering.compare("a", "B") < 0);