func (s *testFieldTypeSuite) TestDefaultTypeForValue(c *check.C) {
	nullType := DefaultTypeForValue(nil)
	di := &DataItem{Type: nullType}
	cases := []struct {
		value interface{}
		tp    byte
	}{
		{nil, mysql.TypeNull},
		{1, mysql.TypeLonglong},
		{uint64(1), mysql.TypeLonglong},
		{"abc", mysql.TypeVarString},
		{1.1, mysql.TypeNewDecimal},
		{[]byte("abc"), mysql.TypeBlob},
		{mysql.Bit{}, mysql.TypeBit},
		{mysql.Hex{}, mysql.TypeVarchar},
		{mysql.Time{Type: mysql.TypeDatetime}, mysql.TypeDatetime},
		{mysql.Duration{}, mysql.TypeDuration},
		{mysql.Decimal{}, mysql.TypeNewDecimal},
		{mysql.Enum{}, mysql.TypeEnum},
		{mysql.Set{}, mysql.TypeSet},
		{di, mysql.TypeNull},
	}
	for _, ca := range cases {
		ft := DefaultTypeForValue(ca.value)
		c.Assert(ft.Tp, check.Equals, ca.tp, check.Commentf("%v %v", ft, ca))
	}
}

// AfterTest gets the current goroutines and runs the returned function to
// get the goroutines at that time to contrast wheter any goroutines leaked.
// Usage: defer testleak.AfterTest(c)()
// It can call with BeforeTest() at the beginning of check.Suite.TearDownSuite() or
// call alone at the beginning of each test.
func AfterTest(c *check.C) func() {
	if len(beforeTestGorountines) == 0 {
		for _, g := range interestingGoroutines() {
			beforeTestGorountines[g] = true
		}
	}

	return func() {
		defer func() {
			beforeTestGorountines = map[string]bool{}
		}()

		var leaked []string
		for i := 0; i < 50; i++ {
			for _, g := range interestingGoroutines() {
				if !beforeTestGorountines[g] {
					leaked = append(leaked, g)
				}
			}
			// Bad stuff found, but goroutines might just still be
			// shutting down, so give it some time.
			if len(leaked) != 0 {
				leaked = leaked[:0]
				time.Sleep(50 * time.Millisecond)
				continue
			}

			return
		}
		for _, g := range leaked {
			c.Errorf("Test appears to have leaked: %v", g)
		}
	}
}

func (s *BootstrapS) TestLogfAndGetTestLog(c *check.C) {
	c.Logf("Hello %v", "there!")
	log := c.GetTestLog()
	if log != "Hello there!\n" {
		critical(fmt.Sprintf("Logf() or GetTestLog() is not working! Got: %#v", log))
	}
}

func testToFloat64(c *check.C, val interface{}, expect float64) {
	b, err := ToFloat64(val)
	c.Assert(err, check.IsNil)
	diff := math.Abs(b - expect)
	Epsilon := float64(0.00000001)
	c.Assert(Epsilon, check.Greater, diff)
}

func (s *FixtureHelper) Benchmark2(c *check.C) {
	s.trace("Benchmark2", c)
	c.SetBytes(1024)
	for i := 0; i < c.N; i++ {
		time.Sleep(s.sleep)
	}
}

func (s *CheckersS) TestComment(c *check.C) {
	bug := check.Commentf("a %d bc", 42)
	comment := bug.CheckCommentString()
	if comment != "a 42 bc" {
		c.Fatalf("Commentf returned %#v", comment)
	}
}

func (s *CheckersS) TestPanics(c *check.C) {
	testInfo(c, check.Panics, "Panics", []string{"function", "expected"})

	// Some errors.
	testCheck(c, check.Panics, false, "Function has not panicked", func() bool { return false }, "BOOM")
	testCheck(c, check.Panics, false, "Function must take zero arguments", 1, "BOOM")

	// Plain strings.
	testCheck(c, check.Panics, true, "", func() { panic("BOOM") }, "BOOM")
	testCheck(c, check.Panics, false, "", func() { panic("KABOOM") }, "BOOM")
	testCheck(c, check.Panics, true, "", func() bool { panic("BOOM") }, "BOOM")

	// Error values.
	testCheck(c, check.Panics, true, "", func() { panic(errors.New("BOOM")) }, errors.New("BOOM"))
	testCheck(c, check.Panics, false, "", func() { panic(errors.New("KABOOM")) }, errors.New("BOOM"))

	type deep struct{ i int }
	// Deep value
	testCheck(c, check.Panics, true, "", func() { panic(&deep{99}) }, &deep{99})

	// Verify params/names mutation
	params, names := testCheck(c, check.Panics, false, "", func() { panic(errors.New("KABOOM")) }, errors.New("BOOM"))
	c.Assert(params[0], check.ErrorMatches, "KABOOM")
	c.Assert(names[0], check.Equals, "panic")

	// Verify a nil panic
	testCheck(c, check.Panics, true, "", func() { panic(nil) }, nil)
	testCheck(c, check.Panics, false, "", func() { panic(nil) }, "NOPE")
}

func testHasKey(c *check.C, expectedResult bool, expectedErr string, params ...interface{}) {
	actualResult, actualErr := check.HasKey.Check(params, nil)
	if actualResult != expectedResult || actualErr != expectedErr {
		c.Fatalf(
			"Check returned (%#v, %#v) rather than (%#v, %#v)",
			actualResult, actualErr, expectedResult, expectedErr)
	}
}

func (s *FoundationS) TestExpectFailureSucceed(c *check.C) {
	helper := ExpectFailureSucceedHelper{}
	output := String{}
	result := check.Run(&helper, &check.RunConf{Output: &output})

	c.Assert(output.value, check.Equals, "")
	c.Assert(result.ExpectedFailures, check.Equals, 1)
}

func testInfo(c *check.C, checker check.Checker, name string, paramNames []string) {
	info := checker.Info()
	if info.Name != name {
		c.Fatalf("Got name %s, expected %s", info.Name, name)
	}
	if !reflect.DeepEqual(info.Params, paramNames) {
		c.Fatalf("Got param names %#v, expected %#v", info.Params, paramNames)
	}
}

func (s *FoundationS) TestSkip(c *check.C) {
	helper := SkipTestHelper{}
	output := String{}
	check.Run(&helper, &check.RunConf{Output: &output})

	if output.value != "" {
		c.Error("Skip() logged something:\n", output.value)
	}
}

func (s *BootstrapS) TestMinLogger(c *check.C) {
	var logger minLogger
	logger = log.New(os.Stderr, "", 0)
	logger = c
	logger.Output(0, "Hello there")
	expected := `\[LOG\] [0-9]+:[0-9][0-9]\.[0-9][0-9][0-9] +Hello there\n`
	output := c.GetTestLog()
	c.Assert(output, check.Matches, expected)
}

func (s *HelpersS) TestCheckSucceedWithoutExpected(c *check.C) {
	checker := &MyChecker{result: true, info: &check.CheckerInfo{Params: []string{"myvalue"}}}
	testHelperSuccess(c, "Check(1, checker)", true, func() interface{} {
		return c.Check(1, checker)
	})
	if !reflect.DeepEqual(checker.params, []interface{}{1}) {
		c.Fatalf("Bad params for check: %#v", checker.params)
	}
}

func (s *HelpersS) TestCheckSucceedWithExpected(c *check.C) {
	checker := &MyChecker{result: true}
	testHelperSuccess(c, "Check(1, checker, 2)", true, func() interface{} {
		return c.Check(1, checker, 2)
	})
	if !reflect.DeepEqual(checker.params, []interface{}{1, 2}) {
		c.Fatalf("Bad params for check: %#v", checker.params)
	}
}

func accept(c *check.C, tp byte, value interface{}, unsigned bool, expected string) {
	ft := NewFieldType(tp)
	if unsigned {
		ft.Flag |= mysql.UnsignedFlag
	}
	//	casted, err := col.CastValue(nil, value)
	casted, err := Convert(value, ft)
	c.Assert(err, check.IsNil, check.Commentf("%v", ft))
	c.Assert(fmt.Sprintf("%v", casted), check.Equals, expected)
}

func (s *HelpersS) TestCheckWithNilChecker(c *check.C) {
	log := "(?s)helpers_test\\.go:[0-9]+:.*\nhelpers_test\\.go:[0-9]+:\n" +
		"    return c\\.Check\\(1, nil\\)\n" +
		"\\.+ Check\\(obtained, nil!\\?, \\.\\.\\.\\):\n" +
		"\\.+ Oops\\.\\. you've provided a nil checker!\n\n"
	testHelperFailure(c, "Check(obtained, nil)", false, false, log,
		func() interface{} {
			return c.Check(1, nil)
		})
}

func (s *HelpersS) TestCheckFailWithoutExpected(c *check.C) {
	checker := &MyChecker{result: false, info: &check.CheckerInfo{Params: []string{"myvalue"}}}
	log := "(?s)helpers_test\\.go:[0-9]+:.*\nhelpers_test\\.go:[0-9]+:\n" +
		"    return c\\.Check\\(1, checker\\)\n" +
		"\\.+ myvalue int = 1\n\n"
	testHelperFailure(c, "Check(1, checker)", false, false, log,
		func() interface{} {
			return c.Check(1, checker)
		})
}

func (s *HelpersS) TestValueLoggingWithArrays(c *check.C) {
	checker := &MyChecker{result: false}
	log := "(?s)helpers_test.go:[0-9]+:.*\nhelpers_test.go:[0-9]+:\n" +
		"    return c\\.Check\\(\\[\\]byte{1, 2}, checker, \\[\\]byte{1, 3}\\)\n" +
		"\\.+ myobtained \\[\\]uint8 = \\[\\]byte{0x1, 0x2}\n" +
		"\\.+ myexpected \\[\\]uint8 = \\[\\]byte{0x1, 0x3}\n\n"
	testHelperFailure(c, "Check([]byte{1}, chk, []byte{3})", false, false, log,
		func() interface{} {
			return c.Check([]byte{1, 2}, checker, []byte{1, 3})
		})
}

func (s *HelpersS) TestAssertFailWithoutExpected(c *check.C) {
	checker := &MyChecker{result: false, info: &check.CheckerInfo{Params: []string{"myvalue"}}}
	log := "(?s)helpers_test\\.go:[0-9]+:.*\nhelpers_test\\.go:[0-9]+:\n" +
		"    c\\.Assert\\(1, checker\\)\n" +
		"\\.+ myvalue int = 1\n\n"
	testHelperFailure(c, "Assert(1, checker)", nil, true, log,
		func() interface{} {
			c.Assert(1, checker)
			return nil
		})
}

func (s *HelpersS) TestCheckFailWithoutExpectedAndMessage(c *check.C) {
	checker := &MyChecker{result: false, info: &check.CheckerInfo{Params: []string{"myvalue"}}}
	log := "(?s)helpers_test\\.go:[0-9]+:.*\nhelpers_test\\.go:[0-9]+:\n" +
		"    return c\\.Check\\(1, checker, myComment\\(\"Hello world!\"\\)\\)\n" +
		"\\.+ myvalue int = 1\n" +
		"\\.+ Hello world!\n\n"
	testHelperFailure(c, "Check(1, checker, msg)", false, false, log,
		func() interface{} {
			return c.Check(1, checker, myComment("Hello world!"))
		})
}