NotNaN
NotNaN operator checks that data is a float and is not not-a-number.
got := math.NaN()
td.Cmp(t, got, td.NotNaN()) // fails
td.Cmp(t, 4.2, td.NotNaN()) // succeeds
td.Cmp(t, 4, td.NotNaN()) // fails, as 4 is not a float
See also NaN.
See also NotNaN godoc.
Examples
Float32 example
t := &testing.T{}
got := float32(math.NaN())
ok := td.Cmp(t, got, td.NotNaN(),
"checks %v is not-a-number", got)
fmt.Println("float32(math.NaN()) is NOT float32 not-a-number:", ok)
got = 12
ok = td.Cmp(t, got, td.NotNaN(),
"checks %v is not-a-number", got)
fmt.Println("float32(12) is NOT float32 not-a-number:", ok)
// Output:
// float32(math.NaN()) is NOT float32 not-a-number: false
// float32(12) is NOT float32 not-a-number: true
Float64 example
t := &testing.T{}
got := math.NaN()
ok := td.Cmp(t, got, td.NotNaN(),
"checks %v is not-a-number", got)
fmt.Println("math.NaN() is not-a-number:", ok)
got = 12
ok = td.Cmp(t, got, td.NotNaN(),
"checks %v is not-a-number", got)
fmt.Println("float64(12) is not-a-number:", ok)
// math.NaN() is NOT not-a-number: false
// float64(12) is NOT not-a-number: true
CmpNotNaN shortcut
func CmpNotNaN(t TestingT, got any, args ...any) bool
CmpNotNaN is a shortcut for:
td.Cmp(t, got, td.NotNaN(), args...)
See above for details.
Returns true if the test is OK, false if it fails.
If t is a *T then its Config field is inherited.
args… are optional and allow to name the test. This name is
used in case of failure to qualify the test. If len(args) > 1 and
the first item of args is a string and contains a ‘%’ rune then
fmt.Fprintf is used to compose the name, else args are passed to
fmt.Fprint. Do not forget it is the name of the test, not the
reason of a potential failure.
See also CmpNotNaN godoc.
Examples
Float32 example
t := &testing.T{}
got := float32(math.NaN())
ok := td.CmpNotNaN(t, got,
"checks %v is not-a-number", got)
fmt.Println("float32(math.NaN()) is NOT float32 not-a-number:", ok)
got = 12
ok = td.CmpNotNaN(t, got,
"checks %v is not-a-number", got)
fmt.Println("float32(12) is NOT float32 not-a-number:", ok)
// Output:
// float32(math.NaN()) is NOT float32 not-a-number: false
// float32(12) is NOT float32 not-a-number: true
Float64 example
t := &testing.T{}
got := math.NaN()
ok := td.CmpNotNaN(t, got,
"checks %v is not-a-number", got)
fmt.Println("math.NaN() is not-a-number:", ok)
got = 12
ok = td.CmpNotNaN(t, got,
"checks %v is not-a-number", got)
fmt.Println("float64(12) is not-a-number:", ok)
// math.NaN() is NOT not-a-number: false
// float64(12) is NOT not-a-number: true
T.NotNaN shortcut
func (t *T) NotNaN(got any, args ...any) bool
NotNaN is a shortcut for:
t.Cmp(got, td.NotNaN(), args...)
See above for details.
Returns true if the test is OK, false if it fails.
args… are optional and allow to name the test. This name is
used in case of failure to qualify the test. If len(args) > 1 and
the first item of args is a string and contains a ‘%’ rune then
fmt.Fprintf is used to compose the name, else args are passed to
fmt.Fprint. Do not forget it is the name of the test, not the
reason of a potential failure.
See also T.NotNaN godoc.
Examples
Float32 example
t := td.NewT(&testing.T{})
got := float32(math.NaN())
ok := t.NotNaN(got,
"checks %v is not-a-number", got)
fmt.Println("float32(math.NaN()) is NOT float32 not-a-number:", ok)
got = 12
ok = t.NotNaN(got,
"checks %v is not-a-number", got)
fmt.Println("float32(12) is NOT float32 not-a-number:", ok)
// Output:
// float32(math.NaN()) is NOT float32 not-a-number: false
// float32(12) is NOT float32 not-a-number: true
Float64 example
t := td.NewT(&testing.T{})
got := math.NaN()
ok := t.NotNaN(got,
"checks %v is not-a-number", got)
fmt.Println("math.NaN() is not-a-number:", ok)
got = 12
ok = t.NotNaN(got,
"checks %v is not-a-number", got)
fmt.Println("float64(12) is not-a-number:", ok)
// math.NaN() is NOT not-a-number: false
// float64(12) is NOT not-a-number: true