NotZero
NotZero operator checks that data is not zero regarding its type.
nil is the zero value of pointers, maps, slices, channels and functions;- 0 is the zero value of numbers;
- "" is the 0 value of strings;
- false is the zero value of booleans;
- zero value of structs is the struct with no fields initialized.
Beware that:
td.Cmp(t, AnyStruct{}, td.NotZero()) // is false
td.Cmp(t, &AnyStruct{}, td.NotZero()) // is true, coz pointer ≠ nil
td.Cmp(t, &AnyStruct{}, td.Ptr(td.NotZero())) // is false
See also NotEmpty, NotNil and Zero.
See also NotZero godoc.
Example
Base example
t := &testing.T{}
ok := td.Cmp(t, 0, td.NotZero()) // fails
fmt.Println(ok)
ok = td.Cmp(t, float64(0), td.NotZero()) // fails
fmt.Println(ok)
ok = td.Cmp(t, 12, td.NotZero())
fmt.Println(ok)
ok = td.Cmp(t, (map[string]int)(nil), td.NotZero()) // fails, as nil
fmt.Println(ok)
ok = td.Cmp(t, map[string]int{}, td.NotZero()) // succeeds, as not nil
fmt.Println(ok)
ok = td.Cmp(t, ([]int)(nil), td.NotZero()) // fails, as nil
fmt.Println(ok)
ok = td.Cmp(t, []int{}, td.NotZero()) // succeeds, as not nil
fmt.Println(ok)
ok = td.Cmp(t, [3]int{}, td.NotZero()) // fails
fmt.Println(ok)
ok = td.Cmp(t, [3]int{0, 1}, td.NotZero()) // succeeds, DATA[1] is not 0
fmt.Println(ok)
ok = td.Cmp(t, bytes.Buffer{}, td.NotZero()) // fails
fmt.Println(ok)
ok = td.Cmp(t, &bytes.Buffer{}, td.NotZero()) // succeeds, as pointer not nil
fmt.Println(ok)
ok = td.Cmp(t, &bytes.Buffer{}, td.Ptr(td.NotZero())) // fails as deref by Ptr()
fmt.Println(ok)
// Output:
// false
// false
// true
// false
// true
// false
// true
// false
// true
// false
// true
// false
CmpNotZero shortcut
func CmpNotZero(t TestingT, got any, args ...any) bool
CmpNotZero is a shortcut for:
td.Cmp(t, got, td.NotZero(), 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 CmpNotZero godoc.
Example
Base example
t := &testing.T{}
ok := td.CmpNotZero(t, 0) // fails
fmt.Println(ok)
ok = td.CmpNotZero(t, float64(0)) // fails
fmt.Println(ok)
ok = td.CmpNotZero(t, 12)
fmt.Println(ok)
ok = td.CmpNotZero(t, (map[string]int)(nil)) // fails, as nil
fmt.Println(ok)
ok = td.CmpNotZero(t, map[string]int{}) // succeeds, as not nil
fmt.Println(ok)
ok = td.CmpNotZero(t, ([]int)(nil)) // fails, as nil
fmt.Println(ok)
ok = td.CmpNotZero(t, []int{}) // succeeds, as not nil
fmt.Println(ok)
ok = td.CmpNotZero(t, [3]int{}) // fails
fmt.Println(ok)
ok = td.CmpNotZero(t, [3]int{0, 1}) // succeeds, DATA[1] is not 0
fmt.Println(ok)
ok = td.CmpNotZero(t, bytes.Buffer{}) // fails
fmt.Println(ok)
ok = td.CmpNotZero(t, &bytes.Buffer{}) // succeeds, as pointer not nil
fmt.Println(ok)
ok = td.Cmp(t, &bytes.Buffer{}, td.Ptr(td.NotZero())) // fails as deref by Ptr()
fmt.Println(ok)
// Output:
// false
// false
// true
// false
// true
// false
// true
// false
// true
// false
// true
// false
T.NotZero shortcut
func (t *T) NotZero(got any, args ...any) bool
NotZero is a shortcut for:
t.Cmp(got, td.NotZero(), 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.NotZero godoc.
Example
Base example
t := td.NewT(&testing.T{})
ok := t.NotZero(0) // fails
fmt.Println(ok)
ok = t.NotZero(float64(0)) // fails
fmt.Println(ok)
ok = t.NotZero(12)
fmt.Println(ok)
ok = t.NotZero((map[string]int)(nil)) // fails, as nil
fmt.Println(ok)
ok = t.NotZero(map[string]int{}) // succeeds, as not nil
fmt.Println(ok)
ok = t.NotZero(([]int)(nil)) // fails, as nil
fmt.Println(ok)
ok = t.NotZero([]int{}) // succeeds, as not nil
fmt.Println(ok)
ok = t.NotZero([3]int{}) // fails
fmt.Println(ok)
ok = t.NotZero([3]int{0, 1}) // succeeds, DATA[1] is not 0
fmt.Println(ok)
ok = t.NotZero(bytes.Buffer{}) // fails
fmt.Println(ok)
ok = t.NotZero(&bytes.Buffer{}) // succeeds, as pointer not nil
fmt.Println(ok)
ok = t.Cmp(&bytes.Buffer{}, td.Ptr(td.NotZero())) // fails as deref by Ptr()
fmt.Println(ok)
// Output:
// false
// false
// true
// false
// true
// false
// true
// false
// true
// false
// true
// false