Zero

func Zero() TestDeep

Zero operator checks that data is 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.Zero())          // is true
td.Cmp(t, &AnyStruct{}, td.Zero())         // is false, coz pointer ≠ nil
td.Cmp(t, &AnyStruct{}, td.Ptr(td.Zero())) // is true

See also Zero godoc.

Example

Base example

CmpZero shortcut

func CmpZero(t TestingT, got interface{}, args ...interface{}) bool

CmpZero is a shortcut for:

td.Cmp(t, got, td.Zero(), 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 CmpZero godoc.

Example

Base example

T.Zero shortcut

func (t *T) Zero(got interface{}, args ...interface{}) bool

Zero is a shortcut for:

t.Cmp(got, td.Zero(), 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.Zero godoc.

Example

Base example