Cap
func Cap(expectedCap any) TestDeep
Cap is a smuggler operator. It takes data, applies cap() function
on it and compares its result to expectedCap. Of course, the
compared value must be an array, a channel or a slice.
expectedCap can be an int value:
td.Cmp(t, gotSlice, td.Cap(12))
as well as an other operator:
td.Cmp(t, gotSlice, td.Cap(td.Between(3, 4)))
See also Len.
See also Cap godoc.
Examples
Base example
t := &testing.T{}
got := make([]int, 0, 12)
ok := td.Cmp(t, got, td.Cap(12), "checks %v capacity is 12", got)
fmt.Println(ok)
ok = td.Cmp(t, got, td.Cap(0), "checks %v capacity is 0", got)
fmt.Println(ok)
got = nil
ok = td.Cmp(t, got, td.Cap(0), "checks %v capacity is 0", got)
fmt.Println(ok)
// Output:
// true
// false
// true
Operator example
t := &testing.T{}
got := make([]int, 0, 12)
ok := td.Cmp(t, got, td.Cap(td.Between(10, 12)),
"checks %v capacity is in [10 .. 12]", got)
fmt.Println(ok)
ok = td.Cmp(t, got, td.Cap(td.Gt(10)),
"checks %v capacity is in [10 .. 12]", got)
fmt.Println(ok)
// Output:
// true
// true
CmpCap shortcut
func CmpCap(t TestingT, got, expectedCap any, args ...any) bool
CmpCap is a shortcut for:
td.Cmp(t, got, td.Cap(expectedCap), 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 CmpCap godoc.
Examples
Base example
t := &testing.T{}
got := make([]int, 0, 12)
ok := td.CmpCap(t, got, 12, "checks %v capacity is 12", got)
fmt.Println(ok)
ok = td.CmpCap(t, got, 0, "checks %v capacity is 0", got)
fmt.Println(ok)
got = nil
ok = td.CmpCap(t, got, 0, "checks %v capacity is 0", got)
fmt.Println(ok)
// Output:
// true
// false
// true
Operator example
t := &testing.T{}
got := make([]int, 0, 12)
ok := td.CmpCap(t, got, td.Between(10, 12),
"checks %v capacity is in [10 .. 12]", got)
fmt.Println(ok)
ok = td.CmpCap(t, got, td.Gt(10),
"checks %v capacity is in [10 .. 12]", got)
fmt.Println(ok)
// Output:
// true
// true
T.Cap shortcut
func (t *T) Cap(got, expectedCap any, args ...any) bool
Cap is a shortcut for:
t.Cmp(got, td.Cap(expectedCap), 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.Cap godoc.
Examples
Base example
t := td.NewT(&testing.T{})
got := make([]int, 0, 12)
ok := t.Cap(got, 12, "checks %v capacity is 12", got)
fmt.Println(ok)
ok = t.Cap(got, 0, "checks %v capacity is 0", got)
fmt.Println(ok)
got = nil
ok = t.Cap(got, 0, "checks %v capacity is 0", got)
fmt.Println(ok)
// Output:
// true
// false
// true
Operator example
t := td.NewT(&testing.T{})
got := make([]int, 0, 12)
ok := t.Cap(got, td.Between(10, 12),
"checks %v capacity is in [10 .. 12]", got)
fmt.Println(ok)
ok = t.Cap(got, td.Gt(10),
"checks %v capacity is in [10 .. 12]", got)
fmt.Println(ok)
// Output:
// true
// true