Slice
func Slice(model any, expectedEntries ArrayEntries) TestDeep
Slice operator compares the contents of a slice or a pointer on a
slice against the values of model and the values of
expectedEntries. Entries with zero values of model are ignored
if the same entry is present in expectedEntries, otherwise they
are taken into account. An entry cannot be present in both model
and expectedEntries, except if it is a zero-value in model. At
the end, all entries are checked. To check only some entries of a
slice, see SuperSliceOf operator.
model must be the same type as compared data.
expectedEntries can be nil, if no zero entries are expected and
no TestDeep operators are involved.
got := []int{12, 14, 17}
td.Cmp(t, got, td.Slice([]int{0, 14}, td.ArrayEntries{0: 12, 2: 17})) // succeeds
td.Cmp(t, &got,
td.Slice(&[]int{0, 14}, td.ArrayEntries{0: td.Gt(10), 2: td.Gt(15)})) // succeeds
TypeBehind method returns the reflect.Type of model.
See also Array and SuperSliceOf.
See also Slice godoc.
Examples
Slice example
t := &testing.T{}
got := []int{42, 58, 26}
ok := td.Cmp(t, got, td.Slice([]int{42}, td.ArrayEntries{1: 58, 2: td.Ignore()}),
"checks slice %v", got)
fmt.Println(ok)
ok = td.Cmp(t, got,
td.Slice([]int{}, td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()}),
"checks slice %v", got)
fmt.Println(ok)
ok = td.Cmp(t, got,
td.Slice(([]int)(nil), td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()}),
"checks slice %v", got)
fmt.Println(ok)
// Output:
// true
// true
// true
TypedSlice example
t := &testing.T{}
type MySlice []int
got := MySlice{42, 58, 26}
ok := td.Cmp(t, got, td.Slice(MySlice{42}, td.ArrayEntries{1: 58, 2: td.Ignore()}),
"checks typed slice %v", got)
fmt.Println(ok)
ok = td.Cmp(t, &got, td.Slice(&MySlice{42}, td.ArrayEntries{1: 58, 2: td.Ignore()}),
"checks pointer on typed slice %v", got)
fmt.Println(ok)
ok = td.Cmp(t, &got,
td.Slice(&MySlice{}, td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()}),
"checks pointer on typed slice %v", got)
fmt.Println(ok)
ok = td.Cmp(t, &got,
td.Slice((*MySlice)(nil), td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()}),
"checks pointer on typed slice %v", got)
fmt.Println(ok)
// Output:
// true
// true
// true
// true
CmpSlice shortcut
func CmpSlice(t TestingT, got, model any, expectedEntries ArrayEntries, args ...any) bool
CmpSlice is a shortcut for:
td.Cmp(t, got, td.Slice(model, expectedEntries), 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 CmpSlice godoc.
Examples
Slice example
t := &testing.T{}
got := []int{42, 58, 26}
ok := td.CmpSlice(t, got, []int{42}, td.ArrayEntries{1: 58, 2: td.Ignore()},
"checks slice %v", got)
fmt.Println(ok)
ok = td.CmpSlice(t, got, []int{}, td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()},
"checks slice %v", got)
fmt.Println(ok)
ok = td.CmpSlice(t, got, ([]int)(nil), td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()},
"checks slice %v", got)
fmt.Println(ok)
// Output:
// true
// true
// true
TypedSlice example
t := &testing.T{}
type MySlice []int
got := MySlice{42, 58, 26}
ok := td.CmpSlice(t, got, MySlice{42}, td.ArrayEntries{1: 58, 2: td.Ignore()},
"checks typed slice %v", got)
fmt.Println(ok)
ok = td.CmpSlice(t, &got, &MySlice{42}, td.ArrayEntries{1: 58, 2: td.Ignore()},
"checks pointer on typed slice %v", got)
fmt.Println(ok)
ok = td.CmpSlice(t, &got, &MySlice{}, td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()},
"checks pointer on typed slice %v", got)
fmt.Println(ok)
ok = td.CmpSlice(t, &got, (*MySlice)(nil), td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()},
"checks pointer on typed slice %v", got)
fmt.Println(ok)
// Output:
// true
// true
// true
// true
T.Slice shortcut
func (t *T) Slice(got, model any, expectedEntries ArrayEntries, args ...any) bool
Slice is a shortcut for:
t.Cmp(got, td.Slice(model, expectedEntries), 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.Slice godoc.
Examples
Slice example
t := td.NewT(&testing.T{})
got := []int{42, 58, 26}
ok := t.Slice(got, []int{42}, td.ArrayEntries{1: 58, 2: td.Ignore()},
"checks slice %v", got)
fmt.Println(ok)
ok = t.Slice(got, []int{}, td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()},
"checks slice %v", got)
fmt.Println(ok)
ok = t.Slice(got, ([]int)(nil), td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()},
"checks slice %v", got)
fmt.Println(ok)
// Output:
// true
// true
// true
TypedSlice example
t := td.NewT(&testing.T{})
type MySlice []int
got := MySlice{42, 58, 26}
ok := t.Slice(got, MySlice{42}, td.ArrayEntries{1: 58, 2: td.Ignore()},
"checks typed slice %v", got)
fmt.Println(ok)
ok = t.Slice(&got, &MySlice{42}, td.ArrayEntries{1: 58, 2: td.Ignore()},
"checks pointer on typed slice %v", got)
fmt.Println(ok)
ok = t.Slice(&got, &MySlice{}, td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()},
"checks pointer on typed slice %v", got)
fmt.Println(ok)
ok = t.Slice(&got, (*MySlice)(nil), td.ArrayEntries{0: 42, 1: 58, 2: td.Ignore()},
"checks pointer on typed slice %v", got)
fmt.Println(ok)
// Output:
// true
// true
// true
// true