SubBagOf
func SubBagOf(expectedItems ...interface{}) TestDeep
SubBagOf operator compares the contents of an array or a slice (or a
pointer on array/slice) without taking care of the order of items.
During a match, each array/slice item should be matched by an
expected item to succeed. But some expected items can be missing
from the compared array/slice.
td.Cmp(t, []int{1}, td.SubBagOf(1, 1, 2)) // succeeds
td.Cmp(t, []int{1, 1, 1}, td.SubBagOf(1, 1, 2)) // fails, one 1 is an extra item
// works with slices/arrays of any type
td.Cmp(t, personSlice, td.SubBagOf(
Person{Name: "Bob", Age: 32},
Person{Name: "Alice", Age: 26},
))
To flatten a non-[]interface{} slice/array, use Flatten function
and so avoid boring and inefficient copies:
expected := []int{1, 2, 1}
td.Cmp(t, []int{1}, td.SubBagOf(td.Flatten(expected))) // succeeds
// = td.Cmp(t, []int{1}, td.SubBagOf(1, 2, 1))
exp1 := []int{5, 1, 1}
exp2 := []int{8, 42, 3}
td.Cmp(t, []int{1, 42, 3},
td.SubBagOf(td.Flatten(exp1), 3, td.Flatten(exp2))) // succeeds
// = td.Cmp(t, []int{1, 42, 3}, td.SubBagOf(5, 1, 1, 3, 8, 42, 3))
TypeBehind method can return a non-nil reflect.Type if all items
known non-interface types are equal, or if only interface types
are found (mostly issued from Isa()) and they are equal.
See also SubBagOf godoc.
Example
Base example
t := &testing.T{}
got := []int{1, 3, 5, 8, 8, 1, 2}
ok := td.Cmp(t, got, td.SubBagOf(0, 0, 1, 1, 2, 2, 3, 3, 5, 5, 8, 8, 9, 9),
"checks at least all items are present, in any order")
fmt.Println(ok)
// got contains one 8 too many
ok = td.Cmp(t, got, td.SubBagOf(0, 0, 1, 1, 2, 2, 3, 3, 5, 5, 8, 9, 9),
"checks at least all items are present, in any order")
fmt.Println(ok)
got = []int{1, 3, 5, 2}
ok = td.Cmp(t, got, td.SubBagOf(
td.Between(0, 3),
td.Between(0, 3),
td.Between(0, 3),
td.Between(0, 3),
td.Gt(4),
td.Gt(4)),
"checks at least all items match, in any order with TestDeep operators")
fmt.Println(ok)
// When expected is already a non-[]interface{} slice, it cannot be
// flattened directly using expected... without copying it to a new
// []interface{} slice, then use td.Flatten!
expected := []int{1, 2, 3, 5, 9, 8}
ok = td.Cmp(t, got, td.SubBagOf(td.Flatten(expected)),
"checks at least all expected items are present, in any order")
fmt.Println(ok)
// Output:
// true
// false
// true
// true
CmpSubBagOf shortcut
func CmpSubBagOf(t TestingT, got interface{}, expectedItems []interface{}, args ...interface{}) bool
CmpSubBagOf is a shortcut for:
td.Cmp(t, got, td.SubBagOf(expectedItems...), 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 CmpSubBagOf godoc.
Example
Base example
t := &testing.T{}
got := []int{1, 3, 5, 8, 8, 1, 2}
ok := td.CmpSubBagOf(t, got, []interface{}{0, 0, 1, 1, 2, 2, 3, 3, 5, 5, 8, 8, 9, 9},
"checks at least all items are present, in any order")
fmt.Println(ok)
// got contains one 8 too many
ok = td.CmpSubBagOf(t, got, []interface{}{0, 0, 1, 1, 2, 2, 3, 3, 5, 5, 8, 9, 9},
"checks at least all items are present, in any order")
fmt.Println(ok)
got = []int{1, 3, 5, 2}
ok = td.CmpSubBagOf(t, got, []interface{}{td.Between(0, 3), td.Between(0, 3), td.Between(0, 3), td.Between(0, 3), td.Gt(4), td.Gt(4)},
"checks at least all items match, in any order with TestDeep operators")
fmt.Println(ok)
// When expected is already a non-[]interface{} slice, it cannot be
// flattened directly using expected... without copying it to a new
// []interface{} slice, then use td.Flatten!
expected := []int{1, 2, 3, 5, 9, 8}
ok = td.CmpSubBagOf(t, got, []interface{}{td.Flatten(expected)},
"checks at least all expected items are present, in any order")
fmt.Println(ok)
// Output:
// true
// false
// true
// true
T.SubBagOf shortcut
func (t *T) SubBagOf(got interface{}, expectedItems []interface{}, args ...interface{}) bool
SubBagOf is a shortcut for:
t.Cmp(got, td.SubBagOf(expectedItems...), 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.SubBagOf godoc.
Example
Base example
t := td.NewT(&testing.T{})
got := []int{1, 3, 5, 8, 8, 1, 2}
ok := t.SubBagOf(got, []interface{}{0, 0, 1, 1, 2, 2, 3, 3, 5, 5, 8, 8, 9, 9},
"checks at least all items are present, in any order")
fmt.Println(ok)
// got contains one 8 too many
ok = t.SubBagOf(got, []interface{}{0, 0, 1, 1, 2, 2, 3, 3, 5, 5, 8, 9, 9},
"checks at least all items are present, in any order")
fmt.Println(ok)
got = []int{1, 3, 5, 2}
ok = t.SubBagOf(got, []interface{}{td.Between(0, 3), td.Between(0, 3), td.Between(0, 3), td.Between(0, 3), td.Gt(4), td.Gt(4)},
"checks at least all items match, in any order with TestDeep operators")
fmt.Println(ok)
// When expected is already a non-[]interface{} slice, it cannot be
// flattened directly using expected... without copying it to a new
// []interface{} slice, then use td.Flatten!
expected := []int{1, 2, 3, 5, 9, 8}
ok = t.SubBagOf(got, []interface{}{td.Flatten(expected)},
"checks at least all expected items are present, in any order")
fmt.Println(ok)
// Output:
// true
// false
// true
// true