// This example demonstrates how to use a ConfigState.
func ExampleConfigState() {
// Modify the indent level of the ConfigState only. The global
// configuration is not modified.
scs := spew.ConfigState{Indent: "\t"}
// Output using the ConfigState instance.
v := map[string]int{"one": 1}
scs.Printf("v: %v\n", v)
scs.Dump(v)
// Output:
// v: map[one:1]
// (map[string]int) (len=1) {
// (string) (len=3) "one": (int) 1
// }
}
func TestDumpSortedKeys(t *testing.T) {
cfg := spew.ConfigState{SortKeys: true}
s := cfg.Sdump(map[int]string{1: "1", 3: "3", 2: "2"})
expected := `(map[int]string) (len=3) {
(int) 1: (string) (len=1) "1",
(int) 2: (string) (len=1) "2",
(int) 3: (string) (len=1) "3"
}
`
if s != expected {
t.Errorf("Sorted keys mismatch:\n %v %v", s, expected)
}
s = cfg.Sdump(map[stringer]int{"1": 1, "3": 3, "2": 2})
expected = `(map[spew_test.stringer]int) (len=3) {
(spew_test.stringer) (len=1) stringer 1: (int) 1,
(spew_test.stringer) (len=1) stringer 2: (int) 2,
(spew_test.stringer) (len=1) stringer 3: (int) 3
}
`
if s != expected {
t.Errorf("Sorted keys mismatch:\n %v %v", s, expected)
}
s = cfg.Sdump(map[pstringer]int{pstringer("1"): 1, pstringer("3"): 3, pstringer("2"): 2})
expected = `(map[spew_test.pstringer]int) (len=3) {
(spew_test.pstringer) (len=1) stringer 1: (int) 1,
(spew_test.pstringer) (len=1) stringer 2: (int) 2,
(spew_test.pstringer) (len=1) stringer 3: (int) 3
}
`
if s != expected {
t.Errorf("Sorted keys mismatch:\n %v %v", s, expected)
}
s = cfg.Sdump(map[customError]int{customError(1): 1, customError(3): 3, customError(2): 2})
expected = `(map[spew_test.customError]int) (len=3) {
(spew_test.customError) error: 1: (int) 1,
(spew_test.customError) error: 2: (int) 2,
(spew_test.customError) error: 3: (int) 3
}
`
if s != expected {
t.Errorf("Sorted keys mismatch:\n %v %v", s, expected)
}
}
// This example demonstrates how to use ConfigState.Dump to dump variables to
// stdout
func ExampleConfigState_Dump() {
// See the top-level Dump example for details on the types used in this
// example.
// Create two ConfigState instances with different indentation.
scs := spew.ConfigState{Indent: "\t"}
scs2 := spew.ConfigState{Indent: " "}
// Setup some sample data structures for the example.
bar := Bar{Flag(flagTwo), uintptr(0)}
s1 := Foo{bar, map[interface{}]interface{}{"one": true}}
// Dump using the ConfigState instances.
scs.Dump(s1)
scs2.Dump(s1)
// Output:
// (spew_test.Foo) {
// unexportedField: (spew_test.Bar) {
// flag: (spew_test.Flag) flagTwo,
// data: (uintptr) <nil>
// },
// ExportedField: (map[interface {}]interface {}) (len=1) {
// (string) (len=3) "one": (bool) true
// }
// }
// (spew_test.Foo) {
// unexportedField: (spew_test.Bar) {
// flag: (spew_test.Flag) flagTwo,
// data: (uintptr) <nil>
// },
// ExportedField: (map[interface {}]interface {}) (len=1) {
// (string) (len=3) "one": (bool) true
// }
// }
//
}