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dex/vendor/github.com/ghodss/yaml/yaml_test.go

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2016-11-03 22:24:47 +00:00
package yaml
import (
"fmt"
"math"
"reflect"
"strconv"
"testing"
)
type MarshalTest struct {
A string
B int64
// Would like to test float64, but it's not supported in go-yaml.
// (See https://github.com/go-yaml/yaml/issues/83.)
C float32
}
func TestMarshal(t *testing.T) {
f32String := strconv.FormatFloat(math.MaxFloat32, 'g', -1, 32)
s := MarshalTest{"a", math.MaxInt64, math.MaxFloat32}
e := []byte(fmt.Sprintf("A: a\nB: %d\nC: %s\n", math.MaxInt64, f32String))
y, err := Marshal(s)
if err != nil {
t.Errorf("error marshaling YAML: %v", err)
}
if !reflect.DeepEqual(y, e) {
t.Errorf("marshal YAML was unsuccessful, expected: %#v, got: %#v",
string(e), string(y))
}
}
type UnmarshalString struct {
A string
True string
}
type UnmarshalStringMap struct {
A map[string]string
}
type UnmarshalNestedString struct {
A NestedString
}
type NestedString struct {
A string
}
type UnmarshalSlice struct {
A []NestedSlice
}
type NestedSlice struct {
B string
C *string
}
func TestUnmarshal(t *testing.T) {
y := []byte("a: 1")
s1 := UnmarshalString{}
e1 := UnmarshalString{A: "1"}
unmarshal(t, y, &s1, &e1)
y = []byte("a: true")
s1 = UnmarshalString{}
e1 = UnmarshalString{A: "true"}
unmarshal(t, y, &s1, &e1)
y = []byte("true: 1")
s1 = UnmarshalString{}
e1 = UnmarshalString{True: "1"}
unmarshal(t, y, &s1, &e1)
y = []byte("a:\n a: 1")
s2 := UnmarshalNestedString{}
e2 := UnmarshalNestedString{NestedString{"1"}}
unmarshal(t, y, &s2, &e2)
y = []byte("a:\n - b: abc\n c: def\n - b: 123\n c: 456\n")
s3 := UnmarshalSlice{}
e3 := UnmarshalSlice{[]NestedSlice{NestedSlice{"abc", strPtr("def")}, NestedSlice{"123", strPtr("456")}}}
unmarshal(t, y, &s3, &e3)
y = []byte("a:\n b: 1")
s4 := UnmarshalStringMap{}
e4 := UnmarshalStringMap{map[string]string{"b": "1"}}
unmarshal(t, y, &s4, &e4)
}
func unmarshal(t *testing.T, y []byte, s, e interface{}) {
err := Unmarshal(y, s)
if err != nil {
t.Errorf("error unmarshaling YAML: %v", err)
}
if !reflect.DeepEqual(s, e) {
t.Errorf("unmarshal YAML was unsuccessful, expected: %+#v, got: %+#v",
e, s)
}
}
type Case struct {
input string
output string
// By default we test that reversing the output == input. But if there is a
// difference in the reversed output, you can optionally specify it here.
reverse *string
}
type RunType int
const (
RunTypeJSONToYAML RunType = iota
RunTypeYAMLToJSON
)
func TestJSONToYAML(t *testing.T) {
cases := []Case{
{
`{"t":"a"}`,
"t: a\n",
nil,
}, {
`{"t":null}`,
"t: null\n",
nil,
},
}
runCases(t, RunTypeJSONToYAML, cases)
}
func TestYAMLToJSON(t *testing.T) {
cases := []Case{
{
"t: a\n",
`{"t":"a"}`,
nil,
}, {
"t: \n",
`{"t":null}`,
strPtr("t: null\n"),
}, {
"t: null\n",
`{"t":null}`,
nil,
}, {
"1: a\n",
`{"1":"a"}`,
strPtr("\"1\": a\n"),
}, {
"1000000000000000000000000000000000000: a\n",
`{"1e+36":"a"}`,
strPtr("\"1e+36\": a\n"),
}, {
"1e+36: a\n",
`{"1e+36":"a"}`,
strPtr("\"1e+36\": a\n"),
}, {
"\"1e+36\": a\n",
`{"1e+36":"a"}`,
nil,
}, {
"\"1.2\": a\n",
`{"1.2":"a"}`,
nil,
}, {
"- t: a\n",
`[{"t":"a"}]`,
nil,
}, {
"- t: a\n" +
"- t:\n" +
" b: 1\n" +
" c: 2\n",
`[{"t":"a"},{"t":{"b":1,"c":2}}]`,
nil,
}, {
`[{t: a}, {t: {b: 1, c: 2}}]`,
`[{"t":"a"},{"t":{"b":1,"c":2}}]`,
strPtr("- t: a\n" +
"- t:\n" +
" b: 1\n" +
" c: 2\n"),
}, {
"- t: \n",
`[{"t":null}]`,
strPtr("- t: null\n"),
}, {
"- t: null\n",
`[{"t":null}]`,
nil,
},
}
// Cases that should produce errors.
_ = []Case{
{
"~: a",
`{"null":"a"}`,
nil,
}, {
"a: !!binary gIGC\n",
"{\"a\":\"\x80\x81\x82\"}",
nil,
},
}
runCases(t, RunTypeYAMLToJSON, cases)
}
func runCases(t *testing.T, runType RunType, cases []Case) {
var f func([]byte) ([]byte, error)
var invF func([]byte) ([]byte, error)
var msg string
var invMsg string
if runType == RunTypeJSONToYAML {
f = JSONToYAML
invF = YAMLToJSON
msg = "JSON to YAML"
invMsg = "YAML back to JSON"
} else {
f = YAMLToJSON
invF = JSONToYAML
msg = "YAML to JSON"
invMsg = "JSON back to YAML"
}
for _, c := range cases {
// Convert the string.
t.Logf("converting %s\n", c.input)
output, err := f([]byte(c.input))
if err != nil {
t.Errorf("Failed to convert %s, input: `%s`, err: %v", msg, c.input, err)
}
// Check it against the expected output.
if string(output) != c.output {
t.Errorf("Failed to convert %s, input: `%s`, expected `%s`, got `%s`",
msg, c.input, c.output, string(output))
}
// Set the string that we will compare the reversed output to.
reverse := c.input
// If a special reverse string was specified, use that instead.
if c.reverse != nil {
reverse = *c.reverse
}
// Reverse the output.
input, err := invF(output)
if err != nil {
t.Errorf("Failed to convert %s, input: `%s`, err: %v", invMsg, string(output), err)
}
// Check the reverse is equal to the input (or to *c.reverse).
if string(input) != reverse {
t.Errorf("Failed to convert %s, input: `%s`, expected `%s`, got `%s`",
invMsg, string(output), reverse, string(input))
}
}
}
// To be able to easily fill in the *Case.reverse string above.
func strPtr(s string) *string {
return &s
}