package yqlib
import (
"bufio"
"bytes"
"fmt"
"strings"
"testing"
"github.com/mikefarah/yq/v4/test"
yaml "gopkg.in/yaml.v3"
)
func decodeXml(t *testing.T, s formatScenario) *CandidateNode {
decoder := NewXmlDecoder("+", "+content")
decoder.Init(strings.NewReader(s.input))
node := &yaml.Node{}
err := decoder.Decode(node)
if err != nil {
t.Error(err, "fail to decode", s.input)
}
expression := s.expression
if expression == "" {
expression = "."
}
exp, err := NewExpressionParser().ParseExpression(expression)
if err != nil {
t.Error(err)
return nil
}
candidateNode := CandidateNode{Node: node}
context, err := NewDataTreeNavigator().GetMatchingNodes(Context{MatchingNodes: candidateNode.AsList()}, exp)
if err != nil {
t.Error(err)
return nil
}
return context.MatchingNodes.Front().Value.(*CandidateNode)
}
func processXmlScenario(s formatScenario) string {
var output bytes.Buffer
writer := bufio.NewWriter(&output)
var encoder = NewXmlEncoder(2, "+", "+content")
var decoder = NewYamlDecoder()
if s.scenarioType == "roundtrip" {
decoder = NewXmlDecoder("+", "+content")
}
inputs, err := readDocuments(strings.NewReader(s.input), "sample.yml", 0, decoder)
if err != nil {
panic(err)
}
node := inputs.Front().Value.(*CandidateNode).Node
err = encoder.Encode(writer, node)
if err != nil {
panic(err)
}
writer.Flush()
return output.String()
}
type formatScenario struct {
input string
indent int
expression string
expected string
description string
subdescription string
skipDoc bool
scenarioType string
}
var inputXmlWithComments = `
3
z
`
var inputXmlWithCommentsWithSubChild = `
3
`
var expectedDecodeYamlWithSubChild = `D0, P[], (doc)::# before cat
cat:
# in cat before
x: "3" # multi
# line comment
# for x
# before y
y:
# in y before
d:
# in d before
z:
+sweet: cool
# in d after
# in y after
# in_cat_after
# after cat
`
var inputXmlWithCommentsWithArray = `
3
`
var expectedDecodeYamlWithArray = `D0, P[], (doc)::# before cat
cat:
# in cat before
x: "3" # multi
# line comment
# for x
# before y
y:
# in y before
d:
- # in d before
z:
+sweet: cool
# in d after
- # in d2 before
z:
+sweet: cool2
# in d2 after
# in y after
# in_cat_after
# after cat
`
var expectedDecodeYamlWithComments = `D0, P[], (doc)::# before cat
cat:
# in cat before
x: "3" # multi
# line comment
# for x
# before y
y:
# in y before
# in d before
d: z # in d after
# in y after
# in_cat_after
# after cat
`
var expectedRoundtripXmlWithComments = `
3
z
`
var yamlWithComments = `# above_cat
cat: # inline_cat
# above_array
array: # inline_array
- val1 # inline_val1
# above_val2
- val2 # inline_val2
# below_cat
`
var expectedXmlWithComments = `
val1
val2
`
var xmlScenarios = []formatScenario{
{
description: "Parse xml: simple",
subdescription: "Notice how all the values are strings, see the next example on how you can fix that.",
input: "\n\n meow\n 4\n true\n",
expected: "D0, P[], (doc)::cat:\n says: meow\n legs: \"4\"\n cute: \"true\"\n",
},
{
description: "Parse xml: number",
subdescription: "All values are assumed to be strings when parsing XML, but you can use the `from_yaml` operator on all the strings values to autoparse into the correct type.",
input: "\n\n meow\n 4\n true\n",
expression: " (.. | select(tag == \"!!str\")) |= from_yaml",
expected: "D0, P[], ()::cat:\n says: meow\n legs: 4\n cute: true\n",
},
{
description: "Parse xml: array",
subdescription: "Consecutive nodes with identical xml names are assumed to be arrays.",
input: "\ncat\ngoat",
expected: "D0, P[], (doc)::animal:\n - cat\n - goat\n",
},
{
description: "Parse xml: attributes",
subdescription: "Attributes are converted to fields, with the default attribute prefix '+'. Use '--xml-attribute-prefix` to set your own.",
input: "\n\n 7\n",
expected: "D0, P[], (doc)::cat:\n +legs: \"4\"\n legs: \"7\"\n",
},
{
description: "Parse xml: attributes with content",
subdescription: "Content is added as a field, using the default content name of `+content`. Use `--xml-content-name` to set your own.",
input: "\nmeow",
expected: "D0, P[], (doc)::cat:\n +content: meow\n +legs: \"4\"\n",
},
{
description: "Parse xml: with comments",
subdescription: "A best attempt is made to preserve comments.",
input: inputXmlWithComments,
expected: expectedDecodeYamlWithComments,
scenarioType: "decode",
},
{
description: "Parse xml: with comments subchild",
skipDoc: true,
input: inputXmlWithCommentsWithSubChild,
expected: expectedDecodeYamlWithSubChild,
scenarioType: "decode",
},
{
description: "Parse xml: with comments array",
skipDoc: true,
input: inputXmlWithCommentsWithArray,
expected: expectedDecodeYamlWithArray,
scenarioType: "decode",
},
{
description: "Encode xml: simple",
input: "cat: purrs",
expected: "purrs\n",
scenarioType: "encode",
},
{
description: "Encode xml: array",
input: "pets:\n cat:\n - purrs\n - meows",
expected: "\n purrs\n meows\n\n",
scenarioType: "encode",
},
{
description: "Encode xml: attributes",
subdescription: "Fields with the matching xml-attribute-prefix are assumed to be attributes.",
input: "cat:\n +name: tiger\n meows: true\n",
expected: "\n true\n\n",
scenarioType: "encode",
},
{
skipDoc: true,
input: "cat:\n ++name: tiger\n meows: true\n",
expected: "\n true\n\n",
scenarioType: "encode",
},
{
description: "Encode xml: attributes with content",
subdescription: "Fields with the matching xml-content-name is assumed to be content.",
input: "cat:\n +name: tiger\n +content: cool\n",
expected: "cool\n",
scenarioType: "encode",
},
{
description: "Encode xml: comments",
subdescription: "A best attempt is made to copy comments to xml.",
input: yamlWithComments,
expected: expectedXmlWithComments,
scenarioType: "encode",
},
{
description: "Round trip: with comments",
subdescription: "A best effort is made, but comment positions and white space are not preserved perfectly.",
input: inputXmlWithComments,
expected: expectedRoundtripXmlWithComments,
scenarioType: "roundtrip",
},
}
func testXmlScenario(t *testing.T, s formatScenario) {
if s.scenarioType == "encode" || s.scenarioType == "roundtrip" {
test.AssertResultWithContext(t, s.expected, processXmlScenario(s), s.description)
} else {
var actual = resultToString(t, decodeXml(t, s))
test.AssertResultWithContext(t, s.expected, actual, s.description)
}
}
func documentXmlScenario(t *testing.T, w *bufio.Writer, i interface{}) {
s := i.(formatScenario)
if s.skipDoc {
return
}
if s.scenarioType == "encode" {
documentXmlEncodeScenario(w, s)
} else if s.scenarioType == "roundtrip" {
documentXmlRoundTripScenario(w, s)
} else {
documentXmlDecodeScenario(t, w, s)
}
}
func documentXmlDecodeScenario(t *testing.T, w *bufio.Writer, s formatScenario) {
writeOrPanic(w, fmt.Sprintf("## %v\n", s.description))
if s.subdescription != "" {
writeOrPanic(w, s.subdescription)
writeOrPanic(w, "\n\n")
}
writeOrPanic(w, "Given a sample.xml file of:\n")
writeOrPanic(w, fmt.Sprintf("```xml\n%v\n```\n", s.input))
writeOrPanic(w, "then\n")
expression := s.expression
if expression == "" {
expression = "."
}
writeOrPanic(w, fmt.Sprintf("```bash\nyq e -p=xml '%v' sample.xml\n```\n", expression))
writeOrPanic(w, "will output\n")
var output bytes.Buffer
printer := NewSimpleYamlPrinter(bufio.NewWriter(&output), YamlOutputFormat, true, false, 2, true)
node := decodeXml(t, s)
err := printer.PrintResults(node.AsList())
if err != nil {
t.Error(err)
return
}
writeOrPanic(w, fmt.Sprintf("```yaml\n%v```\n\n", output.String()))
}
func documentXmlEncodeScenario(w *bufio.Writer, s formatScenario) {
writeOrPanic(w, fmt.Sprintf("## %v\n", s.description))
if s.subdescription != "" {
writeOrPanic(w, s.subdescription)
writeOrPanic(w, "\n\n")
}
writeOrPanic(w, "Given a sample.yml file of:\n")
writeOrPanic(w, fmt.Sprintf("```yaml\n%v\n```\n", s.input))
writeOrPanic(w, "then\n")
writeOrPanic(w, "```bash\nyq e -o=xml '.' sample.yml\n```\n")
writeOrPanic(w, "will output\n")
writeOrPanic(w, fmt.Sprintf("```xml\n%v```\n\n", processXmlScenario(s)))
}
func documentXmlRoundTripScenario(w *bufio.Writer, s formatScenario) {
writeOrPanic(w, fmt.Sprintf("## %v\n", s.description))
if s.subdescription != "" {
writeOrPanic(w, s.subdescription)
writeOrPanic(w, "\n\n")
}
writeOrPanic(w, "Given a sample.xml file of:\n")
writeOrPanic(w, fmt.Sprintf("```xml\n%v\n```\n", s.input))
writeOrPanic(w, "then\n")
writeOrPanic(w, "```bash\nyq e -p=xml -o=xml '.' sample.xml\n```\n")
writeOrPanic(w, "will output\n")
writeOrPanic(w, fmt.Sprintf("```xml\n%v```\n\n", processXmlScenario(s)))
}
func TestXmlScenarios(t *testing.T) {
for _, tt := range xmlScenarios {
testXmlScenario(t, tt)
}
genericScenarios := make([]interface{}, len(xmlScenarios))
for i, s := range xmlScenarios {
genericScenarios[i] = s
}
documentScenarios(t, "usage", "xml", genericScenarios, documentXmlScenario)
}