Added properties encoder test

pkg/yqlib/encoder_properties.go

@@ -3,6 +3,7 @@ package yqlib
 import (
 	"fmt"
 	"io"
+	"strings"
 
 	"github.com/magiconair/properties"
 	yaml "gopkg.in/yaml.v3"
@@ -29,7 +30,9 @@ func (pe *propertiesEncoder) Encode(node *yaml.Node) error {
 }
 
 func (pe *propertiesEncoder) doEncode(p *properties.Properties, node *yaml.Node, path string) error {
-	p.SetComment(path, node.HeadComment+node.LineComment)
+	p.SetComment(path,
+		strings.Replace(node.HeadComment, "#", "", 1)+
+			strings.Replace(node.LineComment, "#", "", 1))
 	switch node.Kind {
 	case yaml.ScalarNode:
 		_, _, err := p.Set(path, node.Value)

pkg/yqlib/encoder_properties_test.go

@@ -0,0 +1,78 @@
+package yqlib
+
+import (
+	"bufio"
+	"bytes"
+	"strings"
+	"testing"
+
+	"github.com/mikefarah/yq/v4/test"
+)
+
+func yamlToProps(sampleYaml string) string {
+	var output bytes.Buffer
+	writer := bufio.NewWriter(&output)
+
+	var propsEncoder = NewPropertiesEncoder(writer)
+	inputs, err := readDocuments(strings.NewReader(sampleYaml), "sample.yml", 0)
+	if err != nil {
+		panic(err)
+	}
+	node := inputs.Front().Value.(*CandidateNode).Node
+	err = propsEncoder.Encode(node)
+	if err != nil {
+		panic(err)
+	}
+	writer.Flush()
+
+	return strings.TrimSuffix(output.String(), "\n")
+}
+
+func TestPropertiesEncoderSimple(t *testing.T) {
+	var sampleYaml = `a: 'bob cool'`
+
+	var expectedJson = `a = bob cool`
+	var actualProps = yamlToProps(sampleYaml)
+	test.AssertResult(t, expectedJson, actualProps)
+}
+
+func TestPropertiesEncoderSimpleWithComments(t *testing.T) {
+	var sampleYaml = `a: 'bob cool' # line`
+
+	var expectedJson = `# line
+a = bob cool`
+	var actualProps = yamlToProps(sampleYaml)
+	test.AssertResult(t, expectedJson, actualProps)
+}
+
+func TestPropertiesEncoderDeep(t *testing.T) {
+	var sampleYaml = `a: 
+  b: "bob cool"
+`
+
+	var expectedJson = `a.b = bob cool`
+	var actualProps = yamlToProps(sampleYaml)
+	test.AssertResult(t, expectedJson, actualProps)
+}
+
+func TestPropertiesEncoderDeepWithComments(t *testing.T) {
+	var sampleYaml = `a:  # a thing
+  b: "bob cool" # b thing
+`
+
+	var expectedJson = `# b thing
+a.b = bob cool`
+	var actualProps = yamlToProps(sampleYaml)
+	test.AssertResult(t, expectedJson, actualProps)
+}
+
+func TestPropertiesEncoderArray(t *testing.T) {
+	var sampleYaml = `a: 
+  b: [{c: dog}, {c: cat}]
+`
+
+	var expectedJson = `a.b.0.c = dog
+a.b.1.c = cat`
+	var actualProps = yamlToProps(sampleYaml)
+	test.AssertResult(t, expectedJson, actualProps)
+}