Added Pascal-Kebab case option to casing function

Author: Calvin Lobo

functions/core/casing.go

@@ -14,20 +14,22 @@ import (
 )
 
 const (
-	flat   string = "flat"
-	camel  string = "camel"
-	pascal string = "pascal"
-	kebab  string = "kebab"
-	cobol  string = "cobol"
-	snake  string = "snake"
-	macro  string = "macro"
+	flat        string = "flat"
+	camel       string = "camel"
+	pascal      string = "pascal"
+	pascalKebab string = "pascal-kebab"
+	kebab       string = "kebab"
+	cobol       string = "cobol"
+	snake       string = "snake"
+	macro       string = "macro"
 )
 
 // Casing is a rule that will check the value of a node to ensure it meets the required casing type.
 type Casing struct {
 	flat                  string
 	camel                 string
 	pascal                string
+	pascalKebab           string
 	kebab                 string
 	cobol                 string
 	snake                 string
@@ -142,6 +144,8 @@ func (c Casing) RunRule(nodes []*yaml.Node, context model.RuleFunctionContext) [
 		pattern = c.camel
 	case pascal:
 		pattern = c.pascal
+	case pascalKebab:
+		pattern = c.pascalKebab
 	case kebab:
 		pattern = c.kebab
 	case cobol:
@@ -229,6 +233,7 @@ func (c *Casing) compileExpressions() {
 	c.flat = fmt.Sprintf("[a-z][a-z%[1]s]*", digits)
 	c.camel = fmt.Sprintf("[a-z][a-z%[1]s]*(?:[A-Z%[1]s](?:[a-z%[1]s]+|$))*", digits)
 	c.pascal = fmt.Sprintf("[A-Z][a-z%[1]s]*(?:[A-Z%[1]s](?:[a-z%[1]s]+|$))*", digits)
+	c.pascalKebab = fmt.Sprintf("[A-Z][a-z%[1]s]*(-[A-Z][a-z%[1]s]*)*", digits)
 	c.kebab = fmt.Sprintf("[a-z%[1]s-]+", digits)
 	c.cobol = fmt.Sprintf("[A-Z%[1]s-]+", digits)
 	c.snake = fmt.Sprintf("[a-z%[1]s_]+", digits)

functions/core/casing_test.go

@@ -144,6 +144,67 @@ func TestCasing_RunRule_KebabFail(t *testing.T) {
 	assert.Len(t, res, 1)
 }
 
+func TestCasing_RunRule_PascalKebabSuccess(t *testing.T) {
+
+	testCases := []string{
+		`melody: "Is-What-Makes-Life-Worth-Living"`,
+		`melody: "Is-Living"`,
+		`melody: "Living"`,
+	}
+
+	for _, sampleYaml := range testCases {
+
+		path := "$.melody"
+
+		nodes, _ := gen_utils.FindNodes([]byte(sampleYaml), path)
+		assert.Len(t, nodes, 1)
+
+		opts := make(map[string]string)
+		opts["type"] = "pascal-kebab"
+
+		rule := buildCoreTestRule(path, model.SeverityError, "casing", "", nil)
+		ctx := buildCoreTestContext(model.CastToRuleAction(rule.Then), opts)
+		ctx.Given = path
+		ctx.Rule = &rule
+
+		def := &Casing{}
+		res := def.RunRule(nodes, ctx)
+
+		assert.Len(t, res, 0)
+	}
+}
+
+func TestCasing_RunRule_PascalKebabFail(t *testing.T) {
+
+	testCases := []string{
+		`melody: "Is-What-Makes-Life-Worth-living"`,
+		`melody: "Is-"`,
+		`melody: "Is-what"`,
+		`melody: "IS-WHAT"`,
+		`melody: "Is_What-Makes-life_worth-living"`,
+	}
+
+	for _, sampleYaml := range testCases {
+		path := "$.melody"
+
+		nodes, _ := gen_utils.FindNodes([]byte(sampleYaml), path)
+		assert.Len(t, nodes, 1)
+
+		opts := make(map[string]string)
+		opts["type"] = "pascal-kebab"
+
+		rule := buildCoreTestRule(path, model.SeverityError, "casing", "", nil)
+		ctx := buildCoreTestContext(model.CastToRuleAction(rule.Then), opts)
+		ctx.Given = path
+		ctx.Rule = &rule
+
+		def := &Casing{}
+		res := def.RunRule(nodes, ctx)
+
+		assert.Len(t, res, 1, "test case: '%s'", sampleYaml)
+	}
+}
+
 func TestCasing_RunRule_CobolSuccess(t *testing.T) {
 
 	sampleYaml := `maddy: "THE-LITTLE-CHAMPION"`