test(zfspv): vendor for ginkgo test code

Signed-off-by: Pawan <pawan@mayadata.io>

vendor/github.com/onsi/ginkgo/internal/codelocation/code_location.go

@@ -0,0 +1,48 @@
+package codelocation
+
+import (
+	"regexp"
+	"runtime"
+	"runtime/debug"
+	"strings"
+
+	"github.com/onsi/ginkgo/types"
+)
+
+func New(skip int) types.CodeLocation {
+	_, file, line, _ := runtime.Caller(skip + 1)
+	stackTrace := PruneStack(string(debug.Stack()), skip+1)
+	return types.CodeLocation{FileName: file, LineNumber: line, FullStackTrace: stackTrace}
+}
+
+// PruneStack removes references to functions that are internal to Ginkgo
+// and the Go runtime from a stack string and a certain number of stack entries
+// at the beginning of the stack. The stack string has the format
+// as returned by runtime/debug.Stack. The leading goroutine information is
+// optional and always removed if present. Beware that runtime/debug.Stack
+// adds itself as first entry, so typically skip must be >= 1 to remove that
+// entry.
+func PruneStack(fullStackTrace string, skip int) string {
+	stack := strings.Split(fullStackTrace, "\n")
+	// Ensure that the even entries are the method names and the
+	// the odd entries the source code information.
+	if len(stack) > 0 && strings.HasPrefix(stack[0], "goroutine ") {
+		// Ignore "goroutine 29 [running]:" line.
+		stack = stack[1:]
+	}
+	// The "+1" is for skipping over the initial entry, which is
+	// runtime/debug.Stack() itself.
+	if len(stack) > 2*(skip+1) {
+		stack = stack[2*(skip+1):]
+	}
+	prunedStack := []string{}
+	re := regexp.MustCompile(`\/ginkgo\/|\/pkg\/testing\/|\/pkg\/runtime\/`)
+	for i := 0; i < len(stack)/2; i++ {
+		// We filter out based on the source code file name.
+		if !re.Match([]byte(stack[i*2+1])) {
+			prunedStack = append(prunedStack, stack[i*2])
+			prunedStack = append(prunedStack, stack[i*2+1])
+		}
+	}
+	return strings.Join(prunedStack, "\n")
+}