Create module to parse path and extract id value

Author: zucchinidev

api/path.go

@@ -0,0 +1,26 @@
+package main
+
+import "strings"
+
+const PathSeparator = "/"
+
+type Path struct {
+	Path string
+	ID   string
+}
+
+func NewPath(p string) *Path {
+	var id string
+	p = strings.Trim(p, PathSeparator)
+	s := strings.Split(p, PathSeparator)
+	if len(s) > 1 {
+		lastIndex := len(s) - 1
+		id = s[lastIndex]
+		p = strings.Join(s[:lastIndex], PathSeparator)
+	}
+	return &Path{Path: p, ID: id}
+}
+
+func (p *Path) HasID() bool {
+	return len(p.ID) > 0
+}

api/path_test.go

@@ -0,0 +1,35 @@
+package main
+
+import "testing"
+
+func TestNewPath(t *testing.T) {
+	for _, testCase := range getTestCases() {
+		newPath := NewPath(testCase.OriginalPath)
+		if testCase.Path != newPath.Path {
+			t.Errorf("Error parsing the path, we expected %s, got %s", testCase.Path, newPath.Path)
+		}
+
+		if testCase.HasId != newPath.HasID() {
+			t.Errorf("Error checking the has id, we expected %v, got %v", testCase.HasId, newPath.HasID())
+		}
+
+		if testCase.ID != newPath.ID {
+			t.Errorf("Error getting the identifier, we expected %s, got %s", testCase.ID, newPath.ID)
+		}
+	}
+}
+
+type newPathTestCase struct {
+	OriginalPath string
+	Path         string
+	ID           string
+	HasId        bool
+}
+
+func getTestCases() []newPathTestCase {
+	return []newPathTestCase{
+		{OriginalPath: "/", Path: "", ID: "", HasId: false},
+		{OriginalPath: "/people/", Path: "people", ID: "", HasId: false},
+		{OriginalPath: "/people/1", Path: "people", ID: "1", HasId: true},
+	}
+}