Add more tests (#1949)

* add more test code

* add more test code

pkg/simple/client/ldap/simple_ldap_test.go

@@ -0,0 +1,98 @@
+package ldap
+
+import (
+	"github.com/google/go-cmp/cmp"
+	"kubesphere.io/kubesphere/pkg/api/iam"
+	"testing"
+	"time"
+)
+
+func TestSimpleLdap(t *testing.T) {
+	ldapClient := NewSimpleLdap()
+
+	foo := &iam.User{
+		Username:    "jerry",
+		Email:       "jerry@kubesphere.io",
+		Lang:        "en",
+		Description: "Jerry is kind and gentle.",
+		CreateTime:  time.Now(),
+		Groups:      []string{},
+		Password:    "P@88w0rd",
+	}
+
+	t.Run("should create user", func(t *testing.T) {
+		err := ldapClient.Create(foo)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		// check if user really created
+		user, err := ldapClient.Get(foo.Username)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if diff := cmp.Diff(user, foo); len(diff) != 0 {
+			t.Fatalf("%T differ (-got, +want): %s", user, diff)
+		}
+
+		_ = ldapClient.Delete(foo.Username)
+	})
+
+	t.Run("should update user", func(t *testing.T) {
+		err := ldapClient.Create(foo)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		foo.Description = "Jerry needs some drinks."
+		err = ldapClient.Update(foo)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		// check if user really created
+		user, err := ldapClient.Get(foo.Username)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if diff := cmp.Diff(user, foo); len(diff) != 0 {
+			t.Fatalf("%T differ (-got, +want): %s", user, diff)
+		}
+
+		_ = ldapClient.Delete(foo.Username)
+	})
+
+	t.Run("should delete user", func(t *testing.T) {
+		err := ldapClient.Create(foo)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		err = ldapClient.Delete(foo.Username)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		_, err = ldapClient.Get(foo.Username)
+		if err == nil || err != ErrUserNotExists {
+			t.Fatalf("expected ErrUserNotExists error, got %v", err)
+		}
+	})
+
+	t.Run("should verify username and password", func(t *testing.T) {
+		err := ldapClient.Create(foo)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		err = ldapClient.Verify(foo.Username, foo.Password)
+		if err != nil {
+			t.Fatalf("should pass but got an error %v", err)
+		}
+
+		err = ldapClient.Verify(foo.Username, "gibberish")
+		if err == nil || err != ErrInvalidCredentials {
+			t.Fatalf("expected error ErrInvalidCrenentials but got %v", err)
+		}
+	})
+}