diff --git a/server/notification-providers/line.js b/server/notification-providers/line.js
index 327696e..a9c2f58 100644
--- a/server/notification-providers/line.js
+++ b/server/notification-providers/line.js
@@ -7,7 +7,6 @@ class Line extends NotificationProvider {
     name = "line";
 
     async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
-        let okMsg = "Sent Successfully.";
         try {
             let lineAPIUrl = "https://api.line.me/v2/bot/message/push";
             let config = {
@@ -25,34 +24,34 @@ class Line extends NotificationProvider {
                             "text": "Test Successful!"
                         }
                     ]
-                }
-                await axios.post(lineAPIUrl, testMessage, config)
+                };
+                await axios.post(lineAPIUrl, testMessage, config);
             } else if (heartbeatJSON["status"] == DOWN) {
                 let downMessage = {
                     "to": notification.lineUserID,
                     "messages": [
                         {
                             "type": "text",
-                            "text": "UptimeKuma Alert: [🔴 Down]\n" + "Name: " + monitorJSON["name"] + " \n" + heartbeatJSON["msg"] + "\nTime (UTC): " + heartbeatJSON["time"]
+                            "text": "UptimeKuma Alert: [🔴 Down]\n" + "Name: " + monitorJSON["name"] + "\n" + heartbeatJSON["msg"] + "\nTime (UTC): " + heartbeatJSON["time"]
                         }
                     ]
-                }
-                await axios.post(lineAPIUrl, downMessage, config)
+                };
+                await axios.post(lineAPIUrl, downMessage, config);
             } else if (heartbeatJSON["status"] == UP) {
                 let upMessage = {
                     "to": notification.lineUserID,
                     "messages": [
                         {
                             "type": "text",
-                            "text": "UptimeKuma Alert: [✅ Up]\n" + "Name: " + monitorJSON["name"] + " \n" + heartbeatJSON["msg"] + "\nTime (UTC): " + heartbeatJSON["time"]
+                            "text": "UptimeKuma Alert: [✅ Up]\n" + "Name: " + monitorJSON["name"] + "\n" + heartbeatJSON["msg"] + "\nTime (UTC): " + heartbeatJSON["time"]
                         }
                     ]
-                }
-                await axios.post(lineAPIUrl, upMessage, config)
+                };
+                await axios.post(lineAPIUrl, upMessage, config);
             }
-            return okMsg;
+            return this.sendSuccess;
         } catch (error) {
-            this.throwGeneralAxiosError(error)
+            this.throwGeneralAxiosError(error);
         }
     }
 }
diff --git a/server/notification-providers/line.spec.js b/server/notification-providers/line.spec.js
index 10aa265..97b8631 100644
--- a/server/notification-providers/line.spec.js
+++ b/server/notification-providers/line.spec.js
@@ -1,13 +1,15 @@
-// jest.mock("nodemailer", () => ({
-//     createTransport: jest.fn(),
-// }));
+jest.mock("axios", () => ({
+    post: jest.fn(),
+}));
 
-// const mockNodeMailer = require("nodemailer");
+const axios = require("axios");
+const { UP, DOWN } = require("../../src/util");
+const NotificationSend = require("../notification");
 
 const Line = require("./line");
 
 beforeEach(() => {
-    // mockNodeMailer.createTransport.mockReset();
+    axios.post.mockReset();
 });
 
 describe("notification default information", () => {
@@ -16,3 +18,215 @@ describe("notification default information", () => {
         expect(notification.name).toBe("line");
     });
 });
+
+describe("notification to act properly on send", () => {
+    it("should call axios with the proper default data when UP", async () => {
+
+        let response = {
+            data: {
+                Message: "OK"
+            }
+        };
+        axios.post.mockResolvedValueOnce(response);
+
+        let notif = new Line();
+        let notificationConf = {
+            type: "line",
+            lineUserID: "1234",
+            lineChannelAccessToken: "token"
+        };
+        let msg = "PassedInMessage";
+        let monitorConf = {
+            type: "http",
+            url: "https://www.google.com",
+            name: "testing",
+        };
+        let heartbeatConf = {
+            status: UP,
+            msg: "some message",
+            time: "example time",
+        };
+        let res = await notif.send(notificationConf, msg, monitorConf, heartbeatConf);
+
+        expect(axios.post).toHaveBeenCalledWith("https://api.line.me/v2/bot/message/push", {
+            messages: [
+                {
+                    text: "UptimeKuma Alert: [✅ Up]\nName: testing\nsome message\nTime (UTC): example time",
+                    type: "text",
+                },
+            ],
+            to: "1234",
+        }, {
+            headers: {
+                "Authorization": "Bearer token",
+                "Content-Type": "application/json",
+            },
+        });
+        expect(res).toBe("Sent Successfully.");
+    });
+    it("should call axios with the proper default data when DOWN", async () => {
+
+        let response = {
+            data: {
+                Message: "OK"
+            }
+        };
+        axios.post.mockResolvedValueOnce(response);
+
+        let notif = new Line();
+        let notificationConf = {
+            type: "line",
+            lineUserID: "1234",
+            lineChannelAccessToken: "token"
+        };
+        let msg = "PassedInMessage";
+        let monitorConf = {
+            type: "http",
+            url: "https://www.google.com",
+            name: "testing",
+        };
+        let heartbeatConf = {
+            status: DOWN,
+            msg: "some message",
+            time: "example time",
+        };
+        let res = await notif.send(notificationConf, msg, monitorConf, heartbeatConf);
+
+        expect(axios.post).toHaveBeenCalledWith("https://api.line.me/v2/bot/message/push", {
+            messages: [
+                {
+                    text: "UptimeKuma Alert: [🔴 Down]\nName: testing\nsome message\nTime (UTC): example time",
+                    type: "text",
+                },
+            ],
+            to: "1234",
+        }, {
+            headers: {
+                "Authorization": "Bearer token",
+                "Content-Type": "application/json",
+            },
+        });
+        expect(res).toBe("Sent Successfully.");
+    });
+
+    it("should call axios with the proper data when monitor nil", async () => {
+        let response = {
+            data: {
+                Message: "OK"
+            }
+        };
+        axios.post.mockResolvedValueOnce(response);
+
+        let notif = new Line();
+        let notificationConf = {
+            type: "line",
+            lineUserID: "1234",
+            lineChannelAccessToken: "token"
+        };
+        let msg = "PassedInMessage";
+
+        let res = await notif.send(notificationConf, msg, null, null);
+
+        expect(axios.post).toHaveBeenCalledWith("https://api.line.me/v2/bot/message/push", {
+            messages: [
+                {
+                    text: "Test Successful!",
+                    type: "text",
+                },
+            ],
+            to: "1234",
+        }, {
+            headers: {
+                "Authorization": "Bearer token",
+                "Content-Type": "application/json",
+            },
+        });
+        expect(res).toBe("Sent Successfully.");
+    });
+
+});
+
+describe("notification to act properly on error", () => {
+    it("should respond with an axios error on error", async () => {
+
+        axios.post.mockImplementation(() => {
+            throw new Error("Test Error");
+        });
+
+        let notificationConf = {
+            type: "line",
+            lineUserID: "1234",
+            lineChannelAccessToken: "token"
+        };
+        let msg = "PassedInMessage";
+        let notif = new Line();
+
+        try {
+            await notif.send(notificationConf, msg, null, null);
+            expect("Error thrown").toBe(false);
+        } catch (e) {
+            expect(e.message).toBe("Error: Error: Test Error ");
+        }
+
+        expect(axios.post).toHaveBeenCalledWith("https://api.line.me/v2/bot/message/push", {
+            messages: [
+                {
+                    text: "Test Successful!",
+                    type: "text",
+                },
+            ],
+            to: "1234",
+        }, {
+            headers: {
+                "Authorization": "Bearer token",
+                "Content-Type": "application/json",
+            },
+        });
+    });
+
+});
+
+describe("notification to get proper data from Notification.send", () => {
+    it("should call axios with proper data", async () => {
+        let response = {
+            data: {
+                Message: "OK"
+            }
+        };
+        axios.post.mockResolvedValueOnce(response);
+        let notificationConf = {
+            type: "line",
+            lineUserID: "1234",
+            lineChannelAccessToken: "token"
+        };
+        let monitorConf = {
+            type: "http",
+            url: "https://www.google.com",
+            name: "testing",
+        };
+        let heartbeatConf = {
+            status: UP,
+            msg: "some message",
+            time: "example time",
+        };
+
+        NotificationSend.Notification.init();
+        let res = await NotificationSend.Notification.send(notificationConf, "PassedInMessage", monitorConf, heartbeatConf);
+        expect(axios.post).toHaveBeenCalledWith("https://api.line.me/v2/bot/message/push", {
+            messages: [
+                {
+                    text: "UptimeKuma Alert: [✅ Up]\nName: testing\nsome message\nTime (UTC): example time",
+                    type: "text",
+                },
+            ],
+            to: "1234",
+        }, {
+            headers: {
+                "Authorization": "Bearer token",
+                "Content-Type": "application/json",
+            },
+        });
+        expect(res).toBe("Sent Successfully.");
+    });
+
+});