diff --git a/.gitignore b/.gitignore
index a1066ba..d25d98f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+ignore
+
# Created by https://www.toptal.com/developers/gitignore/api/vscode,node,intellij
# Edit at https://www.toptal.com/developers/gitignore?templates=vscode,node,intellij
diff --git a/cypress.json b/cypress.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/cypress.json
@@ -0,0 +1 @@
+{}
diff --git a/cypress/fixtures/example.json b/cypress/fixtures/example.json
new file mode 100644
index 0000000..02e4254
--- /dev/null
+++ b/cypress/fixtures/example.json
@@ -0,0 +1,5 @@
+{
+ "name": "Using fixtures to represent data",
+ "email": "hello@cypress.io",
+ "body": "Fixtures are a great way to mock data for responses to routes"
+}
diff --git a/cypress/integration/calculator.spec.js b/cypress/integration/calculator.spec.js
new file mode 100644
index 0000000..f65ce13
--- /dev/null
+++ b/cypress/integration/calculator.spec.js
@@ -0,0 +1,85 @@
+it("숫자를 클릭할 수 있어야 한다.", () => {
+ cy.visit("index.html");
+
+ cy.get(".digit").contains("1").click();
+ cy.get(".digit").contains("2").click();
+ cy.get(".digit").contains("3").click();
+
+ cy.get("#total").should("have.text", "123");
+});
+
+it("2개의 숫자에 대해 덧셈이 가능하다.", () => {
+ cy.visit("index.html");
+
+ cy.get(".digit").contains("2").click();
+ cy.get(".operation").contains("+").click();
+ cy.get(".digit").contains("9").click();
+
+ cy.get(".operation").contains("=").click();
+ cy.get("#total").should("have.text", "11");
+});
+
+it("2개의 숫자에 대해 뺄셈이 가능하다.", () => {
+ cy.visit("index.html");
+
+ cy.get(".digit").contains("2").click();
+ cy.get(".operation").contains("-").click();
+ cy.get(".digit").contains("9").click();
+
+ cy.get(".operation").contains("=").click();
+ cy.get("#total").should("have.text", "-7");
+});
+
+it("2개의 숫자에 대해 곱셈이 가능하다.", () => {
+ cy.visit("index.html");
+
+ cy.get(".digit").contains("2").click();
+ cy.get(".operation").contains("X").click();
+ cy.get(".digit").contains("9").click();
+
+ cy.get(".operation").contains("=").click();
+ cy.get("#total").should("have.text", "18");
+});
+
+it("2개의 숫자에 대해 나눗셈이 가능하다.", () => {
+ cy.visit("index.html");
+
+ cy.get(".digit").contains("8").click();
+ cy.get(".operation").contains("/").click();
+ cy.get(".digit").contains("2").click();
+
+ cy.get(".operation").contains("=").click();
+ cy.get("#total").should("have.text", "4");
+});
+
+it("AC(All Clear)버튼을 누르면 0으로 초기화 한다.", () => {
+ cy.visit("index.html");
+
+ cy.get(".digit").contains("1").click();
+ cy.get(".digit").contains("2").click();
+ cy.get(".modifier").click();
+
+ cy.get("#total").should("have.text", "0");
+});
+
+it("숫자는 한번에 최대 3자리 수까지 입력 가능하다.", () => {
+ cy.visit("index.html");
+
+ cy.get(".digit").contains("9").click();
+ cy.get(".digit").contains("9").click();
+ cy.get(".digit").contains("9").click();
+ cy.get(".digit").contains("9").click();
+
+ cy.get("#total").should("have.text", "999");
+});
+
+it("계산 결과를 표현할 때 소수점 이하는 버림한다.", () => {
+ cy.visit("index.html");
+
+ cy.get(".digit").contains("5").click();
+ cy.get(".operation").contains("/").click();
+ cy.get(".digit").contains("3").click();
+ cy.get(".operation").contains("=").click();
+
+ cy.get("#total").should("have.text", "1");
+});
diff --git a/cypress/plugins/index.js b/cypress/plugins/index.js
new file mode 100644
index 0000000..59b2bab
--- /dev/null
+++ b/cypress/plugins/index.js
@@ -0,0 +1,22 @@
+///
+// ***********************************************************
+// This example plugins/index.js can be used to load plugins
+//
+// You can change the location of this file or turn off loading
+// the plugins file with the 'pluginsFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/plugins-guide
+// ***********************************************************
+
+// This function is called when a project is opened or re-opened (e.g. due to
+// the project's config changing)
+
+/**
+ * @type {Cypress.PluginConfig}
+ */
+// eslint-disable-next-line no-unused-vars
+module.exports = (on, config) => {
+ // `on` is used to hook into various events Cypress emits
+ // `config` is the resolved Cypress config
+}
diff --git a/cypress/support/commands.js b/cypress/support/commands.js
new file mode 100644
index 0000000..119ab03
--- /dev/null
+++ b/cypress/support/commands.js
@@ -0,0 +1,25 @@
+// ***********************************************
+// This example commands.js shows you how to
+// create various custom commands and overwrite
+// existing commands.
+//
+// For more comprehensive examples of custom
+// commands please read more here:
+// https://on.cypress.io/custom-commands
+// ***********************************************
+//
+//
+// -- This is a parent command --
+// Cypress.Commands.add('login', (email, password) => { ... })
+//
+//
+// -- This is a child command --
+// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
+//
+//
+// -- This is a dual command --
+// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
+//
+//
+// -- This will overwrite an existing command --
+// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })
diff --git a/cypress/support/index.js b/cypress/support/index.js
new file mode 100644
index 0000000..d68db96
--- /dev/null
+++ b/cypress/support/index.js
@@ -0,0 +1,20 @@
+// ***********************************************************
+// This example support/index.js is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+// Import commands.js using ES2015 syntax:
+import './commands'
+
+// Alternatively you can use CommonJS syntax:
+// require('./commands')
diff --git a/index.html b/index.html
index 8bf48ab..2916d9d 100644
--- a/index.html
+++ b/index.html
@@ -34,5 +34,6 @@ 0
+