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108 lines
3.4 KiB
108 lines
3.4 KiB
/// <reference types="cypress" />
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context("Querying", () => {
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beforeEach(() => {
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cy.visit("https://example.cypress.io/commands/querying")
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})
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// The most commonly used query is 'cy.get()', you can
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// think of this like the '$' in jQuery
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it("cy.get() - query DOM elements", () => {
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// https://on.cypress.io/get
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cy.get("#query-btn").should("contain", "Button")
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cy.get(".query-btn").should("contain", "Button")
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cy.get("#querying .well>button:first").should("contain", "Button")
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// ↲
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// Use CSS selectors just like jQuery
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cy.get('[data-test-id="test-example"]').should("have.class", "example")
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// 'cy.get()' yields jQuery object, you can get its attribute
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// by invoking `.attr()` method
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cy.get('[data-test-id="test-example"]')
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.invoke("attr", "data-test-id")
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.should("equal", "test-example")
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// or you can get element's CSS property
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cy.get('[data-test-id="test-example"]')
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.invoke("css", "position")
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.should("equal", "static")
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// or use assertions directly during 'cy.get()'
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// https://on.cypress.io/assertions
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cy.get('[data-test-id="test-example"]')
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.should("have.attr", "data-test-id", "test-example")
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.and("have.css", "position", "static")
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})
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it("cy.contains() - query DOM elements with matching content", () => {
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// https://on.cypress.io/contains
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cy.get(".query-list").contains("bananas").should("have.class", "third")
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// we can pass a regexp to `.contains()`
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cy.get(".query-list").contains(/^b\w+/).should("have.class", "third")
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cy.get(".query-list").contains("apples").should("have.class", "first")
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// passing a selector to contains will
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// yield the selector containing the text
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cy.get("#querying")
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.contains("ul", "oranges")
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.should("have.class", "query-list")
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cy.get(".query-button")
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.contains("Save Form")
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.should("have.class", "btn")
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})
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it(".within() - query DOM elements within a specific element", () => {
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// https://on.cypress.io/within
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cy.get(".query-form").within(() => {
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cy.get("input:first").should("have.attr", "placeholder", "Email")
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cy.get("input:last").should("have.attr", "placeholder", "Password")
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})
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})
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it("cy.root() - query the root DOM element", () => {
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// https://on.cypress.io/root
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// By default, root is the document
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cy.root().should("match", "html")
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cy.get(".query-ul").within(() => {
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// In this within, the root is now the ul DOM element
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cy.root().should("have.class", "query-ul")
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})
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})
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it("best practices - selecting elements", () => {
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// https://on.cypress.io/best-practices#Selecting-Elements
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cy.get("[data-cy=best-practices-selecting-elements]").within(() => {
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// Worst - too generic, no context
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cy.get("button").click()
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// Bad. Coupled to styling. Highly subject to change.
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cy.get(".btn.btn-large").click()
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// Average. Coupled to the `name` attribute which has HTML semantics.
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cy.get("[name=submission]").click()
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// Better. But still coupled to styling or JS event listeners.
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cy.get("#main").click()
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// Slightly better. Uses an ID but also ensures the element
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// has an ARIA role attribute
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cy.get("#main[role=button]").click()
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// Much better. But still coupled to text content that may change.
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cy.contains("Submit").click()
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// Best. Insulated from all changes.
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cy.get("[data-cy=submit]").click()
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})
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})
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})
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