test: add end to end tests (#19)

In addition to Jest tests, I configure Cypress to test some pages and features.
I also fix some Jest errors due to images import.

1 files changed, 44 insertions, 0 deletions

diff --git a/tests/cypress/e2e/pages/blog.cy.ts b/tests/cypress/e2e/pages/blog.cy.ts
new file mode 100644
index 0000000..dedc0e4
--- /dev/null
+++ b/tests/cypress/e2e/pages/blog.cy.ts
@@ -0,0 +1,44 @@
+import { settings } from '@utils/config';
+
+describe('Blog Page', () => {
+  beforeEach(() => {
+    cy.visit('/blog');
+  });
+
+  it('loads the correct number of pages', () => {
+    cy.findByText(/(\d+) articles chargés sur un total de (\d+)/i)
+      .then(($div) => {
+        type ArticlesGroup = {
+          first: string;
+          total: string;
+        };
+
+        const firstLastNumbers = /(?<first>\d+).*[\D](?<total>\d+)/;
+        const result = $div.text().match(firstLastNumbers);
+        expect(result).to.not.be.null;
+
+        const { first, total } = result!.groups as ArticlesGroup;
+        const firstArticles = parseInt(first, 10);
+        const totalArticles = parseInt(total, 10);
+        expect(firstArticles).to.be.within(1, settings.postsPerPage);
+        expect(totalArticles).to.be.at.least(1);
+
+        const totalPages = Math.ceil(totalArticles / settings.postsPerPage);
+        const remainingPages = totalPages - 1;
+        return Array.from({ length: remainingPages }, (_, i) => i + 1);
+      })
+      .then((remainingPages) => {
+        if (remainingPages.length >= 1) {
+          cy.wrap(remainingPages).each(() => {
+            cy.findByRole('button', {
+              name: /Charger plus d’articles/i,
+            }).click();
+          });
+        }
+
+        cy.findByRole('button', { name: /Charger plus d’articles/i }).should(
+          'not.exist'
+        );
+      });
+  });
+});