1 files changed, 82 insertions, 0 deletions
diff --git a/spec/javascripts/blob/pdf/index_spec.js b/spec/javascripts/blob/pdf/index_spec.js
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index 00000000000..bbeaf95e68d
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+++ b/spec/javascripts/blob/pdf/index_spec.js
@@ -0,0 +1,82 @@
+/* eslint-disable import/no-unresolved */
+
+import renderPDF from '~/blob/pdf';
+import testPDF from '../../fixtures/blob/pdf/test.pdf';
+
+describe('PDF renderer', () => {
+  let viewer;
+  let app;
+
+  const checkLoaded = (done) => {
+    if (app.loading) {
+      setTimeout(() => {
+        checkLoaded(done);
+      }, 100);
+    } else {
+      done();
+    }
+  };
+
+  preloadFixtures('static/pdf_viewer.html.raw');
+
+  beforeEach(() => {
+    loadFixtures('static/pdf_viewer.html.raw');
+    viewer = document.getElementById('js-pdf-viewer');
+    viewer.dataset.endpoint = testPDF;
+  });
+
+  it('shows loading icon', () => {
+    renderPDF();
+
+    expect(
+      document.querySelector('.loading'),
+    ).not.toBeNull();
+  });
+
+  describe('successful response', () => {
+    beforeEach((done) => {
+      app = renderPDF();
+
+      checkLoaded(done);
+    });
+
+    it('does not show loading icon', () => {
+      expect(
+        document.querySelector('.loading'),
+      ).toBeNull();
+    });
+
+    it('renders the PDF', () => {
+      expect(
+        document.querySelector('.pdf-viewer'),
+      ).not.toBeNull();
+    });
+
+    it('renders the PDF page', () => {
+      expect(
+        document.querySelector('.pdf-page'),
+      ).not.toBeNull();
+    });
+  });
+
+  describe('error getting file', () => {
+    beforeEach((done) => {
+      viewer.dataset.endpoint = 'invalid/path/to/file.pdf';
+      app = renderPDF();
+
+      checkLoaded(done);
+    });
+
+    it('does not show loading icon', () => {
+      expect(
+        document.querySelector('.loading'),
+      ).toBeNull();
+    });
+
+    it('shows error message', () => {
+      expect(
+        document.querySelector('.md').textContent.trim(),
+      ).toBe('An error occured whilst loading the file. Please try again later.');
+    });
+  });
+});