auto_tests for XHRs (#786)

[dygraphs.git] / auto_tests / tests / xhr.js

diff --git a/auto_tests/tests/xhr.js b/auto_tests/tests/xhr.js
new file mode 100644 (file)
index 0000000..90712fa
--- /dev/null
+++ b/auto_tests/tests/xhr.js
@@ -0,0 +1,66 @@
+/**
+ * @fileoverview Tests involving issuing XHRs for data.
+ *
+ * Note that these tests must be run with an HTTP server.
+ * XHRs can't be issued from file:/// URLs.
+ * This can be done with
+ *
+ *     npm install http-server
+ *     http-server
+ *     open http://localhost:8080/auto_tests/runner.html
+ *
+ */
+
+import Dygraph from '../../src/dygraph';
+import Util from './Util';
+
+function dygraphPromise(div, data, opts) {
+  return new Promise((resolve, reject) => {
+    const g = new Dygraph(div, data, opts);
+    g.ready(() => resolve(g));
+  });
+}
+
+describe("xhr", () => {
+
+it('should issue XHRs for CSV data', () => {
+  return dygraphPromise('graph', 'data/sample.csv').then(g => {
+    assert.isNotNull(g);
+    assert.equal(g.numRows(), 4);
+    assert.equal(g.numColumns(), 3);
+  });
+});
+
+it('should warn on out-of-order CSV data', () => {
+  const calls = {};
+  const restore = Util.captureConsole(calls);
+  return dygraphPromise('graph', 'data/out-of-order.csv').then(g => {
+    restore();
+    assert.isNotNull(g);
+    assert.equal(g.numRows(), 4);
+    assert.equal(g.numColumns(), 3);
+    assert.equal(calls.warn.length, 1);
+    assert(/out of order/.exec(calls.warn[0]));
+  }, e => {
+    restore();
+    return Promise.reject(e);
+  });
+});
+
+it('should warn on out-of-order CSV data with dates', () => {
+  const calls = {};
+  const restore = Util.captureConsole(calls);
+  return dygraphPromise('graph', 'data/out-of-order-dates.csv').then(g => {
+    restore();
+    assert.isNotNull(g);
+    assert.equal(g.numRows(), 8);
+    assert.equal(g.numColumns(), 5);
+    assert.equal(calls.warn.length, 1);
+    assert(/out of order/.exec(calls.warn[0]));
+  }, e => {
+    restore();
+    return Promise.reject(e);
+  });
+});
+
+});