getRowForX method

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

diff --git a/auto_tests/tests/data_api.js b/auto_tests/tests/data_api.js
new file mode 100644 (file)
index 0000000..f3180f5
--- /dev/null
+++ b/auto_tests/tests/data_api.js
@@ -0,0 +1,99 @@
+/**
+ * @fileoverview Tests for data access methods.
+ *
+ * @author danvdk@gmail.com (Dan Vanderkam)
+ */
+var dataApiTestCase = TestCase("data-api");
+
+dataApiTestCase.prototype.setUp = function() {
+  document.body.innerHTML = "<div id='graph'></div>";
+  this.opts = {
+    width: 480,
+    height: 320
+  };
+
+  this.graphDiv = document.getElementById("graph");
+};
+
+dataApiTestCase.prototype.tearDown = function() {
+};
+
+dataApiTestCase.prototype.testBasicAccessors = function() {
+  var g = new Dygraph(this.graphDiv, temperature_data, this.opts);
+
+  assertEquals(365, g.numRows());
+  assertEquals(3, g.numColumns());
+
+  // 2007-01-01,62,39
+  assertEquals(62, g.getValue(0, 1));
+  assertEquals(39, g.getValue(0, 2));
+
+  // 2007-12-31,57,42
+  assertEquals(57, g.getValue(364, 1));
+  assertEquals(42, g.getValue(364, 2));
+};
+
+
+dataApiTestCase.prototype.testAccessorsCustomBars = function() {
+  var g = new Dygraph(this.graphDiv, data_temp_high_low, {
+    customBars: true
+  });
+
+  assertEquals(1070, g.numRows());
+  assertEquals(3, g.numColumns());
+
+  // 2007-01-01,46;51;56,43;45;48
+  assertEquals([46, 51, 56], g.getValue(0, 1));
+  assertEquals([43, 45, 48], g.getValue(0, 2));
+
+  // 2009-12-05,37;42;47  (i.e. missing second column)
+  assertEquals([37, 42, 47], g.getValue(1069, 1));
+  assertEquals([null, null, null], g.getValue(1069, 2));
+};
+
+
+// Regression test for #554.
+dataApiTestCase.prototype.testGetRowForX = function() {
+  var g = new Dygraph(this.graphDiv, [
+    "x,y",
+    "1,2",
+    "3,4",
+    "5,6",
+    "7,8",
+    "9,10"
+  ].join('\n'), this.opts);
+
+  assertEquals(null, g.getRowForX(0));
+  assertEquals(0, g.getRowForX(1));
+  assertEquals(null, g.getRowForX(2));
+  assertEquals(1, g.getRowForX(3));
+  assertEquals(null, g.getRowForX(4));
+  assertEquals(2, g.getRowForX(5));
+  assertEquals(null, g.getRowForX(6));
+  assertEquals(3, g.getRowForX(7));
+  assertEquals(null, g.getRowForX(8));
+  assertEquals(4, g.getRowForX(9));
+  assertEquals(null, g.getRowForX(10));
+};
+
+// If there are rows with identical x-values, getRowForX promises that it will
+// return the first one.
+dataApiTestCase.prototype.testGetRowForXDuplicates = function() {
+  var g = new Dygraph(this.graphDiv, [
+    "x,y",
+    "1,2",  // 0
+    "1,4",  // 1
+    "1,6",  // 2
+    "1,8",  // 3
+    "1,6",  // 4
+    "9,2",  // 5
+    "9,4",
+    "9,6",
+    "9,8",
+    "9,10"
+  ].join('\n'), this.opts);
+
+  assertEquals(0, g.getRowForX(1));
+  assertEquals(null, g.getRowForX(2));
+  assertEquals(5, g.getRowForX(9));
+};