Add test for transition.selectAll.

test/core/transition-test-selectAll.js

@@ -0,0 +1,48 @@
+require("../env");
+require("../../d3");
+
+var assert = require("assert");
+
+module.exports = {
+  topic: function() {
+    var s = d3.select("body").append("div").selectAll("div")
+        .data(["one", "two", "three", "four"])
+      .enter().append("div")
+        .attr("class", String);
+
+    s.filter(function(d, i) { return i > 0; }).append("span");
+    s.filter(function(d, i) { return i > 1; }).append("span");
+    s[0][3] = null;
+
+    return s.transition()
+        .delay(function(d, i) { return i * 13; })
+        .duration(function(d, i) { return i * 21; });
+  },
+
+  "selects all matching elements": function(transition) {
+    var t = transition.selectAll("span");
+    assert.domEqual(t[1][0].node.parentNode, transition[0][1].node);
+    assert.domEqual(t[2][0].node.parentNode, transition[0][2].node);
+    assert.domEqual(t[2][1].node.parentNode, transition[0][2].node);
+  },
+  "ignores null elements": function(transition) {
+    var t = transition.selectAll("span");
+    assert.equal(t.length, 3);
+  },
+  "propagates delay to the selected elements": function(transition) {
+    var t = transition.selectAll("span");
+    assert.domEqual(t[1][0].delay, 13);
+    assert.domEqual(t[2][0].delay, 26);
+    assert.domEqual(t[2][1].delay, 26);
+  },
+  "propagates duration to the selected elements": function(transition) {
+    var t = transition.selectAll("span");
+    assert.domEqual(t[1][0].duration, 21);
+    assert.domEqual(t[2][0].duration, 42);
+    assert.domEqual(t[2][1].duration, 42);
+  },
+  "returns empty if no match is found": function(transition) {
+    var t = transition.selectAll("span");
+    assert.isEmpty(t[0]);
+  }
+};

test/core/transition-test.js

@@ -26,7 +26,7 @@ suite.addBatch({
 
   // Subtransitions
   "select": require("./transition-test-select"),
-  // selectAll
+  "selectAll": require("./transition-test-selectAll"),
 
   // Content
   "attr": require("./transition-test-attr"),