add test/simple-nodes-names-equal-to-javascript-object-properties.js

test/simple-nodes-names-equal-to-javascript-object-properties.js

@@ -0,0 +1,28 @@
+import assert from "assert";
+import it from "./it.js";
+import jsdom from "./jsdom.js";
+import * as d3 from "d3-selection";
+import * as d3_graphviz from "../index.js";
+
+it("Simple rendering an SVG from graphviz DOT.", async () => {
+    var window = global.window = jsdom('<div id="graph"></div>');
+    global.document = window.document;
+
+    var graphviz;
+
+    await new Promise(resolve => {
+        graphviz = d3_graphviz.graphviz("#graph")
+            .growEnteringEdges(true)
+            .onerror(e => {
+                console.log("graphviz.renderDot error:", e);
+               resolve(false);
+             })
+            .renderDot('digraph {constructor -> toString}', resolve);
+    });
+
+    assert.equal(d3.selectAll('.node').size(), 2, 'Number of nodes');
+    assert.equal(d3.selectAll('.edge').size(), 1, 'Number of edges');
+    assert.equal(d3.selectAll('ellipse').size(), 2, 'Number of ellipses');
+    assert.equal(d3.selectAll('polygon').size(), 2, 'Number of polygons');
+    assert.equal(d3.selectAll('path').size(), 1, 'Number of paths');
+});