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test/unit/svg_factory_spec.js

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+/* Copyright 2017 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { DOMSVGFactory } from "../../src/display/svg_factory.js";
+import { isNodeJS } from "../../src/shared/util.js";
+
+describe("svg_factory", function () {
+  describe("DOMSVGFactory", function () {
+    let svgFactory;
+
+    beforeAll(function () {
+      svgFactory = new DOMSVGFactory();
+    });
+
+    afterAll(function () {
+      svgFactory = null;
+    });
+
+    it("`create` should throw an error if the dimensions are invalid", function () {
+      // Invalid width.
+      expect(function () {
+        return svgFactory.create(-1, 0);
+      }).toThrow(new Error("Invalid SVG dimensions"));
+
+      // Invalid height.
+      expect(function () {
+        return svgFactory.create(0, -1);
+      }).toThrow(new Error("Invalid SVG dimensions"));
+    });
+
+    it("`create` should return an SVG element if the dimensions are valid", function () {
+      if (isNodeJS) {
+        pending("Document is not supported in Node.js.");
+      }
+
+      const svg = svgFactory.create(20, 40);
+      expect(svg instanceof SVGSVGElement).toBe(true);
+      expect(svg.getAttribute("version")).toBe("1.1");
+      expect(svg.getAttribute("width")).toBe("20px");
+      expect(svg.getAttribute("height")).toBe("40px");
+      expect(svg.getAttribute("preserveAspectRatio")).toBe("none");
+      expect(svg.getAttribute("viewBox")).toBe("0 0 20 40");
+    });
+
+    it("`createElement` should throw an error if the type is not a string", function () {
+      expect(function () {
+        return svgFactory.createElement(true);
+      }).toThrow(new Error("Invalid SVG element type"));
+    });
+
+    it("`createElement` should return an SVG element if the type is valid", function () {
+      if (isNodeJS) {
+        pending("Document is not supported in Node.js.");
+      }
+
+      const svg = svgFactory.createElement("svg:rect");
+      expect(svg instanceof SVGRectElement).toBe(true);
+    });
+  });
+});