expect(function() {
doc.transform('testTransformation');
}).to.throw(Error);
expect(doc.testMethod).to.be.undefined;
expect(elementNode.testMethod).to.be.undefined;
expect(textNode.testMethod).to.be.undefined;
expect(function() {
doc.transform('testTransformation');
}).to.throw(Error);
expect(doc.testMethod).to.be.undefined;
expect(elementNode.testMethod).to.be.undefined;
expect(textNode.testMethod).to.be.undefined;
expect(elementNode.testMethod().sameNode(elementNode)).to.equal(true, 'context is set to a node instance');
expect(textNode.testMethod().sameNode(textNode)).to.equal(true, 'context is set to a node instance');
});
expect(elementNode.testMethod().sameNode(elementNode)).to.equal(true, 'context is set to a node instance');
expect(textNode.testMethod().sameNode(textNode)).to.equal(true, 'context is set to a node instance');
});