Added Runtime evaluateExpression tests

Author: MitMaro

test/Runtime/Runtime.evaluateExpression.spec.js

@@ -0,0 +1,31 @@
+'use strict';
+
+const expect = require('chai').expect;
+const Runtime = require('../../src/Runtime');
+const nb = require('../nodeBuilder');
+
+const runtime = new Runtime();
+
+runtime.input = { foo: 'bar' };
+
+describe('Runtime.evaluateExpression', function() {
+	it('should return on binary operator', function() {
+		expect(runtime.evaluateExpression(nb.andConditional(nb.value(true), nb.value(false)))).to.be.false;
+	});
+
+	it('should return on unary operator', function() {
+		expect(runtime.evaluateExpression(nb.notConditional(nb.value(true)))).to.be.false;
+	});
+
+	it('should return on value expression', function() {
+		expect(runtime.evaluateExpression(nb.value('foo'))).to.equal('foo');
+	});
+
+	it('should return on value expression', function() {
+		expect(runtime.evaluateExpression(nb.variable('foo'))).to.equal('bar');
+	});
+
+	it('should error on unknown expression', function() {
+		expect(() => runtime.evaluateExpression(nb.invalidExpression())).to.throw(/Unknown expression type:/);
+	});
+});