Added tests for Runner invokeBranch

Author: MitMaro

src/Runtime.js

@@ -90,7 +90,9 @@ class Runner {
 			else if (statement.type === PARSER_TYPE_BRANCH) {
 				this.invokeBranch(statement);
 			}
-			throw new RuntimeError(`Unexpected statement: ${statement}`);
+			else {
+				throw new RuntimeError(`Unexpected statement: ${statement}`);
+			}
 		}
 	}
 

test/Runtime/Runtime.invokeBranch.spec.js

@@ -0,0 +1,43 @@
+'use strict';
+
+const expect = require('chai').expect;
+const Runtime = require('../../src/Runtime');
+const nb = require('../nodeBuilder');
+
+describe('Runtime.invokeBranch', function() {
+	let runtime;
+
+	beforeEach(function() {
+		runtime = new Runtime();
+	});
+
+	it('should invoke on true condition', function() {
+		runtime.invokeBranch(
+			nb.branch([
+				nb.conditional(nb.value(false), nb.root(nb.literal('aaa'))),
+				nb.conditional(nb.value(true), nb.root(nb.literal('bbb')))
+			])
+		);
+		expect(runtime.result).to.deep.equal([ 'bbb' ]);
+	});
+
+	it('should invoke else', function() {
+		runtime.invokeBranch(
+			nb.branch([
+				nb.conditional(nb.value(false), nb.root(nb.literal('aaa'))),
+				nb.constantConditional(nb.root(nb.literal('bbb')))
+			])
+		);
+		expect(runtime.result).to.deep.equal([ 'bbb' ]);
+	});
+
+
+	it('should not invoke on false condition', function() {
+		runtime.invokeBranch(
+			nb.branch(
+				nb.conditional(nb.value(false), nb.root(nb.literal('foo')))
+			)
+		);
+		expect(runtime.result).to.deep.equal([]);
+	});
+});