Replaced tests with jest

test/parse-query-tree.test.js

@@ -0,0 +1,107 @@
+const buildTypeGraph = require('../source/build-type-graph');
+const parseInput = require('../source/parse-input');
+const parseQueryTree = require('../source/parse-query-tree');
+
+//schemas
+const simpleSchema = `
+
+scalar Date
+
+type Book {
+	unique String title
+	Date published
+	Float rating
+}
+
+type Author {
+	unique String name
+	Book books
+}
+
+`;
+
+const simpleQuery = `
+
+Author {
+	name
+	books {
+		title
+		published
+	}
+}
+
+`;
+
+const badTypeQuery = `
+
+Company {
+	author {
+		name
+	}
+}
+
+`;
+
+const badFieldQuery = `
+
+Author {
+	name
+	address
+}
+
+`;
+
+//prepare for querying the database
+test('parseQueryTree - simple query', () => {
+	//setup
+	const tokens = parseInput(simpleQuery, true);
+	const graph = buildTypeGraph(simpleSchema);
+
+	//process
+	const queryTree = parseQueryTree(tokens, graph);
+
+	//inspect
+	expect(queryTree.typeName).toEqual('Author');
+	expect(queryTree.name.typeName).toEqual('String');
+
+	expect(queryTree.books.typeName).toEqual('Book');
+	expect(queryTree.books.title.typeName).toEqual('String');
+	expect(queryTree.books.published.typeName).toEqual('Date');
+});
+
+test('parseQueryTree - bad type query', () => {
+	//setup
+	const tokens = parseInput(badTypeQuery, true);
+	const graph = buildTypeGraph(simpleSchema);
+
+	//process
+	const f = () => parseQueryTree(tokens, graph);
+
+	//inspect
+	expect(f).toThrow("Expected a type in the type graph (found Company)");
+});
+
+test('parseQueryTree - bad field query', () => {
+	//setup
+	const tokens = parseInput(badFieldQuery, true);
+	const graph = buildTypeGraph(simpleSchema);
+
+	//process
+	const f = () => parseQueryTree(tokens, graph);
+
+	//inspect
+	expect(f).toThrow("Unexpected field name address in type Author");
+});
+
+test('parseQueryTree - check for unique field', () => {
+	//setup
+	const tokens = parseInput(simpleQuery, true);
+	const graph = buildTypeGraph(simpleSchema);
+		
+	//process
+	const queryTree = parseQueryTree(tokens, graph);
+
+	//inspect
+	expect(queryTree.name.unique).toEqual(true); //a bit useless here, but good none the less
+});
+