mungedb-aggregate/test/lib/pipeline/matcher/ElemMatchValueMatchExpression_test.js

"use strict";
if (!module.parent) return require.cache[__filename] = 0, (new(require("mocha"))()).addFile(__filename).ui("exports").run(process.exit);
var assert = require("assert"),
	ErrorCodes = require("../../../../lib/Errors").ErrorCodes,
	ElemMatchObjectMatchExpression = require("../../../../lib/pipeline/matcher/ElemMatchObjectMatchExpression.js"),
	ElemMatchValueMatchExpression = require("../../../../lib/pipeline/matcher/ElemMatchValueMatchExpression.js"),
	MatchDetails = require("../../../../lib/pipeline/matcher/MatchDetails.js"),
	LTMatchExpression = require("../../../../lib/pipeline/matcher/LTMatchExpression.js"),
	GTMatchExpression = require("../../../../lib/pipeline/matcher/GTMatchExpression.js");


module.exports = {
	"ElemMatchValueMatchExpression": {
		"Should match a single element": function() {
			var baseOperand={"$gt":5},
				match={"a":[6]},
				notMatch={"a":[4]},
				gt = new GTMatchExpression(),
				op = new ElemMatchValueMatchExpression();

			assert.strictEqual(gt.init("", baseOperand.$gt).code, ErrorCodes.OK);
			assert.strictEqual(op.init("a", gt).code, ErrorCodes.OK);
			assert.ok(op.matchesSingleElement(match.a));
			assert.ok(!op.matchesSingleElement(notMatch.a));
		},

		"Should match multiple elements": function() {
			var baseOperand1={"$gt":1},
				baseOperand2={"$lt":10},
				notMatch1={"a":[0,1]},
				notMatch2={"a":[10,11]},
				match={"a":[0,5,11]},
				gt = new GTMatchExpression(),
				lt = new LTMatchExpression(),
				op = new ElemMatchValueMatchExpression();

			assert.strictEqual(gt.init("", baseOperand1.$gt).code, ErrorCodes.OK);
			assert.strictEqual(lt.init("", baseOperand2.$lt).code, ErrorCodes.OK);

			assert.strictEqual(op.init("a").code, ErrorCodes.OK);
			op.add(gt);
			op.add(lt);

			assert.ok(!op.matchesSingleElement(notMatch1.a));
			assert.ok(!op.matchesSingleElement(notMatch2.a));
			assert.ok(op.matchesSingleElement(match.a));
		},

		"Should match a non array": function() {
			var baseOperand={"$gt":5},
				gt = new GTMatchExpression(),
				op = new ElemMatchObjectMatchExpression();

			assert.strictEqual(gt.init("", baseOperand.$gt).code, ErrorCodes.OK);
			assert.strictEqual(op.init("a", gt).code, ErrorCodes.OK);
			// Directly nested objects are not matched with $elemMatch.  An intervening array is
			// required.
			assert.ok(!op.matches({"a":6},null));
			assert.ok(!op.matches({"a":{"0":6}},null));
		},

		"Should match an array scalar": function() {
			var baseOperand={"$gt":5},
				gt = new GTMatchExpression(),
				op = new ElemMatchValueMatchExpression();

			assert.strictEqual(gt.init("", baseOperand.$gt).code, ErrorCodes.OK);
			assert.strictEqual(op.init("a", gt).code, ErrorCodes.OK);
			assert.ok(op.matches({"a":[6]},null));
			assert.ok(op.matches({"a":[4,6]},null));
			assert.ok(op.matches({"a":[{},7]},null));
		},

		"Should match multiple named values": function() {
			var baseOperand={"$gt":5},
				gt = new GTMatchExpression(),
				op = new ElemMatchValueMatchExpression();

			assert.strictEqual(gt.init("", baseOperand.$gt).code, ErrorCodes.OK);
			assert.strictEqual(op.init("a.b", gt).code, ErrorCodes.OK);
			assert.ok(op.matches({"a":[{"b":[6]}]}, null));
			assert.ok(op.matches({"a":[{"b":[4]}, {"b":[4,6]}]}, null));
		},

		"ElemMatchKey should return the appropriate values": function() {
			var baseOperand={"$gt":6},
				gt = new GTMatchExpression(),
				op = new ElemMatchValueMatchExpression(),
				details = new MatchDetails();

			assert.strictEqual(gt.init("", baseOperand.$gt).code, ErrorCodes.OK);
			assert.strictEqual(op.init("a.b", gt).code, ErrorCodes.OK);
			details.requestElemMatchKey();
			assert.ok(!op.matches({}, details));
			assert.ok(!details.hasElemMatchKey());
			assert.ok(!op.matches({"a":{"b":[2]}}, details));
			assert.ok(!details.hasElemMatchKey());
			assert.ok(op.matches({"a":{"b":[3,7]}}, details));
			assert.ok(details.hasElemMatchKey());
			// The entry within the $elemMatch array is reported.
			assert.strictEqual("1", details.elemMatchKey());
			assert.ok(op.matches({"a":[1, 2, {"b":[3,7]}]}, details));
			assert.ok(details.hasElemMatchKey());
			// The entry within a parent of the $elemMatch array is reported.
			assert.strictEqual("2", details.elemMatchKey());
		}
	}
};