mungedb-aggregate/test/lib/pipeline/matcher/InMatchExpression_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,
	MatchDetails = require("../../../../lib/pipeline/matcher/MatchDetails"),
	InMatchExpression = require("../../../../lib/pipeline/matcher/InMatchExpression"),
	// TODO: replace the following with a real BSONTypes at some point
	MinKey = new (function MinKey(){/*matcher does weird stuff with empty objects*/this.foo = "bar";})(), // jshint ignore:line
	MaxKey = new (function MaxKey(){/*matcher does weird stuff with empty objects*/this.foo = "bar";})(); // jshint ignore:line


module.exports = {
	"InMatchExpression": {
		"should match a single element": function (){
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			e.getArrayFilterEntries().addEquality(1);

			assert.ok( e.matchesSingleElement(1) );
			assert.ok( ! e.matchesSingleElement(2) );
		},
		"should not match with an empty array": function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			assert.ok( ! e.matchesSingleElement(2) );
			assert.ok( ! e.matches({"a":null}) );
			assert.ok( ! e.matches({"a":1}) );
		},
		"should match with multiple elements": function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			e.getArrayFilterEntries().addEquality(1);
			e.getArrayFilterEntries().addEquality("r");
			e.getArrayFilterEntries().addEquality(true);
			e.getArrayFilterEntries().addEquality(1);

			assert.ok( e.matchesSingleElement( 1 ) );
			assert.ok( e.matchesSingleElement( "r" ) );
			assert.ok( e.matchesSingleElement( true ) );
			assert.ok( !e.matchesSingleElement( false ) );
		},
		"should match a scalar":function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			e.getArrayFilterEntries().addEquality(5);

			assert.ok( e.matches({"a":5}) );
			assert.ok( ! e.matches({"a":4}) );
		},
		"should match an array":function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			e.getArrayFilterEntries().addEquality(5);

			assert.ok( e.matches({"a":[5,6]}) );
			assert.ok( ! e.matches({"a":[6,7]}) );
			assert.ok( ! e.matches({"a":[[5]]}) );
		},
		"should match null": function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			e.getArrayFilterEntries().addEquality(null);

			assert.ok( e.matches({}) );
			assert.ok( e.matches({"a":null}) );
			assert.ok( ! e.matches({"a":4}) );
			// A non-existent field is treated same way as an empty bson object
			assert.ok( e.matches({"b":4}) );
		},
		"should match undefined": function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			assert( e.getArrayFilterEntries().addEquality(undefined) !==  ErrorCodes.OK);
		},
		"should match MinKey": function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			e._arrayEntries._equalities = [MinKey];

			assert.ok( e.matches({"a":MinKey}) );
			assert.ok( ! e.matches({"a":MaxKey}) );
			assert.ok( ! e.matches({"a":4}) );
		},
		"should match MaxKey": function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			e._arrayEntries._equalities = [MaxKey];

			assert.ok( ! e.matches({"a":MinKey}) );
			assert.ok( e.matches({"a":MaxKey}) );
			assert.ok( ! e.matches({"a":4}) );
		},
		"should match a full array":function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			assert.strictEqual(s.code, ErrorCodes.OK);

			e.getArrayFilterEntries().addEquality([1,2]);
			e.getArrayFilterEntries().addEquality(4);
			e.getArrayFilterEntries().addEquality(5);

			assert.ok( e.matches({"a":[1,2]}) );
			assert.ok( ! e.matches({"a":[1,2,3]}) );
			assert.ok( ! e.matches({"a":[1]}) );
			assert.ok( ! e.matches({"a":1}) );
		},
		"should match elemmatchKey": function() {
			var e = new InMatchExpression();
			var s = e.init("a");
			var m = new MatchDetails();

			assert.strictEqual(s.code, ErrorCodes.OK);

			e.getArrayFilterEntries().addEquality(5);
			e.getArrayFilterEntries().addEquality(2);
			m.requestElemMatchKey();
			assert.ok( !e.matches({"a":4}, m) );
			assert.ok( !m.hasElemMatchKey() );
			assert.ok( e.matches({"a":5}, m) );
			assert.ok( !m.hasElemMatchKey() );
			assert.ok( e.matches({"a":[1,2,5]}, m ));
			assert.ok( m.hasElemMatchKey() );
			assert.strictEqual( m.elemMatchKey(), "1" );

		}

	}
};