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// Copyright (C) MongoDB, Inc. 2014-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package intents
import (
"testing"
"github.com/mongodb/mongo-tools/common/testtype"
. "github.com/smartystreets/goconvey/convey"
)
func TestIntentManager(t *testing.T) {
var manager *Manager
testtype.VerifyTestType(t, testtype.UnitTestType)
Convey("With an empty IntentManager", t, func() {
manager = NewIntentManager()
So(manager, ShouldNotBeNil)
Convey("putting a series of added bson intents", func() {
manager.Put(&Intent{DB: "1", C: "1", Location: "/b1/"})
manager.Put(&Intent{DB: "1", C: "2", Location: "/b2/"})
manager.Put(&Intent{DB: "1", C: "3", Location: "/b3/"})
manager.Put(&Intent{DB: "2", C: "1", Location: "/b4/"})
So(len(manager.intentsByDiscoveryOrder), ShouldEqual, 4)
So(len(manager.intents), ShouldEqual, 4)
Convey("and then some matching metadata intents", func() {
manager.Put(&Intent{DB: "2", C: "1", MetadataLocation: "/4m/"})
manager.Put(&Intent{DB: "1", C: "3", MetadataLocation: "/3m/"})
manager.Put(&Intent{DB: "1", C: "1", MetadataLocation: "/1m/"})
manager.Put(&Intent{DB: "1", C: "2", MetadataLocation: "/2m/"})
Convey("the size of the queue should be unchanged", func() {
So(len(manager.intentsByDiscoveryOrder), ShouldEqual, 4)
So(len(manager.intents), ShouldEqual, 4)
})
Convey("popping them from the IntentManager", func() {
manager.Finalize(Legacy)
it0 := manager.Pop()
it1 := manager.Pop()
it2 := manager.Pop()
it3 := manager.Pop()
it4 := manager.Pop()
So(it4, ShouldBeNil)
Convey("should return them in insert order", func() {
So(*it0, ShouldResemble,
Intent{DB: "1", C: "1", Location: "/b1/", MetadataLocation: "/1m/"})
So(*it1, ShouldResemble,
Intent{DB: "1", C: "2", Location: "/b2/", MetadataLocation: "/2m/"})
So(*it2, ShouldResemble,
Intent{DB: "1", C: "3", Location: "/b3/", MetadataLocation: "/3m/"})
So(*it3, ShouldResemble,
Intent{DB: "2", C: "1", Location: "/b4/", MetadataLocation: "/4m/"})
})
})
})
Convey("but adding non-matching intents", func() {
manager.Put(&Intent{DB: "7", C: "49", MetadataLocation: "/5/"})
manager.Put(&Intent{DB: "27", C: "B", MetadataLocation: "/6/"})
Convey("should increase the size, because they are not merged in", func() {
So(len(manager.intentsByDiscoveryOrder), ShouldEqual, 6)
So(len(manager.intents), ShouldEqual, 6)
})
})
Convey("using the Peek() method", func() {
peeked := manager.Peek()
So(peeked, ShouldNotBeNil)
So(peeked, ShouldResemble, manager.intentsByDiscoveryOrder[0])
Convey("modifying the returned copy should not modify the original", func() {
peeked.DB = "SHINY NEW VALUE"
So(peeked, ShouldNotResemble, manager.intentsByDiscoveryOrder[0])
})
})
})
})
}
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