database

package
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 Go to latest Published: Sep 2, 2023 License: Apache-2.0 Imports: 8 Imported by: 1

README

Database

A set of interface wrappers for Go's MongoDB driver

Usage

Usage is just like using the Mongo driver. The biggest difference is that instead of each object being a struct you will work with interfaces by the same name. This allow you to mock and test your code. Here is a small example usage.

package main

import (
	"github.com/app-nerds/kit/v6/database"
	"github.com/globalsign/mgo/bson"
)

func main() {
	var err error
	var session database.Session
	var testData []string

	if session, err = database.Dial("localhost:27017"); err != nil {
		panic(err)
	}

	db := session.DB("mydatabase")
	defer session.Close()

	collection := db.C("collection")

	if err = collection.Find(bson.M{}).All(&testData); err != nil {
		panic(err)
	}
}

Testing

This package provides a full set of mock structs that allow you to mock your database interactions for unit testing. Below is an example.

package example_test

import (
	"reflect"
	"testing"

	"pkg/example"
	"github.com/app-nerds/kit/v6/database"
)

func TestSomeFunc(t *testing.T) {
	allCalled := false
	findCalled := false

	expected := []string{
		"value 1",
		"value 2",
	}

	mock := &database.CollectionMock{
		FindFunc: func(query interface{}) database.Query {
			findCalled = true

			return &database.QueryMock{
				AllFunc: func(result interface{}) error {
					allCalled = true
					database.WriteToResultInterface([]string{"value 1", "value 2"})
					return nil
				},
			}
		},
	}

	component := example.Example{
		Collection: mock,
	}

	actual, err := component.SomeMethod()

	if err != nil {
		t.Errorf("Expected err to be nil")
	}

	if !allCalled {
		t.Errorf("Expected All() to be called")
	}

	if !findCalled {
		t.Errorf("Expected Find() to be called")
	}

	if !reflect.DeepEqual(actual, expected) {
		t.Errorf("Expected %+v to be %+v", actual, expected)
	}
}

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func WriteToResultInterface 

func WriteToResultInterface(value, result interface{}) error

WriteToResultInterface writes a value to an interface

Types

type Collection 

type Collection interface {
	Count() (int, error)
	DropAllIndexes() error
	DropCollection() error
	DropIndex(key ...string) error
	DropIndexName(name string) error
	EnsureIndex(index mgo.Index) error
	EnsureIndexKey(key ...string) error
	Find(query interface{}) Query
	FindWithPaging(query interface{}, skip, limit int) (Query, int, error)
	FindId(id interface{}) Query
	Indexes() ([]mgo.Index, error)
	Insert(docs ...interface{}) error
	Remove(selector interface{}) error
	RemoveAll(selector interface{}) (*mgo.ChangeInfo, error)
	RemoveId(id interface{}) error
	Update(selector interface{}, update interface{}) error
	UpdateAll(selector interface{}, update interface{}) (*mgo.ChangeInfo, error)
	UpdateId(id interface{}, update interface{}) error
	Upsert(selector interface{}, update interface{}) (*mgo.ChangeInfo, error)
	UpsertId(id interface{}, update interface{}) (*mgo.ChangeInfo, error)
}

Collection is an interface to access to the collection struct.

type CollectionMock 

type CollectionMock struct {
	CountFunc          func() (int, error)
	DropAllIndexesFunc func() error
	DropCollectionFunc func() error
	DropIndexFunc      func(key ...string) error
	DropIndexNameFunc  func(name string) error
	EnsureIndexFunc    func(index mgo.Index) error
	EnsureIndexKeyFunc func(key ...string) error
	FindFunc           func(query interface{}) Query
	FindIdFunc         func(id interface{}) Query
	FindWithPagingFunc func(query interface{}, skip, limit int) (Query, int, error)
	IndexesFunc        func() ([]mgo.Index, error)
	InsertFunc         func(docs ...interface{}) error
	RemoveFunc         func(selector interface{}) error
	RemoveAllFunc      func(selector interface{}) (*mgo.ChangeInfo, error)
	RemoveIdFunc       func(id interface{}) error
	UpdateFunc         func(selector interface{}, update interface{}) error
	UpdateAllFunc      func(selector interface{}, update interface{}) (*mgo.ChangeInfo, error)
	UpdateIdFunc       func(id interface{}, update interface{}) error
	UpsertFunc         func(selector interface{}, update interface{}) (*mgo.ChangeInfo, error)
	UpsertIdFunc       func(id interface{}, update interface{}) (*mgo.ChangeInfo, error)
}

CollectionMock is a mock Collection

func (*CollectionMock) Count 

func (c *CollectionMock) Count() (int, error)

Count is a mock function

func (*CollectionMock) DropAllIndexes 

func (c *CollectionMock) DropAllIndexes() error

DropAllIndexes is a mock function

func (*CollectionMock) DropCollection 

func (c *CollectionMock) DropCollection() error

DropCollection is a mock function

func (*CollectionMock) DropIndex 

func (c *CollectionMock) DropIndex(key ...string) error

DropIndex is a mock function

func (*CollectionMock) DropIndexName 

func (c *CollectionMock) DropIndexName(name string) error

DropIndexName is a mock function

func (*CollectionMock) EnsureIndex 

func (c *CollectionMock) EnsureIndex(index mgo.Index) error

EnsureIndex is a mock function

func (*CollectionMock) EnsureIndexKey 

func (c *CollectionMock) EnsureIndexKey(key ...string) error

EnsureIndexKey is a mock function

func (*CollectionMock) Find 

func (c *CollectionMock) Find(query interface{}) Query

Find is a mock function

func (*CollectionMock) FindId 

func (c *CollectionMock) FindId(id interface{}) Query

FindId is a mock function

func (*CollectionMock) FindWithPaging 

func (c *CollectionMock) FindWithPaging(query interface{}, skip, limit int) (Query, int, error)

FindWithPaging is a mock function

func (*CollectionMock) Indexes 

func (c *CollectionMock) Indexes() ([]mgo.Index, error)

Indexes is a mock function

func (*CollectionMock) Insert 

func (c *CollectionMock) Insert(docs ...interface{}) error

Insert is a mock function

func (*CollectionMock) Remove 

func (c *CollectionMock) Remove(selector interface{}) error

Remov is a mock functione

func (*CollectionMock) RemoveAll 

func (c *CollectionMock) RemoveAll(selector interface{}) (*mgo.ChangeInfo, error)

RemoveAll is a mock function

func (*CollectionMock) RemoveId 

func (c *CollectionMock) RemoveId(id interface{}) error

RemoveId is a mock function

func (*CollectionMock) Update 

func (c *CollectionMock) Update(selector interface{}, update interface{}) error

Update is a mock function

func (*CollectionMock) UpdateAll 

func (c *CollectionMock) UpdateAll(selector interface{}, update interface{}) (*mgo.ChangeInfo, error)

UpdateAll is a mock function

func (*CollectionMock) UpdateId 

func (c *CollectionMock) UpdateId(id interface{}, update interface{}) error

UpdateId is a mock function

func (*CollectionMock) Upsert 

func (c *CollectionMock) Upsert(selector interface{}, update interface{}) (*mgo.ChangeInfo, error)

Upsert is a mock function

func (*CollectionMock) UpsertId 

func (c *CollectionMock) UpsertId(id interface{}, update interface{}) (*mgo.ChangeInfo, error)

UpsertId is a mock function

type Database 

type Database interface {
	C(name string) Collection
	GridFS(prefix string) GridFS
}

DataLayer is an interface to access to the database struct.

type DatabaseMock 

type DatabaseMock struct {
	CFunc      func(name string) Collection
	GridFSFunc func(prefix string) GridFS
}

DatabaseMock is a mock Database

func (*DatabaseMock) C 

func (d *DatabaseMock) C(name string) Collection

C is a mock function

func (*DatabaseMock) GridFS 

func (d *DatabaseMock) GridFS(prefix string) GridFS

GridFS is a mock function

type DatabaseUploadResponse 

type DatabaseUploadResponse struct {
	BytesWritten int           `json:"bytesWritten"`
	FileID       bson.ObjectId `json:"fileID"`
	FileName     string        `json:"fileName"`
	Height       int           `json:"height"`
	Width        int           `json:"width"`
}

A DatabaseUploadResponse is used to alert a caller information about their uploaded file.

type DatabaseUploader 

type DatabaseUploader interface {
	Upload(reader io.Reader, name, path string) (*DatabaseUploadResponse, error)
}

A DatabaseUploader defines an interface for uploading files to a database

type GridFS 

type GridFS interface {
	Create(name string) (GridFile, error)
	Find(query interface{}) Query
	Open(name string) (GridFile, error)
	OpenId(id interface{}) (GridFile, error)
	Remove(name string) (err error)
	RemoveId(id interface{}) error
}

GridFS stores files in a MongoDB database

type GridFSMock 

type GridFSMock struct {
	CreateFunc   func(name string) (GridFile, error)
	FindFunc     func(query interface{}) Query
	OpenFunc     func(name string) (GridFile, error)
	OpenIdFunc   func(id interface{}) (GridFile, error)
	RemoveFunc   func(name string) (err error)
	RemoveIdFunc func(id interface{}) error
}

GridFSMock mocks GridFS

func (*GridFSMock) Create 

func (g *GridFSMock) Create(name string) (GridFile, error)

All is a mock function

func (*GridFSMock) Find 

func (g *GridFSMock) Find(query interface{}) Query

All is a mock function

func (*GridFSMock) Open 

func (g *GridFSMock) Open(name string) (GridFile, error)

All is a mock function

func (*GridFSMock) OpenId 

func (g *GridFSMock) OpenId(id interface{}) (GridFile, error)

All is a mock function

func (*GridFSMock) Remove 

func (g *GridFSMock) Remove(name string) (err error)

All is a mock function

func (*GridFSMock) RemoveId 

func (g *GridFSMock) RemoveId(id interface{}) error

All is a mock function

type GridFile 

type GridFile interface {
	Abort()
	Close() error
	ContentType() string
	GetMeta(result interface{}) error
	Id() interface{}
	MD5() string
	Name() string
	Read(b []byte) (int, error)
	Seek(offset int64, whence int) (int64, error)
	SetChunkSize(bytes int)
	SetContentType(ctype string)
	SetId(id interface{})
	SetMeta(metadata interface{})
	SetName(name string)
	SetUploadDate(t time.Time)
	Size() int64
	Write(data []byte) (int, error)
}

GridFile represents a single file in GridFS

type GridFileMock 

type GridFileMock struct {
	AbortFunc          func()
	CloseFunc          func() error
	ContentTypeFunc    func() string
	GetMetaFunc        func(result interface{}) error
	IdFunc             func() interface{}
	MD5Func            func() string
	NameFunc           func() string
	ReadFunc           func(b []byte) (int, error)
	SeekFunc           func(offset int64, whence int) (int64, error)
	SetChunkSizeFunc   func(bytes int)
	SetContentTypeFunc func(ctype string)
	SetIdFunc          func(id interface{})
	SetMetaFunc        func(metadata interface{})
	SetNameFunc        func(name string)
	SetUploadDateFunc  func(t time.Time)
	SizeFunc           func() int64
	WriteFunc          func(data []byte) (int, error)
}

GridFileMock is a mock GridFile

func (*GridFileMock) Abort 

func (g *GridFileMock) Abort()

All is a mock function

func (*GridFileMock) Close 

func (g *GridFileMock) Close() error

All is a mock function

func (*GridFileMock) ContentType 

func (g *GridFileMock) ContentType() string

All is a mock function

func (*GridFileMock) GetMeta 

func (g *GridFileMock) GetMeta(result interface{}) error

All is a mock function

func (*GridFileMock) Id 

func (g *GridFileMock) Id() interface{}

All is a mock function

func (*GridFileMock) MD5 

func (g *GridFileMock) MD5() string

All is a mock function

func (*GridFileMock) Name 

func (g *GridFileMock) Name() string

All is a mock function

func (*GridFileMock) Read 

func (g *GridFileMock) Read(b []byte) (int, error)

All is a mock function

func (*GridFileMock) Seek 

func (g *GridFileMock) Seek(offset int64, whence int) (int64, error)

All is a mock function

func (*GridFileMock) SetChunkSize 

func (g *GridFileMock) SetChunkSize(bytes int)

All is a mock function

func (*GridFileMock) SetContentType 

func (g *GridFileMock) SetContentType(ctype string)

All is a mock function

func (*GridFileMock) SetId 

func (g *GridFileMock) SetId(id interface{})

All is a mock function

func (*GridFileMock) SetMeta 

func (g *GridFileMock) SetMeta(metadata interface{})

All is a mock function

func (*GridFileMock) SetName 

func (g *GridFileMock) SetName(name string)

All is a mock function

func (*GridFileMock) SetUploadDate 

func (g *GridFileMock) SetUploadDate(t time.Time)

All is a mock function

func (*GridFileMock) Size 

func (g *GridFileMock) Size() int64

All is a mock function

func (*GridFileMock) Write 

func (g *GridFileMock) Write(data []byte) (int, error)

All is a mock function

type Iter 

type Iter interface {
	All(result interface{}) error
	Close() error
	Done() bool
	Err() error
	For(result interface{}, f func() error) error
	Next(result interface{}) bool
	State() (int64, []bson.Raw)
	Timeout() bool
}

type IterMock 

type IterMock struct {
	AllFunc     func(result interface{}) error
	CloseFunc   func() error
	DoneFunc    func() bool
	ErrFunc     func() error
	ForFunc     func(result interface{}, f func() error) error
	NextFunc    func(result interface{}) bool
	StateFunc   func() (int64, []bson.Raw)
	TimeoutFunc func() bool
}

IterMock is a mock Iter

func (*IterMock) All 

func (i *IterMock) All(result interface{}) error

All is a mock function

func (*IterMock) Close 

func (i *IterMock) Close() error

All is a mock function

func (*IterMock) Done 

func (i *IterMock) Done() bool

All is a mock function

func (*IterMock) Err 

func (i *IterMock) Err() error

All is a mock function

func (*IterMock) For 

func (i *IterMock) For(result interface{}, f func() error) error

All is a mock function

func (*IterMock) Next 

func (i *IterMock) Next(result interface{}) bool

All is a mock function

func (*IterMock) State 

func (i *IterMock) State() (int64, []bson.Raw)

All is a mock function

func (*IterMock) Timeout 

func (i *IterMock) Timeout() bool

All is a mock function

type MongoCollection 

type MongoCollection struct {
	*mgo.Collection
}

MongoCollection wraps a mgo.Collection to embed methods in models.

func (*MongoCollection) Count 

func (c *MongoCollection) Count() (int, error)

func (*MongoCollection) DropAllIndexes 

func (c *MongoCollection) DropAllIndexes() error

func (*MongoCollection) DropCollection 

func (c *MongoCollection) DropCollection() error

func (*MongoCollection) DropIndex 

func (c *MongoCollection) DropIndex(key ...string) error

func (*MongoCollection) DropIndexName 

func (c *MongoCollection) DropIndexName(name string) error

func (*MongoCollection) EnsureIndex 

func (c *MongoCollection) EnsureIndex(index mgo.Index) error

func (*MongoCollection) EnsureIndexKey 

func (c *MongoCollection) EnsureIndexKey(key ...string) error

func (*MongoCollection) Find 

func (c *MongoCollection) Find(query interface{}) Query

Find shadows *mgo.Collection to returns a Query interface instead of *mgo.Query.

func (*MongoCollection) FindId 

func (c *MongoCollection) FindId(id interface{}) Query

func (*MongoCollection) FindWithPaging 

func (c *MongoCollection) FindWithPaging(query interface{}, skip, limit int) (Query, int, error)

func (*MongoCollection) Indexes 

func (c *MongoCollection) Indexes() ([]mgo.Index, error)

func (*MongoCollection) Insert 

func (c *MongoCollection) Insert(docs ...interface{}) error

func (*MongoCollection) Remove 

func (c *MongoCollection) Remove(selector interface{}) error

func (*MongoCollection) RemoveAll 

func (c *MongoCollection) RemoveAll(selector interface{}) (*mgo.ChangeInfo, error)

func (*MongoCollection) RemoveId 

func (c *MongoCollection) RemoveId(id interface{}) error

func (*MongoCollection) Update 

func (c *MongoCollection) Update(selector interface{}, update interface{}) error

func (*MongoCollection) UpdateAll 

func (c *MongoCollection) UpdateAll(selector interface{}, update interface{}) (*mgo.ChangeInfo, error)

func (*MongoCollection) UpdateId 

func (c *MongoCollection) UpdateId(id interface{}, update interface{}) error

func (*MongoCollection) Upsert 

func (c *MongoCollection) Upsert(selector interface{}, update interface{}) (*mgo.ChangeInfo, error)

func (*MongoCollection) UpsertId 

func (c *MongoCollection) UpsertId(id interface{}, update interface{}) (*mgo.ChangeInfo, error)

type MongoDatabase 

type MongoDatabase struct {
	*mgo.Database
}

MongoDatabase wraps a mgo.Database to embed methods in models.

func (MongoDatabase) C 

func (d MongoDatabase) C(name string) Collection

C shadows *mgo.DB to returns a DataLayer interface instead of *mgo.Database.

func (MongoDatabase) GridFS 

func (d MongoDatabase) GridFS(prefix string) GridFS

type MongoGridFS 

type MongoGridFS struct {
	*mgo.GridFS
}

MongoGridFS is the wrapper around GridFS

func (*MongoGridFS) Create 

func (gfs *MongoGridFS) Create(name string) (GridFile, error)

Create makes a new GridFS storage

func (*MongoGridFS) Find 

func (gfs *MongoGridFS) Find(query interface{}) Query

Find queries GridFS

func (*MongoGridFS) Open 

func (gfs *MongoGridFS) Open(name string) (GridFile, error)

Open opens a grid file

func (*MongoGridFS) OpenId 

func (gfs *MongoGridFS) OpenId(id interface{}) (GridFile, error)

func (*MongoGridFS) Remove 

func (gfs *MongoGridFS) Remove(name string) error

func (*MongoGridFS) RemoveId 

func (gfs *MongoGridFS) RemoveId(id interface{}) error

type MongoGridFile 

type MongoGridFile struct {
	*mgo.GridFile
}

func (*MongoGridFile) Abort 

func (mgf *MongoGridFile) Abort()

func (*MongoGridFile) Close 

func (mgf *MongoGridFile) Close() error

func (*MongoGridFile) ContentType 

func (mgf *MongoGridFile) ContentType() string

func (*MongoGridFile) GetMeta 

func (mgf *MongoGridFile) GetMeta(result interface{}) error

func (*MongoGridFile) Id 

func (mgf *MongoGridFile) Id() interface{}

func (*MongoGridFile) MD5 

func (mgf *MongoGridFile) MD5() string

func (*MongoGridFile) Name 

func (mgf *MongoGridFile) Name() string

func (*MongoGridFile) Read 

func (mgf *MongoGridFile) Read(b []byte) (int, error)

func (*MongoGridFile) Seek 

func (mgf *MongoGridFile) Seek(offset int64, whence int) (int64, error)

func (*MongoGridFile) SetChunkSize 

func (mgf *MongoGridFile) SetChunkSize(bytes int)

func (*MongoGridFile) SetContentType 

func (mgf *MongoGridFile) SetContentType(ctype string)

func (*MongoGridFile) SetId 

func (mgf *MongoGridFile) SetId(id interface{})

func (*MongoGridFile) SetMeta 

func (mgf *MongoGridFile) SetMeta(metadata interface{})

func (*MongoGridFile) SetName 

func (mgf *MongoGridFile) SetName(name string)

func (*MongoGridFile) SetUploadDate 

func (mgf *MongoGridFile) SetUploadDate(t time.Time)

func (*MongoGridFile) Size 

func (mgf *MongoGridFile) Size() int64

func (*MongoGridFile) Write 

func (mgf *MongoGridFile) Write(data []byte) (int, error)

type MongoIter 

type MongoIter struct {
	*mgo.Iter
}

func (*MongoIter) All 

func (iter *MongoIter) All(result interface{}) error

func (*MongoIter) Close 

func (iter *MongoIter) Close() error

func (*MongoIter) Done 

func (iter *MongoIter) Done() bool

func (*MongoIter) Err 

func (iter *MongoIter) Err() error

func (*MongoIter) For 

func (iter *MongoIter) For(result interface{}, f func() error) error

func (*MongoIter) Next 

func (iter *MongoIter) Next(result interface{}) bool

func (*MongoIter) State 

func (iter *MongoIter) State() (int64, []bson.Raw)

func (*MongoIter) Timeout 

func (iter *MongoIter) Timeout() bool

type MongoQuery 

type MongoQuery struct {
	*mgo.Query
}

MongoQuery wraps a mgo.Query to embed methods in models.

func (*MongoQuery) All 

func (q *MongoQuery) All(result interface{}) error

func (*MongoQuery) Count 

func (q *MongoQuery) Count() (int, error)

func (*MongoQuery) Distinct 

func (q *MongoQuery) Distinct(key string, result interface{}) error

func (*MongoQuery) Limit 

func (q *MongoQuery) Limit(n int) Query

func (*MongoQuery) One 

func (q *MongoQuery) One(result interface{}) error

func (*MongoQuery) Select 

func (q *MongoQuery) Select(selector interface{}) Query

func (*MongoQuery) Skip 

func (q *MongoQuery) Skip(n int) Query

func (*MongoQuery) Sort 

func (q *MongoQuery) Sort(fields ...string) Query

type MongoSession 

type MongoSession struct {
	*mgo.Session
}

MongoSession is currently a Mongo session.

func (MongoSession) DB 

func (s MongoSession) DB(name string) Database

DB shadows *mgo.DB to returns a DataLayer interface instead of *mgo.Database.

type MongoUploader 

type MongoUploader struct {
	DB Database
}

A MongoUploader uploads files to a MongoDB database. This struct satisfies the DatabaseUploader interface

func (*MongoUploader) Upload 

func (u *MongoUploader) Upload(reader io.Reader, name, path string) (*DatabaseUploadResponse, error)

Upload uploads a file into the MongoDB GridFS system

type Query 

type Query interface {
	All(result interface{}) error
	Count() (int, error)
	Distinct(key string, result interface{}) error
	Limit(n int) Query
	One(result interface{}) (err error)
	Select(selector interface{}) Query
	Skip(n int) Query
	Sort(fields ...string) Query
}

Query is an interface to access to the database struct

type QueryMock 

type QueryMock struct {
	AllFunc      func(result interface{}) error
	CountFunc    func() (int, error)
	DistinctFunc func(key string, result interface{}) error
	LimitFunc    func(n int) Query
	OneFunc      func(result interface{}) error
	SelectFunc   func(selector interface{}) Query
	SkipFunc     func(n int) Query
	SortFunc     func(fields ...string) Query
}

QueryMock mocks a Query

func (*QueryMock) All 

func (q *QueryMock) All(result interface{}) error

All is a mock function

func (*QueryMock) Count 

func (q *QueryMock) Count() (int, error)

All is a mock function

func (*QueryMock) Distinct 

func (q *QueryMock) Distinct(key string, result interface{}) error

All is a mock function

func (*QueryMock) Limit 

func (q *QueryMock) Limit(n int) Query

All is a mock function

func (*QueryMock) One 

func (q *QueryMock) One(result interface{}) error

All is a mock function

func (*QueryMock) Select 

func (q *QueryMock) Select(selector interface{}) Query

All is a mock function

func (*QueryMock) Skip 

func (q *QueryMock) Skip(n int) Query

All is a mock function

func (*QueryMock) Sort 

func (q *QueryMock) Sort(fields ...string) Query

All is a mock function

type Session 

type Session interface {
	DB(name string) Database
	Close()
}

Session is an interface to access to the Session struct.

func Dial 

func Dial(url string) (Session, error)

Dial establishes a new session to one or more Mongo databases

type SessionMock 

type SessionMock struct {
	DBFunc    func(name string) Database
	CloseFunc func()
}

SessionMock is a mock of Session

func (*SessionMock) Close 

func (s *SessionMock) Close()

Close is a mock function

func (*SessionMock) DB 

func (s *SessionMock) DB(name string) Database

DB is a mock function

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