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di_test.go
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di_test.go
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/*
* Copyright (c) 2024 Go IoC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*/
package di
import (
"context"
"errors"
"reflect"
"strconv"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/suite"
)
type TestSuite struct {
suite.Suite
}
func (*TestSuite) TearDownTest() {
resetContainer()
closedSingletons = nil
singletonBeansWithErrorOnClose = nil
}
func TestDITestSuite(t *testing.T) {
suite.Run(t, new(TestSuite))
}
func (suite *TestSuite) TestInitializeContainerTwice() {
err := InitializeContainer()
assert.NoError(suite.T(), err)
expectedError := errors.New("container is already initialized: reinitialization is not supported")
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestReinitializeContainerAfterReset() {
err := InitializeContainer()
assert.NoError(suite.T(), err)
resetContainer()
err = InitializeContainer()
assert.NoError(suite.T(), err)
}
func (suite *TestSuite) TestGetInstanceBeforeContainerInitialization() {
expectedError := errors.New("container is not initialized: can't lookup instances of beans yet")
instance, err := GetInstanceSafe("")
assert.Nil(suite.T(), instance)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterBeanAfterContainerInitialization() {
err := InitializeContainer()
assert.NoError(suite.T(), err)
expectedError := errors.New("container is already initialized: can't register new bean")
overwritten, err := RegisterBean("", nil)
assert.False(suite.T(), overwritten)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
overwritten, err = RegisterBeanInstance("", nil)
assert.False(suite.T(), overwritten)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestBeanIsNotRegistered() {
err := InitializeContainer()
assert.NoError(suite.T(), err)
expectedError := errors.New("bean is not registered: someBean")
instance, err := GetInstanceSafe("someBean")
assert.Nil(suite.T(), instance)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestBeanFactoryCalledOnce() {
var countOfCalls = 0
overwritten, err := RegisterBeanFactory("beanId", Singleton, func(context.Context) (interface{}, error) {
countOfCalls++
return new(string), nil
})
assert.False(suite.T(), overwritten)
assert.Nil(suite.T(), err)
err = InitializeContainer()
assert.False(suite.T(), overwritten)
assert.Nil(suite.T(), err)
assert.Equal(suite.T(), 1, countOfCalls)
instance, err := GetInstanceSafe("beanId")
assert.Nil(suite.T(), err)
assert.NotNil(suite.T(), instance)
assert.Equal(suite.T(), 1, countOfCalls)
}
func (suite *TestSuite) TestRegisterBeanPostprocessorAfterContainerInitialization() {
err := InitializeContainer()
assert.NoError(suite.T(), err)
expectedError := errors.New("container is already initialized: can't register bean postprocessor")
err = RegisterBeanPostprocessor(reflect.TypeOf((*string)(nil)), nil)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterNonReferenceBean() {
expectedError := errors.New("bean type must be a pointer")
overwritten, err := RegisterBean("", reflect.TypeOf(""))
assert.False(suite.T(), overwritten)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterNonReferenceBeanInstance() {
expectedError := errors.New("bean instance must be a pointer")
overwritten, err := RegisterBeanInstance("", "")
assert.False(suite.T(), overwritten)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterNonReferenceSingletonBeanFactory() {
overwritten, err := RegisterBeanFactory("", Singleton, func(context.Context) (interface{}, error) {
return "", nil
})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("bean factory must return pointer")
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterNonReferencePrototypeBeanFactory() {
overwritten, err := RegisterBeanFactory("", Prototype, func(context.Context) (interface{}, error) {
return "", nil
})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("bean factory must return pointer")
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("")
assert.Nil(suite.T(), instance)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterSingletonBeanUnsupportedScope() {
type SingletonBean struct {
Scope Scope `di.scope:"invalid"`
}
expectedError := errors.New("unsupported scope: invalid")
overwritten, err := RegisterBean("", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterSingletonBeanNonReferenceDependency() {
type SingletonBean struct {
SomeOtherBean string `di.inject:"someOtherBean"`
}
expectedError := errors.New(unsupportedDependencyType)
overwritten, err := RegisterBean("", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterSingletonBeanWrongOptionalValue() {
type SingletonBean struct {
SomeOtherBean *string `di.inject:"someOtherBean" di.optional:"fls"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("invalid di.optional value: fls")
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterSingletonBeanMissingImplicitlyRequiredDependency() {
type SingletonBean struct {
SomeOtherBean *string `di.inject:"someOtherBean"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("no dependency found")
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterSingletonBeanMissingExplicitlyRequiredDependency() {
type SingletonBean struct {
SomeOtherBean *string `di.inject:"someOtherBean" di.optional:"false"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("no dependency found")
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterSingletonBeanMissingOptionalDependency() {
type SingletonBean struct {
SomeOtherBean *string `di.inject:"someOtherBean" di.optional:"true"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
}
func (suite *TestSuite) TestRegisterBeanInstanceWithOverwriting() {
overwritten, err := RegisterBeanInstance("bean", new(string))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBeanInstance("bean", new(string))
assert.True(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
}
func (suite *TestSuite) TestRegisterBeanWithOverwriting() {
type Bean1 struct {
}
type Bean2 struct {
}
overwritten, err := RegisterBean("bean", reflect.TypeOf((*Bean1)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("bean", reflect.TypeOf((*Bean2)(nil)))
assert.True(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
bean2 := GetInstance("bean").(*Bean2)
assert.NotNil(suite.T(), bean2)
}
func (suite *TestSuite) TestRegisterBeanWithOverwritingFromSingletonToPrototypeScope() {
type SingletonBean struct {
Scope Scope `di.scope:"singleton"`
}
type PrototypeBean struct {
Scope Scope `di.scope:"prototype"`
}
overwritten, err := RegisterBean("bean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("bean", reflect.TypeOf((*PrototypeBean)(nil)))
assert.True(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance1 := GetInstance("bean").(*PrototypeBean)
instance2 := GetInstance("bean").(*PrototypeBean)
assert.False(suite.T(), instance1 == instance2)
}
func (suite *TestSuite) TestRegisterSingletonBeanImplicitScope() {
type SingletonBean struct {
someField string
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance1 := GetInstance("singletonBean").(*SingletonBean)
instance2 := GetInstance("singletonBean").(*SingletonBean)
assert.True(suite.T(), instance1 == instance2)
}
func (suite *TestSuite) TestRegisterSingletonBeanExplicitScope() {
type SingletonBean struct {
Scope Scope `di.scope:"singleton"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance1 := GetInstance("singletonBean").(*SingletonBean)
instance2 := GetInstance("singletonBean").(*SingletonBean)
assert.True(suite.T(), instance1 == instance2)
}
func (suite *TestSuite) TestRegisterSingletonBeanInstance() {
overwritten, err := RegisterBeanInstance("singletonBean", new(string))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance1 := GetInstance("singletonBean").(*string)
instance2 := GetInstance("singletonBean").(*string)
assert.True(suite.T(), instance1 == instance2)
}
func (suite *TestSuite) TestRegisterSingletonBeanFactoryWithError() {
overwritten, err := RegisterBeanFactory("singletonBean", Singleton, func(context.Context) (interface{}, error) {
return nil, errors.New("error in the bean factory")
})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("error in the bean factory")
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterSingletonBeanFactory() {
overwritten, err := RegisterBeanFactory("singletonBean", Singleton, func(context.Context) (interface{}, error) {
return new(string), nil
})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance1 := GetInstance("singletonBean").(*string)
instance2 := GetInstance("singletonBean").(*string)
assert.True(suite.T(), instance1 == instance2)
}
func (suite *TestSuite) TestRegisterBeanFactoryAfterContainerInitialization() {
err := InitializeContainer()
assert.NoError(suite.T(), err)
expectedFactoryError := errors.New("container is already initialized: can't register new bean factory")
overwritten, err := RegisterBeanFactory("", Singleton, nil)
assert.False(suite.T(), overwritten)
assert.Error(suite.T(), err)
assert.Equal(suite.T(), expectedFactoryError, err)
}
func (suite *TestSuite) TestRegisterPrototypeBean() {
type PrototypeBean struct {
Scope Scope `di.scope:"prototype"`
}
overwritten, err := RegisterBean("prototypeBean", reflect.TypeOf((*PrototypeBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance1 := GetInstance("prototypeBean").(*PrototypeBean)
instance2 := GetInstance("prototypeBean").(*PrototypeBean)
assert.True(suite.T(), instance1 != instance2)
}
func (suite *TestSuite) TestRegisterPrototypeBeanFactoryWithError() {
overwritten, err := RegisterBeanFactory("prototypeBean", Prototype, func(context.Context) (interface{}, error) {
return nil, errors.New("error in the bean factory")
})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
expectedError := errors.New("error in the bean factory")
instance, err := GetInstanceSafe("prototypeBean")
assert.Nil(suite.T(), instance)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRegisterPrototypeBeanFactory() {
overwritten, err := RegisterBeanFactory("prototypeBean", Prototype, func(context.Context) (interface{}, error) {
return new(string), nil
})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance1 := GetInstance("prototypeBean").(*string)
instance2 := GetInstance("prototypeBean").(*string)
assert.True(suite.T(), instance1 != instance2)
}
type beanWithInjectedBeanFactory struct {
BeanFactoryDependency *string `di.inject:"beanFactory"`
}
func (suite *TestSuite) TestInjectSlice() {
strings := []string{"string0", "string1"}
overwritten, err := RegisterBeanInstance("strings", &strings)
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
type BeanWithSlice struct {
strings *[]string `di.inject:"strings"`
}
overwritten, err = RegisterBean("beanWithSlice", reflect.TypeOf((*BeanWithSlice)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
beanWithSlice, err := GetInstanceSafe("beanWithSlice")
assert.NotNil(suite.T(), beanWithSlice)
assert.NoError(suite.T(), err)
stringsOfBean := beanWithSlice.(*BeanWithSlice).strings
assert.NotNil(suite.T(), stringsOfBean)
assert.Len(suite.T(), *stringsOfBean, 2)
assert.Equal(suite.T(), "string0", (*stringsOfBean)[0])
assert.Equal(suite.T(), "string1", (*stringsOfBean)[1])
}
func (suite *TestSuite) TestInjectMap() {
dict := map[string]string{"key0": "value0", "key1": "value1"}
overwritten, err := RegisterBeanInstance("dict", &dict)
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
type BeanWithMap struct {
dict *map[string]string `di.inject:"dict"`
}
overwritten, err = RegisterBean("beanWithMap", reflect.TypeOf((*BeanWithMap)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
beanWithMap, err := GetInstanceSafe("beanWithMap")
assert.NotNil(suite.T(), beanWithMap)
assert.NoError(suite.T(), err)
dictOfBean := beanWithMap.(*BeanWithMap).dict
assert.NotNil(suite.T(), dictOfBean)
assert.Len(suite.T(), *dictOfBean, 2)
assert.Equal(suite.T(), "value0", (*dictOfBean)["key0"])
assert.Equal(suite.T(), "value1", (*dictOfBean)["key1"])
}
func (suite *TestSuite) TestInjectBeanFactory() {
overwritten, err := RegisterBeanFactory("beanFactory", Singleton, func(context.Context) (interface{}, error) {
s := "test"
return &s, nil
})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("beanWithInjectedBeanFactory", reflect.TypeOf((*beanWithInjectedBeanFactory)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("beanWithInjectedBeanFactory")
assert.NotNil(suite.T(), instance)
assert.NoError(suite.T(), err)
beanWithInjectedBeanFactory := instance.(*beanWithInjectedBeanFactory)
assert.Equal(suite.T(), "test", *beanWithInjectedBeanFactory.BeanFactoryDependency)
}
func (suite *TestSuite) TestRegisterBeanFactoryWithOverwritingFromBeanToBeanFactory() {
type SingletonBean struct {
}
overwritten, err := RegisterBean("bean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBeanFactory("bean", Singleton, func(context.Context) (interface{}, error) {
s := "test_overwritten"
return &s, nil
})
assert.True(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("bean")
assert.NotNil(suite.T(), instance)
assert.NoError(suite.T(), err)
assert.Equal(suite.T(), "test_overwritten", *instance.(*string))
}
func (suite *TestSuite) TestRegisterBeanFactoryWithOverwritingFromPrototypeToSingletonScope() {
type PrototypeBean struct {
Scope Scope `di.scope:"prototype"`
}
overwritten, err := RegisterBean("bean", reflect.TypeOf((*PrototypeBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBeanFactory("bean", Singleton, func(context.Context) (interface{}, error) {
s := "test_overwritten"
return &s, nil
})
assert.True(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("bean")
assert.NotNil(suite.T(), instance)
assert.NoError(suite.T(), err)
assert.Equal(suite.T(), "test_overwritten", *instance.(*string))
instance2, err := GetInstanceSafe("bean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance2)
assert.True(suite.T(), instance == instance2)
}
func (suite *TestSuite) TestBeanFunction() {
overwritten, err := RegisterBeanFactory("beanFunction", Singleton, func(context.Context) (interface{}, error) {
f := func(x int) int {
return x + 42
}
return &f, nil
})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("beanFunction")
assert.NotNil(suite.T(), instance)
assert.NoError(suite.T(), err)
beanFunction := *instance.(*func(int) int)
assert.Equal(suite.T(), 43, beanFunction(1))
}
type failingSingletonBean struct {
}
func (*failingSingletonBean) PostConstruct() error {
return errors.New("error message")
}
func (suite *TestSuite) TestSingletonPostConstructReturnsError() {
overwritten, err := RegisterBean("failingSingletonBean", reflect.TypeOf((*failingSingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("error message")
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
type failingPrototypeBean struct {
Scope Scope `di.scope:"prototype"`
}
func (*failingPrototypeBean) PostConstruct() error {
return errors.New("error message")
}
func (suite *TestSuite) TestPrototypePostConstructReturnsError() {
overwritten, err := RegisterBean("failingPrototypeBean", reflect.TypeOf((*failingPrototypeBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
expectedError := errors.New("error message")
beanInstance, err := GetInstanceSafe("failingPrototypeBean")
assert.Nil(suite.T(), beanInstance)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
type postConstructBean1 struct {
Value string
}
func (pcb *postConstructBean1) PostConstruct() error {
pcb.Value = "some content"
return nil
}
type postConstructBean2 struct {
Scope Scope `di.scope:"prototype"`
PostConstructBean1 *postConstructBean1
}
func (pcb *postConstructBean2) PostConstruct() error {
instance, err := GetInstanceSafe("postConstructBean1")
if err != nil {
return err
}
pcb.PostConstructBean1 = instance.(*postConstructBean1)
return nil
}
type postConstructBean3 struct {
PostConstructBean2 *postConstructBean2
}
func (pcb *postConstructBean3) PostConstruct() error {
instance, err := GetInstanceSafe("postConstructBean2")
if err != nil {
return err
}
pcb.PostConstructBean2 = instance.(*postConstructBean2)
return nil
}
func (suite *TestSuite) TestPostConstruct() {
overwritten, err := RegisterBean("postConstructBean1", reflect.TypeOf((*postConstructBean1)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("postConstructBean2", reflect.TypeOf((*postConstructBean2)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("postConstructBean3", reflect.TypeOf((*postConstructBean3)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
assert.Equal(suite.T(), "some content", GetInstance("postConstructBean3").(*postConstructBean3).PostConstructBean2.PostConstructBean1.Value)
}
func (suite *TestSuite) TestBeanPostprocessorReturnsError() {
overwritten, err := RegisterBeanInstance("postprocessedBean", new(string))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("some error")
err = RegisterBeanPostprocessor(reflect.TypeOf((*string)(nil)), func(instance interface{}) error {
return expectedError
})
assert.Nil(suite.T(), err)
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
type postprocessedBean struct {
a string
b string
}
func (suite *TestSuite) TestBeanPostprocessors() {
overwritten, err := RegisterBean("postprocessedBean", reflect.TypeOf((*postprocessedBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = RegisterBeanPostprocessor(reflect.TypeOf((*postprocessedBean)(nil)), func(instance interface{}) error {
instance.(*postprocessedBean).a = "Hello, "
return nil
})
assert.Nil(suite.T(), err)
err = RegisterBeanPostprocessor(reflect.TypeOf((*postprocessedBean)(nil)), func(instance interface{}) error {
instance.(*postprocessedBean).b = "world!"
return nil
})
assert.Nil(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("postprocessedBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance)
postprocessedBean := instance.(*postprocessedBean)
assert.Equal(suite.T(), "Hello, world!", postprocessedBean.a+postprocessedBean.b)
}
type circularBean struct {
Scope Scope `di.scope:"prototype"`
CircularBean *circularBean `di.inject:"circularBean"`
}
func (suite *TestSuite) TestDirectCircularDependency() {
overwritten, err := RegisterBean("circularBean", reflect.TypeOf((*circularBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
expectedError := errors.New("circular dependency detected for bean: circularBean")
instance, err := GetInstanceSafe("circularBean")
assert.Nil(suite.T(), instance)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestInjectByTypeNoCandidatesMandatory() {
type OtherBean struct {
}
type SingletonBean struct {
OtherBean *OtherBean `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("no candidates found for the injection")
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestInjectByTypeNoCandidatesOptional() {
type OtherBean struct {
}
type SingletonBean struct {
OtherBean *OtherBean `di.inject:"" di.optional:"true"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.Nil(suite.T(), instance.(*SingletonBean).OtherBean)
}
func (suite *TestSuite) TestInjectByTypeMoreThanOneCandidate() {
type OtherBean struct {
}
type SingletonBean struct {
RequestBean *OtherBean `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBeanInstance("candidate1", &OtherBean{})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBeanInstance("candidate2", &OtherBean{})
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New("more then one candidate found for the injection")
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestInjectByTypeWithType() {
type OtherBean struct {
}
type SingletonBean struct {
OtherBean *OtherBean `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("otherBean", reflect.TypeOf((*OtherBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance.(*SingletonBean).OtherBean)
}
type someInterface interface {
someMethod()
}
type otherBean struct {
}
func (otherBean) someMethod() {
}
func (suite *TestSuite) TestInjectByTypeWithInterface() {
type SingletonBean struct {
otherBean someInterface `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("otherBean", reflect.TypeOf((*otherBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance.(*SingletonBean).otherBean)
}
func (suite *TestSuite) TestInjectByIDWithInterface() {
type SingletonBean struct {
otherBean someInterface `di.inject:"otherBean"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("otherBean", reflect.TypeOf((*otherBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance.(*SingletonBean).otherBean)
}
func (suite *TestSuite) TestInjectToSliceWithTypeNoCandidatesNotOptional() {
type OtherBean struct {
}
type SingletonBean struct {
OtherBeans []*OtherBean `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance.(*SingletonBean).OtherBeans)
assert.Len(suite.T(), instance.(*SingletonBean).OtherBeans, 0)
}
func (suite *TestSuite) TestInjectToSliceWithTypeNoCandidatesOptional() {
type OtherBean struct {
}
type SingletonBean struct {
OtherBeans []*OtherBean `di.inject:"" di.optional:"true"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.Nil(suite.T(), instance.(*SingletonBean).OtherBeans)
}
func (suite *TestSuite) TestInjectToSliceWithType() {
type OtherBean struct {
}
type SingletonBean struct {
OtherBeans []*OtherBean `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("otherBean", reflect.TypeOf((*OtherBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance.(*SingletonBean).OtherBeans)
assert.Len(suite.T(), instance.(*SingletonBean).OtherBeans, 1)
}
func (suite *TestSuite) TestInjectToSliceWithInterface() {
type SingletonBean struct {
otherBeans []someInterface `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("otherBean", reflect.TypeOf((*otherBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance.(*SingletonBean).otherBeans)
assert.Len(suite.T(), instance.(*SingletonBean).otherBeans, 1)
}
func (suite *TestSuite) TestInjectToMapWithTypeNoCandidatesNotOptional() {
type OtherBean struct {
}
type SingletonBean struct {
OtherBeans map[string]*OtherBean `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance.(*SingletonBean).OtherBeans)
assert.Len(suite.T(), instance.(*SingletonBean).OtherBeans, 0)
}
func (suite *TestSuite) TestInjectToMapWithTypeNoCandidatesOptional() {
type OtherBean struct {
}
type SingletonBean struct {
OtherBeans map[string]*OtherBean `di.inject:"" di.optional:"true"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.Nil(suite.T(), instance.(*SingletonBean).OtherBeans)
}
func (suite *TestSuite) TestInjectToMapWithType() {
type OtherBean struct {
}
type SingletonBean struct {
OtherBeans map[string]*OtherBean `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("otherBean", reflect.TypeOf((*OtherBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance.(*SingletonBean).OtherBeans)
assert.Len(suite.T(), instance.(*SingletonBean).OtherBeans, 1)
assert.NotNil(suite.T(), instance.(*SingletonBean).OtherBeans["otherBean"])
}
func (suite *TestSuite) TestInjectToMapWithInterface() {
type SingletonBean struct {
otherBeans map[string]someInterface `di.inject:""`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("otherBean", reflect.TypeOf((*otherBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
instance, err := GetInstanceSafe("singletonBean")
assert.NoError(suite.T(), err)
assert.NotNil(suite.T(), instance.(*SingletonBean).otherBeans)
assert.Len(suite.T(), instance.(*SingletonBean).otherBeans, 1)
assert.NotNil(suite.T(), instance.(*SingletonBean).otherBeans["otherBean"])
}
func (suite *TestSuite) TestInjectRequestBean() {
type RequestBean struct {
Scope Scope `di.scope:"request"`
}
type SingletonBean struct {
RequestBean *RequestBean `di.inject:"requestBean"`
}
overwritten, err := RegisterBean("singletonBean", reflect.TypeOf((*SingletonBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
overwritten, err = RegisterBean("requestBean", reflect.TypeOf((*RequestBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
expectedError := errors.New(requestScopedBeansCantBeInjected)
err = InitializeContainer()
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
}
func (suite *TestSuite) TestRequestBeanRetrieval() {
type RequestBean struct {
Scope Scope `di.scope:"request"`
}
overwritten, err := RegisterBean("requestBean", reflect.TypeOf((*RequestBean)(nil)))
assert.False(suite.T(), overwritten)
assert.NoError(suite.T(), err)
err = InitializeContainer()
assert.NoError(suite.T(), err)
expectedError := errors.New("request-scoped beans can't be retrieved directly from the container: they can only be retrieved from the web-context")
instance, err := GetInstanceSafe("requestBean")
assert.Nil(suite.T(), instance)
if assert.Error(suite.T(), err) {
assert.Equal(suite.T(), expectedError, err)
}
assert.Panics(suite.T(), func() {
GetInstance("requestBean")
})
}
func (suite *TestSuite) TestFailRequestBeanRetrieval() {