flutter::testing::ThreadCheckingAssetResolver Class Reference

Inheritance diagram for flutter::testing::ThreadCheckingAssetResolver:

Public Member Functions
	ThreadCheckingAssetResolver (std::shared_ptr< fml::ConcurrentMessageLoop > concurrent_loop)
bool	IsValid () const override
bool	IsValidAfterAssetManagerChange () const override
	Certain asset resolvers are still valid after the asset manager is replaced before a hot reload, or after a new run configuration is created during a hot restart. By preserving these resolvers and re-inserting them into the new resolver or run configuration, the tooling can avoid needing to sync all application assets through the Dart devFS upon connecting to the VM Service. Besides improving the startup performance of running a Flutter application, it also reduces the occurrence of tool failures due to repeated network flakes caused by damaged cables or hereto unknown bugs in the Dart HTTP server implementation.
AssetResolverType	GetType () const
	Gets the type of AssetResolver this is. Types are defined in AssetResolverType.
std::unique_ptr< fml::Mapping >	GetAsMapping (const std::string &asset_name) const override
bool	operator== (const AssetResolver &other) const override
Public Member Functions inherited from flutter::AssetResolver
	AssetResolver ()=default
virtual	~AssetResolver ()=default
virtual const AssetManager *	as_asset_manager () const
virtual const APKAssetProvider *	as_apk_asset_provider () const
virtual const DirectoryAssetBundle *	as_directory_asset_bundle () const
virtual std::vector< std::unique_ptr< fml::Mapping > >	GetAsMappings (const std::string &asset_pattern, const std::optional< std::string > &subdir) const
	Same as GetAsMapping() but returns mappings for all files who's name matches a given pattern. Returns empty vector if no matching assets are found.
bool	operator!= (const AssetResolver &other) const

Public Attributes
std::vector< std::string >	mapping_requests

Additional Inherited Members
Public Types inherited from flutter::AssetResolver
enum	AssetResolverType {   kAssetManager ,   kApkAssetProvider ,   kDirectoryAssetBundle }
	Identifies the type of AssetResolver an instance is. More...

Detailed Description

Definition at line 307 of file shell_unittests.cc.

Constructor & Destructor Documentation

ThreadCheckingAssetResolver()

flutter::testing::ThreadCheckingAssetResolver::ThreadCheckingAssetResolver ( std::shared_ptr< fml::ConcurrentMessageLoop >  concurrent_loop )

inlineexplicit

Definition at line 309 of file shell_unittests.cc.

      : concurrent_loop_(std::move(concurrent_loop)) {}

Member Function Documentation

GetAsMapping()

std::unique_ptr< fml::Mapping > flutter::testing::ThreadCheckingAssetResolver::GetAsMapping ( const std::string &  asset_name ) const

inlineoverridevirtual

Implements flutter::AssetResolver.

Definition at line 325 of file shell_unittests.cc.

                                                  {
    if (asset_name == "FontManifest.json" ||
        asset_name == "NativeAssetsManifest.json") {
      // This file is loaded directly by the engine.
      return nullptr;
    }
    mapping_requests.push_back(asset_name);
    EXPECT_TRUE(concurrent_loop_->RunsTasksOnCurrentThread())
        << fml::BacktraceHere();
    return nullptr;
  }

References fml::BacktraceHere(), and mapping_requests.

GetType()

AssetResolverType flutter::testing::ThreadCheckingAssetResolver::GetType ( ) const

inlinevirtual

Gets the type of AssetResolver this is. Types are defined in AssetResolverType.

Returns

Returns the AssetResolverType that this resolver is.

Implements flutter::AssetResolver.

Definition at line 320 of file shell_unittests.cc.

                                    {
    return AssetResolverType::kApkAssetProvider;
  }

References flutter::AssetResolver::kApkAssetProvider.

IsValid()

bool flutter::testing::ThreadCheckingAssetResolver::IsValid ( ) const

inlineoverridevirtual

Implements flutter::AssetResolver.

Definition at line 314 of file shell_unittests.cc.

{ return true; }

IsValidAfterAssetManagerChange()

bool flutter::testing::ThreadCheckingAssetResolver::IsValidAfterAssetManagerChange ( ) const

inlineoverridevirtual

Certain asset resolvers are still valid after the asset manager is replaced before a hot reload, or after a new run configuration is created during a hot restart. By preserving these resolvers and re-inserting them into the new resolver or run configuration, the tooling can avoid needing to sync all application assets through the Dart devFS upon connecting to the VM Service. Besides improving the startup performance of running a Flutter application, it also reduces the occurrence of tool failures due to repeated network flakes caused by damaged cables or hereto unknown bugs in the Dart HTTP server implementation.

Returns

Returns whether this resolver is valid after the asset manager or run configuration is updated.

Implements flutter::AssetResolver.

Definition at line 317 of file shell_unittests.cc.

{ return true; }

operator==()

bool flutter::testing::ThreadCheckingAssetResolver::operator== ( const AssetResolver &  other ) const

inlineoverridevirtual

Implements flutter::AssetResolver.

Definition at line 340 of file shell_unittests.cc.

                                                             {
    return this == &other;
  }

Member Data Documentation

mapping_requests

std::vector<std::string> flutter::testing::ThreadCheckingAssetResolver::mapping_requests

mutable

Definition at line 338 of file shell_unittests.cc.

Referenced by GetAsMapping().

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The documentation for this class was generated from the following file:

• shell/common/shell_unittests.cc