unittest mock: provide way to refer to method calls in a rename friendly manner

[DartBot]

This issue was originally filed by @Andersmholmgren

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The unittest mock library uses strings to represent method calls. e.g.

foo.when(callsTo('fum')).thenReturn(...);

problem is when I want to rename fum then the IDE won't pick up my mocked method calls so I'll have to manually change them.

Issue #13056 would provide a solution. Another option is a mockito style approach which I would imagine could be implemented today using noSuchMethod. e.g.

when(foo.fum()).thenReturn(...);

or

foo.when((f) => foo.fum()).thenReturn(...); // i.e. when calls the function with a second impl of Foo that captures the behaviour. Assuming you can dynamically implement an interface

http://stackoverflow.com/questions/20768280/refactor-friendly-mocking-in-dart

[anders-sandholm]

Added Area-UnitTest, Triaged labels.

[DartBot]

This comment was originally written by @Andersmholmgren

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Added support for symbol literals for methods in dart-archive/bleeding_edge-DEPRECATED-USE-SDK-INSTEAD#8

[kevmoo]

Removed Area-UnitTest label.
Added Area-Pkg, Pkg-Unittest labels.

[kevmoo]

Removed Pkg-Unittest label.
Added Pkg-mock label.

[DartBot]

This issue has been moved to dart-archive/mock#4.