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Configures the mock implementation of $exceptionHandler to rethrow or to log errors passed to the $exceptionHandler.

Sets the logging mode.

Param Type Details

mode

Param	Type	Details
mode	`string`	Mode of operation, defaults to `rethrow`. `log`: Sometimes it is desirable to test that an error is thrown, for this case the `log` mode stores an array of errors in `$exceptionHandler.errors`, to allow later assertion of them. See assertEmpty() and reset(). `rethrow`: If any errors are passed to the handler in tests, it typically means that there is a bug in the application or test, so this mock will make these tests fail. For any implementations that expect exceptions to be thrown, the `rethrow` mode will also maintain a log of thrown errors in `$exceptionHandler.errors`.

string

Mode of operation, defaults to rethrow.

log: Sometimes it is desirable to test that an error is thrown, for this case the log mode stores an array of errors in $exceptionHandler.errors, to allow later assertion of them. See assertEmpty() and reset().
rethrow: If any errors are passed to the handler in tests, it typically means that there is a bug in the application or test, so this mock will make these tests fail. For any implementations that expect exceptions to be thrown, the rethrow mode will also maintain a log of thrown errors in $exceptionHandler.errors.

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https://code.angularjs.org/1.5.11/docs/api/ngMock/provider/$exceptionHandlerProvider