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# View Source eunit (eunit v2.9.1)

This module is the main EUnit user interface.

# Summary

## Functions

start()

Starts the EUnit server. Normally, you don't need to call this function; it is started automatically.

stop()

Stops the EUnit server. Normally, you don't need to call this function.

test(Tests)

Equivalent to `test(Tests, [])`.

test(Tests, Options)

Runs a set of tests. The format of `Tests` is described in the section EUnit test representation of the overview.

# Functions

# start()

    -spec start() -> term().

Starts the EUnit server. Normally, you don't need to call this function; it is started automatically.

# stop()

    -spec stop() -> term().

Stops the EUnit server. Normally, you don't need to call this function.

# test(Tests)

    -spec test(Tests :: term()) -> ok | {error, term()} | error.

Equivalent to `test(Tests, [])`.

# test(Tests, Options)

    -spec test(Tests :: term(), Options :: [term()]) -> ok | error | {error, term()}.

Runs a set of tests. The format of `Tests` is described in the section EUnit test representation of the overview.

Example:

      eunit:test(fred)

runs all tests in the module `fred` and also any tests in the module `fred_tests`, if that module exists.

Options:

- `verbose` - Displays more details about the running tests.

- `print_depth` - Maximum depth to which terms are printed in case of error.

- `exact_execution` - If this boolean flag is set to `true` framework will not automatically execute tests found in related module suffixed with "_tests". This behaviour might be unwanted if execution of modules found in a folder is ordered while it contains both source and test modules.

- `scale_timeouts` - If this numeric value is set, timeouts will get scaled accordingly. It may be useful when running a set of tests on a slower host. Examples: `{scale_timeouts,10}` make the timeouts 10 times longer, while `{scale_timeouts,0.1}` would shorten them by a factor of 10.

Options in the environment variable EUNIT are also included last in the option list, i.e., have lower precedence than those in `Options`.

See also: `test/1`.