Specs

assert_eq(left :: any(), right :: any(), opts :: [assert_eq_opts()]) :: any()

Asserts that the left and right values are equal. Returns the left value unless the assertion fails, or if the :returning option is used. Uses assert left == right under the hood, but works nicely in a pipeline.

Options:

• ignore_order: boolean - if the left and right values are lists, ignores the order when checking equality.
• returning: value - returns value if the assertion passes, rather than returning the left value.
• within: delta - asserts that the left and right values are within delta of each other rather than strictly equal.
• within: {delta, time_unit} - like within: delta but performs time comparisons in the specified time_unit. If left and right are strings, they are parsed as ISO8601 dates.

Asserts that a NaiveDateTime or DateTime is no more than 30 seconds ago.

Specs

assert_that(any(), [{:changes, any()} | {:from, any()} | {:to, any()}, ...]) ::
  {:__block__, [], [...]}

Asserts a pre-condition and a post-condition are true after performing an action.

Examples

{:ok, agent} = Agent.start(fn -> 0 end)

assert_that(Agent.update(agent, fn s -> s + 1 end),
  changes: Agent.get(agent, fn s -> s end),
  from: 0,
  to: 1
)