R: Does code return a reference to the expected object?

expect_reference {testthat} | R Documentation

## Does code return a reference to the expected object?

### Description

`expect_reference()` compares the underlying memory addresses of two symbols. It is for expert use only.

### Usage

    expect_reference(
      object,
      expected,
      info = NULL,
      label = NULL,
      expected.label = NULL
    )

### Arguments

`object` | Computation and value to compare it to. Both arguments supports limited unquoting to make it easier to generate readable failures within a function or for loop. See quasi_label for more details.
`expected` | Computation and value to compare it to. Both arguments supports limited unquoting to make it easier to generate readable failures within a function or for loop. See quasi_label for more details.
`info` | Extra information to be included in the message. This argument is soft-deprecated and should not be used in new code. Instead see alternatives in quasi_label.
`label` | Used to customise failure messages. For expert use only.
`expected.label` | Used to customise failure messages. For expert use only.

### 3rd edition

`expect_reference()` is deprecated in the third edition. If you know what you're doing, and you really need this behaviour, just use `is_reference()` directly: `expect_true(rlang::is_reference(x, y))`.

### See Also

Other expectations: `comparison-expectations`, `equality-expectations`, `expect_error()`, `expect_length()`, `expect_match()`, `expect_named()`, `expect_null()`, `expect_output()`, `expect_silent()`, `inheritance-expectations`, `logical-expectations`

[Package testthat version 3.0.3 Index]