expect_identical_linter

At Google, <code><a href="https://testthat.r-lib.org/reference/equality-expectations.html">testthat::expect_identical()</a></code> should be the default/go-to function for
comparing an output to an expected value. <code>expect_true(identical(x, y))</code>
is an equivalent but unadvised method of the same test. Further,
<code><a href="https://testthat.r-lib.org/reference/equality-expectations.html">testthat::expect_equal()</a></code> should only be used when <code>expect_identical()</code>
is inappropriate, i.e., when <code>x</code> and <code>y</code> need only be numerically
equivalent instead of fully identical (in which case, provide the
<code>tolerance=</code> argument to <code>expect_equal()</code> explicitly). This also applies
when it's inconvenient to check full equality (e.g., names can be ignored,
in which case <code>ignore_attr = "names"</code> should be supplied to
<code>expect_equal()</code> (or, for 2nd edition, <code>check.attributes = FALSE</code>).

Checks adherence to a given style, syntax errors and possible
semantic issues.  Supports on the fly checking of R code edited with
'RStudio IDE', 'Emacs', 'Vim', 'Sublime Text', 'Atom' and 'Visual
Studio Code'.

Jim Hester

lintr

A 'Linter' for R Code

Florent Angly

Russ Hyde

Michael Chirico

Kun Ren

Alexander Rosenstock

Indrajeet Patil

expect_identical_linter function

The linter allows <code>expect_equal()</code> in three circumstances:<ol>
<li>A named argument is set (e.g. <code>ignore_attr</code> or <code>tolerance</code>)</li>
<li>Comparison is made to an explicit decimal, e.g.
<code>expect_equal(x, 1.0)</code> (implicitly setting <code>tolerance</code>)</li>
<li><code>...</code> is passed (wrapper functions whcih might set
arguments such as <code>ignore_attr</code> or <code>tolerance</code>)</li>
</ol>

Exceptions

Tags

At Google, <code><a href='https://testthat.r-lib.org/reference/equality-expectations.html'>testthat::expect_identical()</a></code> should be the default/go-to function for
comparing an output to an expected value. <code>expect_true(identical(x, y))</code>
is an equivalent but unadvised method of the same test. Further,
<code><a href='https://testthat.r-lib.org/reference/equality-expectations.html'>testthat::expect_equal()</a></code> should only be used when <code>expect_identical()</code>
is inappropriate, i.e., when <code>x</code> and <code>y</code> need only be numerically
equivalent instead of fully identical (in which case, provide the
<code>tolerance=</code> argument to <code>expect_equal()</code> explicitly). This also applies
when it's inconvenient to check full equality (e.g., names can be ignored,
in which case <code>ignore_attr = "names"</code> should be supplied to
<code>expect_equal()</code> (or, for 2nd edition, <code>check.attributes = FALSE</code>).

Require usage of expect_identical(x, y) where appropriate — expect_identical_linter

The linter allows <code>expect_equal()</code> in three circumstances:<ol>
<li>A named argument is set (e.g. <code>ignore_attr</code> or <code>tolerance</code>)</li>
<li>Comparison is made to an explicit decimal, e.g.
<code>expect_equal(x, 1.0)</code> (implicitly setting <code>tolerance</code>)</li>
<li><code>...</code> is passed (wrapper functions whcih might set
arguments such as <code>ignore_attr</code> or <code>tolerance</code>)</li>
</ol>

expect_identical_linter: Require usage of expect_identical(x, y) where appropriate

Description

Usage

Arguments

Exceptions

Tags

See Also