expect-no-condition.md
In testthat: Unit Testing for R

expect_no_* conditions behave as expected

Expected `stop("error")` to run without any errors.
i Actually got a <simpleError> with text:
  error

Expected `warning("warning")` to run without any warnings.
i Actually got a <simpleWarning> with text:
  warning

Expected `message("message")` to run without any messages.
i Actually got a <simpleMessage> with text:
  message

Expected `abort("error")` to run without any errors.
i Actually got a <rlang_error> with text:
  error

Expected `warn("warning")` to run without any warnings.
i Actually got a <rlang_warning> with text:
  warning

Expected `inform("message")` to run without any messages.
i Actually got a <rlang_message> with text:
  message

matched conditions give informative message

Code
  expect_no_warning(foo())
Condition
  Error:
  ! Expected `foo()` to run without any warnings.
  i Actually got a <test> with text:
    This is a problem!
Code
  expect_no_warning(foo(), message = "problem")
Condition
  Error:
  ! Expected `foo()` to run without any warnings matching pattern 'problem'.
  i Actually got a <test> with text:
    This is a problem!
Code
  expect_no_warning(foo(), class = "test")
Condition
  Error:
  ! Expected `foo()` to run without any warnings of class 'test'.
  i Actually got a <test> with text:
    This is a problem!
Code
  expect_no_warning(foo(), message = "problem", class = "test")
Condition
  Error:
  ! Expected `foo()` to run without any warnings of class 'test' matching pattern 'problem'.
  i Actually got a <test> with text:
    This is a problem!