expect_snapshot_doc: Visual test for document

In doconv: Document Conversion to 'PDF' or 'PNG'

Visual test for document

Description

This expectation can be used with 'tinytest' and 'testthat' to check if a current document of type pdf, docx, doc, rtf, pptx or png matches a target document. When the expectation is checked for the first time, the expectation fails and a target miniature of the document is saved in a folder named _tinytest_doconv or _snaps.

Usage

expect_snapshot_doc(
  name,
  x,
  tolerance = 0.001,
  engine = c("tinytest", "testthat")
)

Arguments

name	a string to identify the test. Each document in the test suite must have a unique name.
x	file path of a document
tolerance	the ratio of different pixels that is acceptable before triggering a failure.
engine	test package being used in the test suite, one of "tinytest" or "testthat".

Value

A tinytest::tinytest() or a testthat::expect_snapshot_file object.

Examples

file <- system.file(package = "doconv",
  "doc-examples/example.docx")
## Not run: 
if (require("tinytest") && msoffice_available()){
  # first run add a new snapshot
  expect_snapshot_doc(x = file, name = "docx file", engine = "tinytest")
  # next runs compare with the snapshot
  expect_snapshot_doc(x = file, name = "docx file", engine = "tinytest")

  # cleaning directory
  unlink("_tinytest_doconv", recursive = TRUE, force = TRUE)
}
if (require("testthat") && msoffice_available()){
  local_edition(3)
  # first run add a new snapshot
  expect_snapshot_doc(x = file, name = "docx file", engine = "testthat")
  # next runs compare with the snapshot
  expect_snapshot_doc(x = file, name = "docx file", engine = "testthat")
}

## End(Not run)

doconv documentation built on Feb. 16, 2023, 8:31 p.m.