covr-rendering-single: Rendering for single file report
In testextra: Extract Test Blocks

These functions facilitate the creation of reports for coverage of a single file.

.renderSourceRow(line, source, coverage)

.renderSourceFile(lines, file = "source", highlight = TRUE)

.single_file_summary(file_stats)

.renderReport(coverage, report.file, dir = dirname(report.file),
  libdir = file.path(dir, "lib"))

`line, lines`	Line(s) number
`source`	source file
`coverage`	The number of times covered
`file`	the file in question
`highlight`	Highlight the row.
`file_stats`	The coverage object for the file.
`report.file`	Where to output the HTML report.
`dir`	the base directory for the HTML output
`libdir`	Where to put html dependencies?