Generate coverage without deno test

[szmarczak]

Is it possible to generate coverage without deno test but with deno run? This would enable generating coverages for custom test runners.

[szmarczak]

Related: https://www.reddit.com/r/Deno/comments/13qqbyv/how_to_generate_coverage_with_deno_run/

[bartlomieju]

DENO_UNSTABLE_COVERAGE_DIR is the way to go here, though as the name suggests it's not stabilized, but we haven't changed the behavior of this env var in a couple years.

[szmarczak]

Doesn't it require to be ran via deno test?

deno/cli/args/mod.rs

Lines 1463 to 1472 in 0a30897

	pub fn coverage_dir(&self) -> Option<String> {
	match &self.flags.subcommand {
	DenoSubcommand::Test(test) => test
	.coverage_dir
	.as_ref()
	.map(ToOwned::to_owned)
	.or_else(|| env::var("DENO_UNSTABLE_COVERAGE_DIR").ok()),
	_ => None,
	}
	}

[bartlomieju]

Ah good point, I missed that. Then appears it's not possible at the moment, but seems like a reasonable feature. PRs are welcome.

[kt3k]

This issue seems the same as #16440. Let's track in there.