feat(coverage): add default coverage include dir (denoland#21625)

cli/args/flags.rs

@@ -84,15 +84,16 @@ pub struct CompletionsFlags {
  pub buf: Box<[u8]>,
 }
 
-#[derive(Clone, Debug, Eq, PartialEq)]
+#[derive(Clone, Debug, Eq, PartialEq, Default)]
 pub enum CoverageType {
+ #[default]
  Summary,
  Detailed,
  Lcov,
  Html,
 }
 
-#[derive(Clone, Debug, Eq, PartialEq)]
+#[derive(Clone, Debug, Eq, PartialEq, Default)]
 pub struct CoverageFlags {
  pub files: FileFlags,
  pub output: Option<PathBuf>,
@@ -1422,10 +1423,9 @@ Generate html reports from lcov:
  )
  .arg(
  Arg::new("files")
- .num_args(1..)
+ .num_args(0..)
  .value_parser(value_parser!(PathBuf))
  .action(ArgAction::Append)
- .required(true)
  .value_hint(ValueHint::AnyPath),
  )
  })
@@ -3307,9 +3307,10 @@ fn completions_parse(
 }
 
 fn coverage_parse(flags: &mut Flags, matches: &mut ArgMatches) {
+ let default_files = vec![PathBuf::from("coverage")];
  let files = match matches.remove_many::<PathBuf>("files") {
  Some(f) => f.collect(),
- None => vec![],
+ None => default_files,
  };
  let ignore = match matches.remove_many::<PathBuf>("ignore") {
  Some(f) => f.collect(),
@@ -7914,10 +7915,9 @@ mod tests {
  include: vec![PathBuf::from("foo.json")],
  ignore: vec![],
  },
- output: None,
  include: vec![r"^file:".to_string()],
  exclude: vec![r"test\.(js|mjs|ts|jsx|tsx)$".to_string()],
- r#type: CoverageType::Summary
+ ..CoverageFlags::default()
  }),
  ..Flags::default()
  }
@@ -7950,6 +7950,27 @@ mod tests {
  }
  );
  }
+
+ #[test]
+ fn coverage_with_default_files() {
+ let r = flags_from_vec(svec!["deno", "coverage",]);
+ assert_eq!(
+ r.unwrap(),
+ Flags {
+ subcommand: DenoSubcommand::Coverage(CoverageFlags {
+ files: FileFlags {
+ include: vec![PathBuf::from("coverage")],
+ ignore: vec![],
+ },
+ include: vec![r"^file:".to_string()],
+ exclude: vec![r"test\.(js|mjs|ts|jsx|tsx)$".to_string()],
+ ..CoverageFlags::default()
+ }),
+ ..Flags::default()
+ }
+ );
+ }
+
  #[test]
  fn location_with_bad_scheme() {
  #[rustfmt::skip]