@@ -681,31 +681,6 @@ impl Ord for SourceKind {
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}
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}
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- // This is a test that the hash of the `SourceId` for crates.io is a well-known
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- // value.
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- //
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- // Note that the hash value matches what the crates.io source id has hashed
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- // since long before Rust 1.30. We strive to keep this value the same across
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- // versions of Cargo because changing it means that users will need to
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- // redownload the index and all crates they use when using a new Cargo version.
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- //
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- // This isn't to say that this hash can *never* change, only that when changing
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- // this it should be explicitly done. If this hash changes accidentally and
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- // you're able to restore the hash to its original value, please do so!
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- // Otherwise please just leave a comment in your PR as to why the hash value is
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- // changing and why the old value can't be easily preserved.
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- //
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- // The hash value depends on endianness and bit-width, so we only run this test on
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- // little-endian 64-bit CPUs (such as x86-64 and ARM64) where it matches the
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- // well-known value.
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- #[ test]
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- #[ cfg( all( target_endian = "little" , target_pointer_width = "64" ) ) ]
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- fn test_cratesio_hash ( ) {
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- let config = Config :: default ( ) . unwrap ( ) ;
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- let crates_io = SourceId :: crates_io ( & config) . unwrap ( ) ;
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- assert_eq ! ( crate :: util:: hex:: short_hash( & crates_io) , "1ecc6299db9ec823" ) ;
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- }
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-
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/// A `Display`able view into a `SourceId` that will write it as a url
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pub struct SourceIdAsUrl < ' a > {
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inner : & ' a SourceIdInner ,
@@ -792,7 +767,7 @@ impl<'a> fmt::Display for PrettyRef<'a> {
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#[ cfg( test) ]
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mod tests {
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use super :: { GitReference , SourceId , SourceKind } ;
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- use crate :: util:: IntoUrl ;
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+ use crate :: util:: { Config , IntoUrl } ;
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#[ test]
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fn github_sources_equal ( ) {
@@ -809,4 +784,84 @@ mod tests {
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let s3 = SourceId :: new ( foo, loc, None ) . unwrap ( ) ;
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assert_ne ! ( s1, s3) ;
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}
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+
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+ // This is a test that the hash of the `SourceId` for crates.io is a well-known
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+ // value.
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+ //
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+ // Note that the hash value matches what the crates.io source id has hashed
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+ // since long before Rust 1.30. We strive to keep this value the same across
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+ // versions of Cargo because changing it means that users will need to
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+ // redownload the index and all crates they use when using a new Cargo version.
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+ //
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+ // This isn't to say that this hash can *never* change, only that when changing
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+ // this it should be explicitly done. If this hash changes accidentally and
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+ // you're able to restore the hash to its original value, please do so!
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+ // Otherwise please just leave a comment in your PR as to why the hash value is
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+ // changing and why the old value can't be easily preserved.
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+ //
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+ // The hash value depends on endianness and bit-width, so we only run this test on
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+ // little-endian 64-bit CPUs (such as x86-64 and ARM64) where it matches the
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+ // well-known value.
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+ #[ test]
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+ #[ cfg( all( target_endian = "little" , target_pointer_width = "64" ) ) ]
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+ fn test_cratesio_hash ( ) {
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+ let config = Config :: default ( ) . unwrap ( ) ;
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+ let crates_io = SourceId :: crates_io ( & config) . unwrap ( ) ;
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+ assert_eq ! ( crate :: util:: hex:: short_hash( & crates_io) , "1ecc6299db9ec823" ) ;
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+ }
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+
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+ // See the comment in `test_cratesio_hash`.
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+ //
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+ // Only test on non-Windows as paths on Windows will get different hashes.
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+ #[ test]
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+ #[ cfg( all( target_endian = "little" , target_pointer_width = "64" , not( windows) ) ) ]
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+ fn test_stable_hash ( ) {
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+ use std:: hash:: Hasher ;
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+ use std:: path:: Path ;
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+
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+ let gen_hash = |source_id : SourceId | {
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+ let mut hasher = std:: collections:: hash_map:: DefaultHasher :: new ( ) ;
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+ source_id. stable_hash ( Path :: new ( "/tmp/ws" ) , & mut hasher) ;
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+ hasher. finish ( )
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+ } ;
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+
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+ let url = "https://my-crates.io" . into_url ( ) . unwrap ( ) ;
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+ let source_id = SourceId :: for_registry ( & url) . unwrap ( ) ;
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+ assert_eq ! ( gen_hash( source_id) , 18108075011063494626 ) ;
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+ assert_eq ! ( crate :: util:: hex:: short_hash( & source_id) , "fb60813d6cb8df79" ) ;
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+
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+ let url = "https://your-crates.io" . into_url ( ) . unwrap ( ) ;
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+ let source_id = SourceId :: for_alt_registry ( & url, "alt" ) . unwrap ( ) ;
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+ assert_eq ! ( gen_hash( source_id) , 12862859764592646184 ) ;
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+ assert_eq ! ( crate :: util:: hex:: short_hash( & source_id) , "09c10fd0cbd74bce" ) ;
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+
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+ let url = "sparse+https://my-crates.io" . into_url ( ) . unwrap ( ) ;
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+ let source_id = SourceId :: for_registry ( & url) . unwrap ( ) ;
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+ assert_eq ! ( gen_hash( source_id) , 8763561830438022424 ) ;
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+ assert_eq ! ( crate :: util:: hex:: short_hash( & source_id) , "d1ea0d96f6f759b5" ) ;
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+
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+ let url = "sparse+https://your-crates.io" . into_url ( ) . unwrap ( ) ;
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+ let source_id = SourceId :: for_alt_registry ( & url, "alt" ) . unwrap ( ) ;
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+ assert_eq ! ( gen_hash( source_id) , 5159702466575482972 ) ;
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+ assert_eq ! ( crate :: util:: hex:: short_hash( & source_id) , "135d23074253cb78" ) ;
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+
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+ let url = "file:///tmp/ws/crate" . into_url ( ) . unwrap ( ) ;
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+ let source_id = SourceId :: for_git ( & url, GitReference :: DefaultBranch ) . unwrap ( ) ;
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+ assert_eq ! ( gen_hash( source_id) , 15332537265078583985 ) ;
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+ assert_eq ! ( crate :: util:: hex:: short_hash( & source_id) , "73a808694abda756" ) ;
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+
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+ let path = Path :: new ( "/tmp/ws/crate" ) ;
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+
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+ let source_id = SourceId :: for_local_registry ( path) . unwrap ( ) ;
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+ assert_eq ! ( gen_hash( source_id) , 18446533307730842837 ) ;
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+ assert_eq ! ( crate :: util:: hex:: short_hash( & source_id) , "52a84cc73f6fd48b" ) ;
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+
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+ let source_id = SourceId :: for_path ( path) . unwrap ( ) ;
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+ assert_eq ! ( gen_hash( source_id) , 8764714075439899829 ) ;
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+ assert_eq ! ( crate :: util:: hex:: short_hash( & source_id) , "e1ddd48578620fc1" ) ;
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+
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+ let source_id = SourceId :: for_directory ( path) . unwrap ( ) ;
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+ assert_eq ! ( gen_hash( source_id) , 17459999773908528552 ) ;
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+ assert_eq ! ( crate :: util:: hex:: short_hash( & source_id) , "6568fe2c2fab5bfe" ) ;
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+ }
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}
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