view tests/test-diff-issue2761.t @ 43380:579672b347d2 stable

py3: define and use json.loads polyfill

Python 3.5's json.loads() requires a str. Only Python 3.6+
supports passing a bytes or bytearray.

This commit implements a json.loads() polyfill on Python 3.5
so that we can use bytes. The added function to detect encodings
comes verbatim from Python 3.7.

Test issue2761

  $ hg init

  $ touch to-be-deleted
  $ hg add
  adding to-be-deleted
  $ hg ci -m first
  $ echo a > to-be-deleted
  $ hg ci -m second
  $ rm to-be-deleted
  $ hg diff -r 0

Same issue, different code path

  $ hg up -C
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ touch does-not-exist-in-1
  $ hg add
  adding does-not-exist-in-1
  $ hg ci -m third
  $ rm does-not-exist-in-1
  $ hg diff -r 1