# HG changeset patch
# User Pulkit Goyal <7895pulkit@gmail.com>
# Date 2020-04-14 11:36:11
# Node ID 4a28f5e8408e57be9d55496c628254b5a12393a6
# Parent  a03c177a46792b1f87a2eea4e35a943256c3c488

debugcommands: introduce new debugrequirements command

This for now just prints out the list of current requirements. In future this
will be helpful in reading requirements from couple of sources, and checking
which requirement comes from where.

Differential Revision: https://phab.mercurial-scm.org/D8632

diff --git a/mercurial/debugcommands.py b/mercurial/debugcommands.py
--- a/mercurial/debugcommands.py
+++ b/mercurial/debugcommands.py
@@ -2651,6 +2651,13 @@ def debugrename(ui, repo, *pats, **opts)
             ui.write(_(b"%s not renamed\n") % rel)
 
 
+@command(b'debugrequires|debugrequirements', [], b'')
+def debugrequirements(ui, repo):
+    """ print the current repo requirements """
+    for r in sorted(repo.requirements):
+        ui.write(b"%s\n" % r)
+
+
 @command(
     b'debugrevlog',
     cmdutil.debugrevlogopts + [(b'd', b'dump', False, _(b'dump index data'))],
diff --git a/tests/test-completion.t b/tests/test-completion.t
--- a/tests/test-completion.t
+++ b/tests/test-completion.t
@@ -121,6 +121,7 @@ Show debug commands if there are no othe
   debugrebuilddirstate
   debugrebuildfncache
   debugrename
+  debugrequires
   debugrevlog
   debugrevlogindex
   debugrevspec
@@ -306,6 +307,7 @@ Show all commands + options
   debugrebuilddirstate: rev, minimal
   debugrebuildfncache: 
   debugrename: rev
+  debugrequires: 
   debugrevlog: changelog, manifest, dir, dump
   debugrevlogindex: changelog, manifest, dir, format
   debugrevspec: optimize, show-revs, show-set, show-stage, no-optimized, verify-optimized
diff --git a/tests/test-help.t b/tests/test-help.t
--- a/tests/test-help.t
+++ b/tests/test-help.t
@@ -1051,6 +1051,8 @@ Test list of internal help commands
    debugrebuildfncache
                  rebuild the fncache file
    debugrename   dump rename information
+   debugrequires
+                 print the current repo requirements
    debugrevlog   show data and statistics about a revlog
    debugrevlogindex
                  dump the contents of a revlog index
diff --git a/tests/test-requires.t b/tests/test-requires.t
--- a/tests/test-requires.t
+++ b/tests/test-requires.t
@@ -48,6 +48,14 @@ another repository of push/pull/clone on
   > # enable extension locally
   > supportlocally = $TESTTMP/supported-locally/supportlocally.py
   > EOF
+  $ hg -R supported debugrequirements
+  dotencode
+  featuresetup-test
+  fncache
+  generaldelta
+  revlogv1
+  sparserevlog
+  store
   $ hg -R supported status
 
   $ hg init push-dst