narrow: validate spec files are well-formed during clone (BC)

Previously, specfiles would get read then normalized. We want
specfiles to be normalized on read so there is no confusion about
what the format of specfiles should be.

This commit validates the parsed result of --specfile. If entries
aren't prefixed, an error is raised.

Previously, validation would occur at exchange time, hence why we
dropped a line of test output related to server iteraction.

Differential Revision: https://phab.mercurial-scm.org/D4526

hgext/narrow/narrowcommands.py

@@ -102,6 +102,9 b' def clonenarrowcmd(orig, ui, repo, *args'
             raise error.Abort(_("cannot specify other files using '%include' in"
                                 " narrowspec"))
 
+        narrowspec.validatepatterns(includes)
+        narrowspec.validatepatterns(excludes)
+
         # narrowspec is passed so we should assume that user wants narrow clone
         opts_narrow = True
         opts['include'].extend(includes)

tests/test-narrow-clone-no-ellipsis.t

@@ -130,7 +130,7 b' Testing the --narrowspec flag to clone'
   > %include foo
   > [include]
   > path:dir/tests/
-  > file:dir/src/f12
+  > path:file:dir/src/f12
   > EOF
 
   $ hg clone ssh://user@dummy/master specfile --narrowspec narrowspecs
@@ -141,7 +141,7 b' Testing the --narrowspec flag to clone'
   $ cat > narrowspecs <<EOF
   > [include]
   > path:dir/tests/
-  > file:dir/src/f12
+  > path:file:dir/src/f12
   > EOF
 
   $ hg clone ssh://user@dummy/master specfile --narrowspec narrowspecs

tests/test-narrow-clone.t

@@ -239,7 +239,7 b' Testing the --narrowspec flag to clone'
   > %include foo
   > [include]
   > path:dir/tests/
-  > dir/src/f12
+  > path:file:dir/src/f12
   > EOF
 
   $ hg clone ssh://user@dummy/master specfile --narrowspec narrowspecs
@@ -250,7 +250,7 b' Testing the --narrowspec flag to clone'
   $ cat > narrowspecs <<EOF
   > [include]
   > path:dir/tests/
-  > file:dir/src/f12
+  > path:file:dir/src/f12
   > EOF
 
   $ hg clone ssh://user@dummy/master specfile --narrowspec narrowspecs
@@ -278,7 +278,6 b' Narrow spec with invalid patterns is rej'
 
   $ hg clone ssh://user@dummy/master badspecfile --narrowspec narrowspecs
   reading narrowspec from '$TESTTMP/narrowspecs'
-  requesting all changes
   abort: invalid prefix on narrow pattern: glob:**
   (narrow patterns must begin with one of the following: path:, rootfilesin:)
   [255]