patman: Support listing comments from patchwork

While reviewing feedback it is helpful to see the review comments on the
command line to check that each has been addressed. Add an option to
support that.

Update the workflow documentation to describe the new features.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/patman/func_test.py b/tools/patman/func_test.py
index bbee4b7..e2adf32 100644
--- a/tools/patman/func_test.py
+++ b/tools/patman/func_test.py
@@ -857,15 +857,16 @@
         self.patches = [patch1, patch2]
         count = 2
         new_rtag_list = [None] * count
+        review_list = [None, None]
 
         # Check that the tags are picked up on the first patch
-        status.find_new_responses(new_rtag_list, 0, commit1, patch1,
-                                  self._fake_patchwork2)
+        status.find_new_responses(new_rtag_list, review_list, 0, commit1,
+                                  patch1, self._fake_patchwork2)
         self.assertEqual(new_rtag_list[0], {'Reviewed-by': {self.joe}})
 
         # Now the second patch
-        status.find_new_responses(new_rtag_list, 1, commit2, patch2,
-                                  self._fake_patchwork2)
+        status.find_new_responses(new_rtag_list, review_list, 1, commit2,
+                                  patch2, self._fake_patchwork2)
         self.assertEqual(new_rtag_list[1], {
             'Reviewed-by': {self.mary, self.fred},
             'Tested-by': {self.leb}})
@@ -874,16 +875,16 @@
         # 'new' tags when scanning comments
         new_rtag_list = [None] * count
         commit1.rtags = {'Reviewed-by': {self.joe}}
-        status.find_new_responses(new_rtag_list, 0, commit1, patch1,
-                                  self._fake_patchwork2)
+        status.find_new_responses(new_rtag_list, review_list, 0, commit1,
+                                  patch1, self._fake_patchwork2)
         self.assertEqual(new_rtag_list[0], {})
 
         # For the second commit, add Ed and Fred, so only Mary should be left
         commit2.rtags = {
             'Tested-by': {self.leb},
             'Reviewed-by': {self.fred}}
-        status.find_new_responses(new_rtag_list, 1, commit2, patch2,
-                                  self._fake_patchwork2)
+        status.find_new_responses(new_rtag_list, review_list, 1, commit2,
+                                  patch2, self._fake_patchwork2)
         self.assertEqual(new_rtag_list[1], {'Reviewed-by': {self.mary}})
 
         # Check that the output patches expectations:
@@ -898,7 +899,7 @@
         series = Series()
         series.commits = [commit1, commit2]
         terminal.SetPrintTestMode()
-        status.check_patchwork_status(series, '1234', None, None, False,
+        status.check_patchwork_status(series, '1234', None, None, False, False,
                                       self._fake_patchwork2)
         lines = iter(terminal.GetPrintTestLines())
         col = terminal.Color()
@@ -914,18 +915,18 @@
         self.assertEqual(terminal.PrintLine('  2 Subject 2', col.BLUE),
                          next(lines))
         self.assertEqual(
-            terminal.PrintLine('    Tested-by: ', col.GREEN, newline=False,
-                               bright=False),
-            next(lines))
-        self.assertEqual(terminal.PrintLine(self.leb, col.WHITE, bright=False),
-                         next(lines))
-        self.assertEqual(
             terminal.PrintLine('    Reviewed-by: ', col.GREEN, newline=False,
                                bright=False),
             next(lines))
         self.assertEqual(terminal.PrintLine(self.fred, col.WHITE, bright=False),
                          next(lines))
         self.assertEqual(
+            terminal.PrintLine('    Tested-by: ', col.GREEN, newline=False,
+                               bright=False),
+            next(lines))
+        self.assertEqual(terminal.PrintLine(self.leb, col.WHITE, bright=False),
+                         next(lines))
+        self.assertEqual(
             terminal.PrintLine('  + Reviewed-by: ', col.GREEN, newline=False),
             next(lines))
         self.assertEqual(terminal.PrintLine(self.mary, col.WHITE),
@@ -1010,7 +1011,7 @@
 
         terminal.SetPrintTestMode()
         status.check_patchwork_status(series, '1234', branch, dest_branch,
-                                      False, self._fake_patchwork3, repo)
+                                      False, False, self._fake_patchwork3, repo)
         lines = terminal.GetPrintTestLines()
         self.assertEqual(12, len(lines))
         self.assertEqual(
@@ -1044,6 +1045,7 @@
         self.assertEqual('Reviewed-by: %s' % self.mary, next(lines))
         self.assertEqual('Tested-by: %s' % self.leb, next(lines))
 
+    @unittest.skipIf(not HAVE_PYGIT2, 'Missing python3-pygit2')
     def testParseSnippets(self):
         """Test parsing of review snippets"""
         text = '''Hi Fred,
@@ -1126,3 +1128,159 @@
               'now a very long comment in a different file',
               'line2', 'line3', 'line4', 'line5', 'line6', 'line7', 'line8']],
             pstrm.snippets)
+
+    @unittest.skipIf(not HAVE_PYGIT2, 'Missing python3-pygit2')
+    def testReviewSnippets(self):
+        """Test showing of review snippets"""
+        def _to_submitter(who):
+            m_who = re.match('(.*) <(.*)>', who)
+            return {
+                'name': m_who.group(1),
+                'email': m_who.group(2)
+                }
+
+        commit1 = Commit('abcd')
+        commit1.subject = 'Subject 1'
+        commit2 = Commit('ef12')
+        commit2.subject = 'Subject 2'
+
+        patch1 = status.Patch('1')
+        patch1.parse_subject('[1/2] Subject 1')
+        patch1.name = patch1.raw_subject
+        patch1.content = 'This is my patch content'
+        comment1a = {'submitter': _to_submitter(self.joe),
+                     'content': '''Hi Fred,
+
+On some date Fred wrote:
+
+> diff --git a/file.c b/file.c
+> Some code
+> and more code
+
+Here is my comment above the above...
+
+
+Reviewed-by: %s
+''' % self.joe}
+
+        patch1.comments = [comment1a]
+
+        patch2 = status.Patch('2')
+        patch2.parse_subject('[2/2] Subject 2')
+        patch2.name = patch2.raw_subject
+        patch2.content = 'Some other patch content'
+        comment2a = {
+            'content': 'Reviewed-by: %s\nTested-by: %s\n' %
+                       (self.mary, self.leb)}
+        comment2b = {'submitter': _to_submitter(self.fred),
+                     'content': '''Hi Fred,
+
+On some date Fred wrote:
+
+> diff --git a/tools/patman/commit.py b/tools/patman/commit.py
+> @@ -41,6 +41,9 @@ class Commit:
+>          self.rtags = collections.defaultdict(set)
+>          self.warn = []
+>
+> +    def __str__(self):
+> +        return self.subject
+> +
+>      def AddChange(self, version, info):
+>          """Add a new change line to the change list for a version.
+>
+A comment
+
+Reviewed-by: %s
+''' % self.fred}
+        patch2.comments = [comment2a, comment2b]
+
+        # This test works by setting up commits and patch for use by the fake
+        # Rest API function _fake_patchwork2(). It calls various functions in
+        # the status module after setting up tags in the commits, checking that
+        # things behaves as expected
+        self.commits = [commit1, commit2]
+        self.patches = [patch1, patch2]
+
+        # Check that the output patches expectations:
+        #   1 Subject 1
+        #     Reviewed-by: Joe Bloggs <joe@napierwallies.co.nz>
+        #   2 Subject 2
+        #     Tested-by: Lord Edmund Blackaddër <weasel@blackadder.org>
+        #     Reviewed-by: Fred Bloggs <f.bloggs@napier.net>
+        #   + Reviewed-by: Mary Bloggs <mary@napierwallies.co.nz>
+        # 1 new response available in patchwork
+
+        series = Series()
+        series.commits = [commit1, commit2]
+        terminal.SetPrintTestMode()
+        status.check_patchwork_status(series, '1234', None, None, False, True,
+                                      self._fake_patchwork2)
+        lines = iter(terminal.GetPrintTestLines())
+        col = terminal.Color()
+        self.assertEqual(terminal.PrintLine('  1 Subject 1', col.BLUE),
+                         next(lines))
+        self.assertEqual(
+            terminal.PrintLine('  + Reviewed-by: ', col.GREEN, newline=False),
+            next(lines))
+        self.assertEqual(terminal.PrintLine(self.joe, col.WHITE), next(lines))
+
+        self.assertEqual(terminal.PrintLine('Review: %s' % self.joe, col.RED),
+                         next(lines))
+        self.assertEqual(terminal.PrintLine('    Hi Fred,', None), next(lines))
+        self.assertEqual(terminal.PrintLine('', None), next(lines))
+        self.assertEqual(terminal.PrintLine('    > File: file.c', col.MAGENTA),
+                         next(lines))
+        self.assertEqual(terminal.PrintLine('    > Some code', col.MAGENTA),
+                         next(lines))
+        self.assertEqual(terminal.PrintLine('    > and more code', col.MAGENTA),
+                         next(lines))
+        self.assertEqual(terminal.PrintLine(
+            '    Here is my comment above the above...', None), next(lines))
+        self.assertEqual(terminal.PrintLine('', None), next(lines))
+
+        self.assertEqual(terminal.PrintLine('  2 Subject 2', col.BLUE),
+                         next(lines))
+        self.assertEqual(
+            terminal.PrintLine('  + Reviewed-by: ', col.GREEN, newline=False),
+            next(lines))
+        self.assertEqual(terminal.PrintLine(self.fred, col.WHITE),
+                         next(lines))
+        self.assertEqual(
+            terminal.PrintLine('  + Reviewed-by: ', col.GREEN, newline=False),
+            next(lines))
+        self.assertEqual(terminal.PrintLine(self.mary, col.WHITE),
+                         next(lines))
+        self.assertEqual(
+            terminal.PrintLine('  + Tested-by: ', col.GREEN, newline=False),
+            next(lines))
+        self.assertEqual(terminal.PrintLine(self.leb, col.WHITE),
+                         next(lines))
+
+        self.assertEqual(terminal.PrintLine('Review: %s' % self.fred, col.RED),
+                         next(lines))
+        self.assertEqual(terminal.PrintLine('    Hi Fred,', None), next(lines))
+        self.assertEqual(terminal.PrintLine('', None), next(lines))
+        self.assertEqual(terminal.PrintLine(
+            '    > File: tools/patman/commit.py', col.MAGENTA), next(lines))
+        self.assertEqual(terminal.PrintLine(
+            '    > Line: 41 / 41: class Commit:', col.MAGENTA), next(lines))
+        self.assertEqual(terminal.PrintLine(
+            '    > +        return self.subject', col.MAGENTA), next(lines))
+        self.assertEqual(terminal.PrintLine(
+            '    > +', col.MAGENTA), next(lines))
+        self.assertEqual(
+            terminal.PrintLine('    >      def AddChange(self, version, info):',
+                               col.MAGENTA),
+            next(lines))
+        self.assertEqual(terminal.PrintLine(
+            '    >          """Add a new change line to the change list for a version.',
+            col.MAGENTA), next(lines))
+        self.assertEqual(terminal.PrintLine(
+            '    >', col.MAGENTA), next(lines))
+        self.assertEqual(terminal.PrintLine(
+            '    A comment', None), next(lines))
+        self.assertEqual(terminal.PrintLine('', None), next(lines))
+
+        self.assertEqual(terminal.PrintLine(
+            '4 new responses available in patchwork (use -d to write them to a new branch)',
+            None), next(lines))