From 3bb77da9e74e2ea83f07c109aa017c0bad0c2fdd Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Sat, 27 Aug 2022 11:20:00 -0400
Subject: [PATCH 1/4] Check whether an EncodedURL can be decoded before giving
 it back

---
 src/hyperlink/hypothesis.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/hyperlink/hypothesis.py b/src/hyperlink/hypothesis.py
index 4ab987eb..a041ffe5 100644
--- a/src/hyperlink/hypothesis.py
+++ b/src/hyperlink/hypothesis.py
@@ -318,4 +318,8 @@ def decoded_urls(draw):
         Call the L{EncodedURL.to_uri} method on each URL to get an HTTP
         protocol-friendly URI.
         """
-        return DecodedURL(draw(encoded_urls()))
+        encoded_url = draw(encoded_urls())
+        try:
+            return DecodedURL(encoded_url)
+        except:
+            assume(False)

From 59998b5387081a4e8c1598f85251eda488126069 Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Sat, 27 Aug 2022 11:32:31 -0400
Subject: [PATCH 2/4] handle only UnicodeDecodeError

---
 src/hyperlink/hypothesis.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hyperlink/hypothesis.py b/src/hyperlink/hypothesis.py
index a041ffe5..dc12db7a 100644
--- a/src/hyperlink/hypothesis.py
+++ b/src/hyperlink/hypothesis.py
@@ -321,5 +321,5 @@ def decoded_urls(draw):
         encoded_url = draw(encoded_urls())
         try:
             return DecodedURL(encoded_url)
-        except:
+        except UnicodeDecodeError:
             assume(False)

From d5ba6c84b5ad6d77669979866dd0d9620776f742 Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Sat, 27 Aug 2022 11:35:07 -0400
Subject: [PATCH 3/4] Use the simpler and more easily analysed `reject`

---
 src/hyperlink/hypothesis.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/hyperlink/hypothesis.py b/src/hyperlink/hypothesis.py
index dc12db7a..3be47daf 100644
--- a/src/hyperlink/hypothesis.py
+++ b/src/hyperlink/hypothesis.py
@@ -31,7 +31,7 @@
 
     from . import DecodedURL, EncodedURL
 
-    from hypothesis import assume
+    from hypothesis import reject
     from hypothesis.strategies import (
         composite,
         integers,
@@ -137,7 +137,7 @@ def idna_text(draw, min_size=1, max_size=None):
         try:
             idna_encode(result)
         except IDNAError:
-            assume(False)
+            reject()
 
         return result
 
@@ -198,7 +198,7 @@ def hostname_labels(draw, allow_idn=True):
         try:
             check_label(label)
         except UnicodeError:  # pragma: no cover (not always drawn)
-            assume(False)
+            reject()
 
         return label
 
@@ -322,4 +322,4 @@ def decoded_urls(draw):
         try:
             return DecodedURL(encoded_url)
         except UnicodeDecodeError:
-            assume(False)
+            reject()

From 3543eb03dc4a4958d58e471250c0aea6117376da Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Sat, 27 Aug 2022 11:41:37 -0400
Subject: [PATCH 4/4] Pin black's dependencies so it will work again

---
 tox.ini | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tox.ini b/tox.ini
index 8865d178..56caefe6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -93,7 +93,15 @@ basepython = {[default]basepython}
 skip_install = True
 
 deps =
+    # Pin black and all of its dependencies so an incompatible release of one
+    # of them doesn't break this environment.
+    appdirs==1.4.4
     black==21.7b0
+    click==7.1.2
+    mypy-extensions==0.4.3
+    pathspec==0.9.0
+    regex==2022.8.17
+    tomli==1.2.3
 
 setenv =
     BLACK_LINT_ARGS=--check