From 197885c71f1fee5bf3531edb6f175790ad3ed233 Mon Sep 17 00:00:00 2001
From: Zanie <contact@zanie.dev>
Date: Thu, 16 Nov 2023 08:55:03 -0600
Subject: [PATCH] Add failing test case for escaped curly braces bug in UP032

---
 .../test/fixtures/pyupgrade/UP032_0.py        | 17 ++++
 ...__rules__pyupgrade__tests__UP032_0.py.snap | 88 +++++++++++++++++++
 2 files changed, 105 insertions(+)

diff --git a/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP032_0.py b/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP032_0.py
index 19868afac3284..c5f21e0b7d93d 100644
--- a/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP032_0.py
+++ b/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP032_0.py
@@ -226,3 +226,20 @@ async def c():
     "".format(new_dict, d)
 
 )
+
+# The first string will be converted to an f-string and the curly braces in the second should be converted to be unescaped
+(
+    "{}"
+    "{{}}"
+).format(a)
+
+("{}" "{{}}").format(a)
+
+
+# Both strings will be converted to an f-string and the curly braces in the second should left escaped
+(
+    "{}"
+    "{{{}}}"
+).format(a, b)
+
+("{}" "{{{}}}").format(a, b)
diff --git a/crates/ruff_linter/src/rules/pyupgrade/snapshots/ruff_linter__rules__pyupgrade__tests__UP032_0.py.snap b/crates/ruff_linter/src/rules/pyupgrade/snapshots/ruff_linter__rules__pyupgrade__tests__UP032_0.py.snap
index 4538fe9b917de..7cf99c42418d1 100644
--- a/crates/ruff_linter/src/rules/pyupgrade/snapshots/ruff_linter__rules__pyupgrade__tests__UP032_0.py.snap
+++ b/crates/ruff_linter/src/rules/pyupgrade/snapshots/ruff_linter__rules__pyupgrade__tests__UP032_0.py.snap
@@ -1066,5 +1066,93 @@ UP032_0.py:225:5: UP032 [*] Use f-string instead of `format` call
     225 |+    f"Conflicting configuration dicts: {new_dict!r} {d!r}"
 227 226 | 
 228 227 | )
+229 228 | 
+
+UP032_0.py:231:1: UP032 [*] Use f-string instead of `format` call
+    |
+230 |   # The first string will be converted to an f-string and the curly braces in the second should be converted to be unescaped
+231 | / (
+232 | |     "{}"
+233 | |     "{{}}"
+234 | | ).format(a)
+    | |___________^ UP032
+235 |   
+236 |   ("{}" "{{}}").format(a)
+    |
+    = help: Convert to f-string
+
+ℹ Safe fix
+229 229 | 
+230 230 | # The first string will be converted to an f-string and the curly braces in the second should be converted to be unescaped
+231 231 | (
+232     |-    "{}"
+    232 |+    f"{a}"
+233 233 |     "{{}}"
+234     |-).format(a)
+    234 |+)
+235 235 | 
+236 236 | ("{}" "{{}}").format(a)
+237 237 | 
+
+UP032_0.py:236:1: UP032 [*] Use f-string instead of `format` call
+    |
+234 | ).format(a)
+235 | 
+236 | ("{}" "{{}}").format(a)
+    | ^^^^^^^^^^^^^^^^^^^^^^^ UP032
+    |
+    = help: Convert to f-string
+
+ℹ Safe fix
+233 233 |     "{{}}"
+234 234 | ).format(a)
+235 235 | 
+236     |-("{}" "{{}}").format(a)
+    236 |+(f"{a}" "{{}}")
+237 237 | 
+238 238 | 
+239 239 | # Both strings will be converted to an f-string and the curly braces in the second should left escaped
+
+UP032_0.py:240:1: UP032 [*] Use f-string instead of `format` call
+    |
+239 |   # Both strings will be converted to an f-string and the curly braces in the second should left escaped
+240 | / (
+241 | |     "{}"
+242 | |     "{{{}}}"
+243 | | ).format(a, b)
+    | |______________^ UP032
+244 |   
+245 |   ("{}" "{{{}}}").format(a, b)
+    |
+    = help: Convert to f-string
+
+ℹ Safe fix
+238 238 | 
+239 239 | # Both strings will be converted to an f-string and the curly braces in the second should left escaped
+240 240 | (
+241     |-    "{}"
+242     |-    "{{{}}}"
+243     |-).format(a, b)
+    241 |+    f"{a}"
+    242 |+    f"{{{b}}}"
+    243 |+)
+244 244 | 
+245 245 | ("{}" "{{{}}}").format(a, b)
+
+UP032_0.py:245:1: UP032 [*] Use f-string instead of `format` call
+    |
+243 | ).format(a, b)
+244 | 
+245 | ("{}" "{{{}}}").format(a, b)
+    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ UP032
+    |
+    = help: Convert to f-string
+
+ℹ Safe fix
+242 242 |     "{{{}}}"
+243 243 | ).format(a, b)
+244 244 | 
+245     |-("{}" "{{{}}}").format(a, b)
+    245 |+(f"{a}" f"{{{b}}}")