Infer indentation with imports when logical indent is absent

crates/ruff_linter/resources/test/fixtures/isort/two_space.py

@@ -0,0 +1,10 @@
+# If the file doesn't contain a logical indent token, we should still detect two-space indentation on imports.
+from math import (
+  sin,
+  tan,
+  cos,
+  nan,
+  pi,
+)
+
+del sin, cos, tan, pi, nan

crates/ruff_linter/resources/test/fixtures/pyupgrade/UP031_0.py

@@ -29,6 +29,11 @@
 
 print("brace {} %s" % (1,))
 
+print((
+    "foo %s "
+    "bar %s" % (x, y)
+))
+
 print(
   "%s" % (
     "trailing comma",
@@ -52,10 +57,6 @@
 
 print("%(a)s" % {"a"  :  1})
 
-print((
-    "foo %s "
-    "bar %s" % (x, y)
-))
 
 print(
     "foo %(foo)s "

crates/ruff_linter/src/rules/isort/mod.rs

@@ -341,6 +341,7 @@ mod tests {
     #[test_case(Path::new("split.py"))]
     #[test_case(Path::new("star_before_others.py"))]
     #[test_case(Path::new("trailing_suffix.py"))]
+    #[test_case(Path::new("two_space.py"))]
     #[test_case(Path::new("type_comments.py"))]
     #[test_case(Path::new("unicode.py"))]
     fn default(path: &Path) -> Result<()> {

crates/ruff_linter/src/rules/isort/snapshots/ruff_linter__rules__isort__tests__two_space.py.snap

@@ -0,0 +1,32 @@
+---
+source: crates/ruff_linter/src/rules/isort/mod.rs
+---
+two_space.py:2:1: I001 [*] Import block is un-sorted or un-formatted
+   |
+ 1 |   # If the file doesn't contain a logical indent token, we should still detect two-space indentation on imports.
+ 2 | / from math import (
+ 3 | |   sin,
+ 4 | |   tan,
+ 5 | |   cos,
+ 6 | |   nan,
+ 7 | |   pi,
+ 8 | | )
+ 9 | | 
+10 | | del sin, cos, tan, pi, nan
+   | |_^ I001
+   |
+   = help: Organize imports
+
+ℹ Safe fix
+1 1 | # If the file doesn't contain a logical indent token, we should still detect two-space indentation on imports.
+2 2 | from math import (
+3   |-  sin,
+4   |-  tan,
+5 3 |   cos,
+6 4 |   nan,
+7 5 |   pi,
+  6 |+  sin,
+  7 |+  tan,
+8 8 | )
+9 9 | 
+10 10 | del sin, cos, tan, pi, nan