[Fix #10830] Fix an incorrect autocorrect for Layout/FirstArgumentIndentation

changelog/fix_an_incorrect_autocorrect_for_layout_first_argument_indentation.md

@@ -0,0 +1 @@
+* [#10830](https://github.com/rubocop/rubocop/issues/10830): Fix an incorrect autocorrect for `Layout/FirstArgumentIndentation` when specifying `EnforcedStyle: with_fixed_indentation` of `Layout/ArgumentAlignment` and `EnforcedStyle: consistent` of `Layout/FirstArgumentIndentation` and enabling `Layout/FirstMethodArgumentLineBreak`. ([@koic][])

lib/rubocop/cop/layout/first_argument_indentation.rb

@@ -153,7 +153,8 @@ class FirstArgumentIndentation < Base
         MSG = 'Indent the first argument one step more than %<base>s.'
 
         def on_send(node)
-          return if style != :consistent && enforce_first_argument_with_fixed_indentation?
+          return if style != :consistent && enforce_first_argument_with_fixed_indentation? &&
+                    !enable_layout_first_method_argument_line_break?
           return if !node.arguments? || bare_operator?(node) || node.setter_method?
 
           indent = base_indentation(node) + configured_indentation_width
@@ -267,6 +268,10 @@ def enforce_first_argument_with_fixed_indentation?
           argument_alignment_config['EnforcedStyle'] == 'with_fixed_indentation'
         end
 
+        def enable_layout_first_method_argument_line_break?
+          config.for_cop('Layout/FirstMethodArgumentLineBreak')['Enabled']
+        end
+
         def argument_alignment_config
           config.for_cop('Layout/ArgumentAlignment')
         end

spec/rubocop/cli/autocorrect_spec.rb

@@ -1887,6 +1887,47 @@ def self.some_method(foo, bar: 1)
     end
   end
 
+  it 'registers an offense and corrects when using `Layout/ArgumentAlignment`, `Layout/FirstArgumentIndentation`, and `Layout/FirstMethodArgumentLineBreak` ' \
+     'and specifying `EnforcedStyle: with_fixed_indentation` of `Layout/ArgumentAlignment` ' \
+     'and `EnforcedStyle: consistent` of `Layout/FirstArgumentIndentation`' do
+    create_file('example.rb', <<~RUBY)
+      # frozen_string_literal: true
+
+      it do
+          expect(do_something).to eq([
+          'foo',
+          'bar'
+        ])
+      end
+    RUBY
+
+    create_file('.rubocop.yml', <<~YAML)
+      Layout/ArgumentAlignment:
+        EnforcedStyle: with_fixed_indentation
+      Layout/FirstArgumentIndentation:
+        EnforcedStyle: consistent
+      Layout/FirstMethodArgumentLineBreak:
+        Enabled: true
+    YAML
+
+    expect(cli.run(['--autocorrect', '--only', %w[
+      Layout/ArgumentAlignment Layout/FirstArgumentIndentation Layout/FirstMethodArgumentLineBreak
+      Layout/IndentationWidth
+    ].join(',')])).to eq(0)
+    expect($stderr.string).to eq('')
+    expect(File.read('example.rb')).to eq(<<~RUBY)
+      # frozen_string_literal: true
+
+      it do
+        expect(do_something).to eq(
+          [
+            'foo',
+            'bar'
+          ])
+      end
+    RUBY
+  end
+
   it 'corrects when specifying `EnforcedStyle: with_fixed_indentation` of `Layout/ArgumentAlignment` and ' \
      '`EnforcedStyle: consistent` of `Layout/FirstArgumentIndentation`' do
     create_file('example.rb', <<~RUBY)