feat(LEXER): support multiline subshells

Author: niall-byrne

lib/bashcov/lexer.rb

@@ -13,7 +13,7 @@ class Lexer
     IGNORE_END_WITH = %w[(].freeze
 
     # Lines containing only one of these keywords are irrelevant for coverage
-    IGNORE_IS = %w[esac if then else elif fi while do done { } ;;].freeze
+    IGNORE_IS = %w[esac if then else elif fi while do done { } ;; ( )].freeze
 
     # @param [String] filename File to analyze
     # @param [Hash] coverage Coverage with executed lines marked

spec/support/test_app.rb

@@ -31,7 +31,7 @@ def expected_coverage
     "#{test_app}/scripts/source.sh" => [nil, nil, 1, nil, 2],
     "#{test_app}/scripts/sourced.txt" => [nil, nil, 1],
     "#{test_app}/scripts/unicode.sh" => [nil, nil, nil, 1, nil, 1],
-    "#{test_app}/scripts/multiline.sh" => [nil, nil, nil, 1, nil, 0, nil, 1, nil, 1, nil, 0, nil, nil, 1, 2, 1, 1, 0, nil, nil, 2, nil, nil, 1, 1, 1, 1, nil, 1, 1, 1, 1, 1, nil, 1, 1, 1, 1, nil, 1],
+    "#{test_app}/scripts/multiline.sh" => [nil, nil, nil, 1, nil, 0, nil, 1, nil, 1, nil, 0, nil, nil, 1, 2, 1, 1, 0, nil, nil, 2, nil, nil, 1, 1, 1, 1, nil, 1, 1, 1, 1, 1, nil, 1, 1, 1, 1, nil, nil, 1],
     "#{test_app}/scripts/multiline2.sh" => [nil, nil, 1, 1, 1, 1, nil, 1, 1, 1, 1, nil, 1, 1, 1, 1, 1, 1, nil, 1, 1, 1, 1, 1, 1, 1, 1, nil, 1, 1, 1, nil, 1, nil, nil, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, nil, nil, 1],
     "#{test_app}/scripts/multiline3.sh" => [nil, nil, 1, 1, 1, 1],
     "#{test_app}/scripts/multiline4.sh" => [nil, nil, 1, 1],

spec/test_app/scripts/multiline.sh

@@ -38,4 +38,6 @@ hello
 there
 '
 # nil
-echo the end # 1
+( # nil
+  echo the end # 1
+) # nil