[ruby/error_highlight] Make backtrace_location keyword work

We had to keep backtrace_location before opts is overwritten.

https://github.com/ruby/error_highlight/commit/2735e4681a

1 files changed, 26 insertions, 0 deletions

diff --git a/test/error_highlight/test_error_highlight.rb b/test/error_highlight/test_error_highlight.rb
index 89c930f5e6..c4a998092b 100644
--- a/test/error_highlight/test_error_highlight.rb
+++ b/test/error_highlight/test_error_highlight.rb
@@ -1231,4 +1231,30 @@ undefined method `foo' for nil:NilClass
       end
     end
   end
+
+  def raise_name_error
+    1.time
+  end
+
+  def test_spot_with_backtrace_location
+    lineno = __LINE__
+    begin
+      raise_name_error
+    rescue NameError => exc
+    end
+
+    spot = ErrorHighlight.spot(exc).except(:script_lines)
+    assert_equal(lineno - 4, spot[:first_lineno])
+    assert_equal(lineno - 4, spot[:last_lineno])
+    assert_equal(5, spot[:first_column])
+    assert_equal(10, spot[:last_column])
+    assert_equal("    1.time\n", spot[:snippet])
+
+    spot = ErrorHighlight.spot(exc, backtrace_location: exc.backtrace_locations[1]).except(:script_lines)
+    assert_equal(lineno + 2, spot[:first_lineno])
+    assert_equal(lineno + 2, spot[:last_lineno])
+    assert_equal(6, spot[:first_column])
+    assert_equal(22, spot[:last_column])
+    assert_equal("      raise_name_error\n", spot[:snippet])
+  end
 end