test(formatter): add protected text corpus guards

test/corpus/watcom/protected-text-control-words.expected.sql

@@ -0,0 +1,13 @@
+CREATE PROCEDURE dbo.protected_text_control_words()
+BEGIN
+  -- if then else endif should stay lower-case in a comment
+  SELECT CASE
+    WHEN MESSAGE = 'if then else endif'
+    THEN 'select from where'
+    ELSE "else"
+  END AS RESULT
+  FROM dbo.audit_log
+  WHERE note = 'begin end if'
+    AND [order by] IS NOT NULL;
+  /* order by where select should stay lower-case in block comment */
+END;

test/corpus/watcom/protected-text-control-words.input.sql

@@ -0,0 +1,8 @@
+create procedure dbo.protected_text_control_words()
+begin
+-- if then else endif should stay lower-case in a comment
+select case when message = 'if then else endif' then 'select from where' else "else" end as result
+from dbo.audit_log
+where note = 'begin end if' and [order by] is not null;
+/* order by where select should stay lower-case in block comment */
+end;

test/corpus/watcom/protected-text-query-keywords.expected.sql

@@ -0,0 +1,8 @@
+CREATE PROCEDURE dbo.protected_text_query_keywords()
+BEGIN
+  SELECT "from", [where], 'select from where order by' AS literal_value, description
+  FROM dbo.keyword_notes
+  WHERE "from" = 'order by'
+    AND [where] LIKE '%select%' -- group by should stay lower-case in comment
+  ORDER BY "from", [where];
+END;

test/corpus/watcom/protected-text-query-keywords.input.sql

@@ -0,0 +1,7 @@
+create procedure dbo.protected_text_query_keywords()
+begin
+select "from", [where], 'select from where order by' as literal_value, description
+from dbo.keyword_notes
+where "from" = 'order by' and [where] like '%select%' -- group by should stay lower-case in comment
+order by "from", [where];
+end;