test(formatter): add exception handler corpus guards

test/corpus/watcom/exception-handler.expected.sql

@@ -0,0 +1,10 @@
+CREATE PROCEDURE dbo.handle_import_errors()
+BEGIN
+  SET status_code = 1;
+EXCEPTION
+  WHEN OTHERS THEN
+    BEGIN
+      SET status_code = 0;
+      SELECT sqlcode, SQLSTATE;
+    END
+END;

test/corpus/watcom/exception-handler.input.sql

@@ -0,0 +1,8 @@
+create procedure dbo.handle_import_errors()
+begin
+set status_code = 1;
+exception when others then begin
+set status_code = 0;
+select sqlcode, sqlstate;
+end
+end;

test/corpus/watcom/exception-resume-and-declarations.expected.sql

@@ -0,0 +1,6 @@
+CREATE PROCEDURE dbo.exception_resume_guard()
+BEGIN
+  ON EXCEPTION RESUME
+  DECLARE "validation_error" EXCEPTION FOR SQLSTATE VALUE '75000';
+  SELECT 'exception when others then begin' AS note -- exception when others then begin
+END;

test/corpus/watcom/exception-resume-and-declarations.input.sql

@@ -0,0 +1,6 @@
+create procedure dbo.exception_resume_guard()
+begin
+on exception resume
+declare "validation_error" exception for sqlstate value '75000';
+select 'exception when others then begin' as note -- exception when others then begin
+end;