Improve test robustness

Author: royi-luo

test/test_files/function/call/fsm_info.test

@@ -50,11 +50,13 @@ True
 -STATEMENT CALL fsm_info() return sum(num_pages) > 0
 ---- 1
 True
-# copy for new table should reuse the old pages
+# copy for new table should reuse most of the old pages
 -STATEMENT COPY person1 FROM "${KUZU_ROOT_DIRECTORY}/dataset/tinysnb/vPerson.csv";
 ---- ok
--STATEMENT CALL fsm_info() return *
----- 0
+# allow margin equal to the largest page range for a column chunk in the table
+-STATEMENT CALL fsm_info() with sum(num_pages) as num_free_pages call storage_info('person1') with num_free_pages, max(num_pages) as largest_range return num_free_pages is null or largest_range >= num_free_pages
+---- 1
+True
 
 -CASE FSMEmptyAfterFirstCopy
 -STATEMENT create node table person (ID INt64, fName StRING, gender INT64, isStudent BoOLEAN, isWorker BOOLEAN, age INT64, eyeSight DOUBLE, birthdate DATE, registerTime TIMESTAMP, lastJobDuration interval, workedHours INT64[], usedNames STRING[], courseScoresPerTerm INT64[][], grades INT64[4], height float, u UUID, PRIMARY KEY (ID));
@@ -89,8 +91,10 @@ True
 -STATEMENT CALL fsm_info() return sum(num_pages) > 0
 ---- 1
 True
-# copying the same initial data to a new table should reuse the same pages
+# copying the same initial data to a new table should reuse most of the pages
 -STATEMENT COPY knows1 FROM "${KUZU_ROOT_DIRECTORY}/dataset/tinysnb/eKnows.csv";
 ---- ok
--STATEMENT call fsm_info() return *
----- 0
+# allow margin equal to the largest page range for a column chunk in the table
+-STATEMENT CALL fsm_info() with sum(num_pages) as num_free_pages call storage_info('knows1') with num_free_pages, max(num_pages) as largest_range return num_free_pages is null or largest_range >= num_free_pages
+---- 1
+True