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TestASTBasedReducer.java
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package sqlancer.reducer;
import net.sf.jsqlparser.JSQLParserException;
import net.sf.jsqlparser.parser.CCJSqlParserUtil;
import org.junit.jupiter.api.Test;
import sqlancer.common.query.Query;
import java.util.List;
import java.util.function.Function;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
public class TestASTBasedReducer {
@Test
void testRemovingClauses() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStr = {
"SELECT DISTINCT * FROM v0 WHERE ((v0.rowid || ( (v0.c + v0.d) < 200 && v0.c >= 100) || 114514)OR(((v0.c0)||(1529686005)))) UNION SELECT DISTINCT * FROM v0 WHERE (NOT ((v0.rowid)OR(((v0.c0)||(1529686005))))) UNION SELECT DISTINCT * FROM v0 WHERE ((((v0.rowid)OR(((v0.c0)||(1529686005))))) IS NULL)" };
env.setInitialStatementsFromStrings(List.of(queriesStr));
env.setBugInducingCondition(statements -> {
String queriesString = TestEnvironment.getQueriesString(statements);
try {
CCJSqlParserUtil.parse(queriesString);
} catch (JSQLParserException e) {
return false;
}
return queriesString.contains("&&");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
String outcome = TestEnvironment.getQueriesString(reducedResult);
assertEquals(outcome, "SELECT * FROM v0 WHERE v0.c && v0.c;");
}
@Test
void testReducingMultipleTokensToOne() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStr = {
"SELECT DISTINCT row_id, c FROM v0 WHERE ((v0.rowid || (v0.c < 200 && v0.c >= 100) || 114514)OR(((v0.c0)||(1529686005)))) UNION SELECT DISTINCT * FROM v0 WHERE (NOT ((v0.rowid)OR(((v0.c0)||(1529686005))))) UNION SELECT DISTINCT * FROM v0 WHERE ((((v0.rowid)OR(((v0.c0)||(1529686005))))) IS NULL)" };
env.setInitialStatementsFromStrings(List.of(queriesStr));
env.setBugInducingCondition(statements -> {
String queriesString = TestEnvironment.getQueriesString(statements);
try {
CCJSqlParserUtil.parse(queriesString);
} catch (JSQLParserException e) {
return false;
}
return queriesString.contains("||");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertEquals(TestEnvironment.getQueriesString(reducedResult), "SELECT row_id FROM v0 WHERE v0.rowid || 0;");
}
@Test
void testMultipleStatements() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStrs = {
"SELECT DISTINCT row_id, c FROM v0 WHERE ((v0.rowid || (v0.c < 200 && v0.c >= 100) || 114514)OR(((v0.c0)||(1529686005)))) UNION SELECT DISTINCT * FROM v0 WHERE (NOT ((v0.rowid)OR(((v0.c0)||(1529686005))))) UNION SELECT DISTINCT * FROM v0 WHERE ((((v0.rowid)OR(((v0.c0)||(1529686005))))) IS NULL)",
"SELECT DISTINCT row_id, c FROM v0 WHERE ((v0.rowid || (v0.c < 200 && v0.c >= 100) || 114514)OR(((v0.c0)||(1529686005)))) UNION SELECT DISTINCT * FROM v0 WHERE (NOT ((v0.rowid)OR(((v0.c0)||(1529686005))))) UNION SELECT DISTINCT * FROM v0 WHERE ((((v0.rowid)OR(((v0.c0)||(1529686005))))) IS NULL)" };
env.setInitialStatementsFromStrings(List.of(queriesStrs));
env.setBugInducingCondition(statements -> {
String queriesString = TestEnvironment.getQueriesString(statements);
try {
for (Query<?> s : statements) {
CCJSqlParserUtil.parse(s.getQueryString());
}
} catch (JSQLParserException e) {
return false;
}
return queriesString.toUpperCase().contains("UNION");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertEquals(TestEnvironment.getQueriesString(reducedResult),
"SELECT row_id FROM v0;\nSELECT row_id FROM v0 UNION SELECT * FROM v0;");
}
@Test
void removeJoins() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStrs = { "SELECT * FROM t0, t1, t2, t3, t4 Where t2.val = t1.val" };
env.setInitialStatementsFromStrings(List.of(queriesStrs));
env.setBugInducingCondition(statements -> {
try {
for (Query<?> s : statements) {
CCJSqlParserUtil.parse(s.getQueryString());
}
} catch (JSQLParserException e) {
return false;
}
String queriesString = TestEnvironment.getQueriesString(statements);
if (!queriesString.contains("WHERE")) {
return false;
}
String[] split = queriesString.split("WHERE");
String columns = split[0];
String condition = split[1];
return columns.contains("t1") && condition.contains("t1");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertEquals(TestEnvironment.getQueriesString(reducedResult), "SELECT * FROM t0, t1 WHERE t1.val;");
}
@Test
void testComplicated() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStrs = {
"SELECT STRING_AGG(v0.c2) FROM t0, v0 WHERE (CASE true WHEN (ABS(true) BETWEEN (v0.c0 LIKE NULL ESCAPE v0.c2) AND (DATE '1970-01-23' NOT IN (v0.c2))) THEN (0.07914839711718646 NOT BETWEEN '' AND ((v0.c0)OR(v0.c2))) WHEN v0.c1 THEN ((v0.c1)-(v0.c0)) WHEN t0.c1 THEN (TIMESTAMP '1969-12-29 20:22:33' IN (PI(), v0.c2, (v0.c1 BETWEEN '' AND v0.rowid))) WHEN v0.c1 THEN TIMESTAMP '1969-12-16 17:24:43' WHEN ((((v0.c1)-(t0.c0)))||(t0.c0)) THEN true ELSE ((0.279978719843174)/(((v0.c1)>(DATE '1969-12-19')))) END ) GROUP BY ((DATE '1970-01-24') IS NULL), t0.c1, (CASE (v0.c1 LIKE ((0.9833120083624495)SIMILAR TO(t0.rowid)) ESCAPE CEIL(TIMESTAMP '1970-01-11 16:38:26')) WHEN t0.rowid THEN 0.27742217994251717 ELSE ((v0.c0) IS NOT NULL) END );" };
env.setInitialStatementsFromStrings(List.of(queriesStrs));
Function<List<Query<?>>, Boolean> condition = statements -> {
String queriesString = TestEnvironment.getQueriesString(statements);
try {
CCJSqlParserUtil.parse(queriesString);
} catch (JSQLParserException e) {
return false;
}
return queriesString.toUpperCase().contains("CASE");
};
env.setBugInducingCondition(condition);
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertTrue(condition.apply(reducedResult));
}
@Test
void testSimplifyingConstantStringValue() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStrs = { "SELECT * FROM t0 WHERE v LIKE '[vQ3㭫oQ';" };
env.setInitialStatementsFromStrings(List.of(queriesStrs));
env.setBugInducingCondition(statements -> {
try {
for (Query<?> s : statements) {
CCJSqlParserUtil.parse(s.getQueryString());
}
} catch (JSQLParserException e) {
return false;
}
String queriesString = TestEnvironment.getQueriesString(statements);
return queriesString.contains("LIKE");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertEquals("SELECT * FROM t0 WHERE v LIKE '_';", TestEnvironment.getQueriesString(reducedResult));
}
@Test
void testSimplifyingConstantLongValue() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStrs = { "SELECT * FROM t0 where t0.v = 314598267;" };
env.setInitialStatementsFromStrings(List.of(queriesStrs));
env.setBugInducingCondition(statements -> {
try {
for (Query<?> s : statements) {
CCJSqlParserUtil.parse(s.getQueryString());
}
} catch (JSQLParserException e) {
return false;
}
String queriesString = TestEnvironment.getQueriesString(statements);
return queriesString.contains("t0.v = ");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertEquals("SELECT * FROM t0 WHERE t0.v = 0;", TestEnvironment.getQueriesString(reducedResult));
}
@Test
void testSubSelects() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStrs = {
"SELECT AVG(c0) FROM (SELECT SUM(c1) AS c0 FROM t1 GROUP BY c2 LIMIT 32 OFFSET 128) AS t1;" };
env.setInitialStatementsFromStrings(List.of(queriesStrs));
env.setBugInducingCondition(statements -> {
String queriesString = TestEnvironment.getQueriesString(statements);
try {
for (Query<?> s : statements) {
CCJSqlParserUtil.parse(s.getQueryString());
}
} catch (JSQLParserException e) {
return false;
}
return queriesString.contains("AVG");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertEquals("SELECT AVG(c0) FROM (SELECT SUM(c1) AS c0 FROM t1) AS t1;",
TestEnvironment.getQueriesString(reducedResult));
}
@Test
void testInsert() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStrs = {
"INSERT INTO t1(c2, c0) VALUES (1508438260, 2929), (1508438260, TIMESTAMP '1969-12-26 01:57:21'), (0.5347171705591047, 398662142);" };
env.setInitialStatementsFromStrings(List.of(queriesStrs));
env.setBugInducingCondition(statements -> {
String queriesString = TestEnvironment.getQueriesString(statements);
try {
CCJSqlParserUtil.parse(queriesString);
} catch (JSQLParserException e) {
return false;
}
return queriesString.contains("(0.5347171705591047, 398662142)");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertEquals("INSERT INTO t1 (c2, c0) VALUES (0.5347171705591047, 398662142);",
TestEnvironment.getQueriesString(reducedResult));
}
@Test
void testWithSelect() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStrs = {
"WITH cte1 AS (SELECT a, b FROM table1 where a < b), cte2 AS (SELECT c, d FROM table2 where c = d) SELECT b, d FROM cte1 JOIN cte2 WHERE cte1.a = cte2.c;" };
env.setInitialStatementsFromStrings(List.of(queriesStrs));
env.setBugInducingCondition(statements -> {
String queriesString = TestEnvironment.getQueriesString(statements);
try {
CCJSqlParserUtil.parse(queriesString);
} catch (JSQLParserException e) {
return false;
}
return queriesString.contains("table1");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertEquals("WITH cte1 AS (SELECT a FROM table1) SELECT b FROM cte1;",
TestEnvironment.getQueriesString(reducedResult));
}
@Test
void testRoundDouble() throws Exception {
TestEnvironment env = TestEnvironment.getASTBasedReducerEnv();
String[] queriesStrs = { "SELECT * FROM t0 WHERE (2.1427572639 IS NULL);" };
env.setInitialStatementsFromStrings(List.of(queriesStrs));
env.setBugInducingCondition(statements -> {
String queriesString = TestEnvironment.getQueriesString(statements);
try {
CCJSqlParserUtil.parse(queriesString);
} catch (JSQLParserException e) {
return false;
}
return queriesString.contains("WHERE");
});
env.runReduce();
List<Query<?>> reducedResult = env.getReducedStatements();
assertEquals("SELECT * FROM t0 WHERE 2.143 IS NULL;", TestEnvironment.getQueriesString(reducedResult));
}
}