diff --git a/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/ddl/index/PostgreSQLIndexSQLGeneratorTest.java b/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/ddl/index/PostgreSQLIndexSQLGeneratorTest.java
index 9691bd61f8288..de572aab2eee1 100644
--- a/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/ddl/index/PostgreSQLIndexSQLGeneratorTest.java
+++ b/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/ddl/index/PostgreSQLIndexSQLGeneratorTest.java
@@ -39,7 +39,7 @@ void assertGenerate() throws SQLException {
         Connection connection = mock(Connection.class, RETURNS_DEEP_STUBS);
         ResultSet getNodesResultSet = mockGetNodesResultSet();
         when(connection.createStatement().executeQuery(
-                contains("SELECT DISTINCT ON(cls.relname) cls.oid, cls.relname as name," + System.lineSeparator() + "(SELECT (CASE WHEN count(i.inhrelid) > 0 THEN true ELSE false END)")))
+                contains("SELECT DISTINCT ON(cls.relname) cls.oid, cls.relname as name," + "\n" + "(SELECT (CASE WHEN count(i.inhrelid) > 0 THEN true ELSE false END)")))
                         .thenReturn(getNodesResultSet);
         ResultSet getPropertiesResultSet = mockGetPropertiesResultSet();
         when(connection.createStatement().executeQuery(contains("SELECT DISTINCT ON(cls.relname) cls.oid, cls.relname as name, indrelid, indkey, indisclustered"))).thenReturn(getPropertiesResultSet);
@@ -50,8 +50,8 @@ void assertGenerate() throws SQLException {
         context.put("schema", "foo_schema");
         context.put("name", "foo_tbl");
         String actual = new PostgreSQLIndexSQLGenerator(connection, 10, 0).generate(context);
-        String expected = "CREATE INDEX IF NOT EXISTS foo_tbl" + System.lineSeparator() + "ON foo_schema.foo_tbl USING foo_am_name"
-                + System.lineSeparator() + "()" + System.lineSeparator() + "WITH (FILLFACTOR=90)" + System.lineSeparator() + "TABLESPACE default" + System.lineSeparator() + "WHERE NULL;";
+        String expected = "CREATE INDEX IF NOT EXISTS foo_tbl" + "\n" + "ON foo_schema.foo_tbl USING foo_am_name"
+                + "\n" + "()" + "\n" + "WITH (FILLFACTOR=90)" + "\n" + "TABLESPACE default" + "\n" + "WHERE NULL;";
         assertThat(actual, is(expected));
     }
     
diff --git a/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/ddl/table/PostgreSQLTablePropertiesLoaderTest.java b/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/ddl/table/PostgreSQLTablePropertiesLoaderTest.java
index 8556ea175b162..5fc83af3be9ea 100644
--- a/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/ddl/table/PostgreSQLTablePropertiesLoaderTest.java
+++ b/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/ddl/table/PostgreSQLTablePropertiesLoaderTest.java
@@ -37,10 +37,10 @@ void assertLoad() throws SQLException {
         Connection connection = mock(Connection.class, RETURNS_DEEP_STUBS);
         when(connection.getCatalog()).thenReturn("foo_db");
         ResultSet fetchDatabaseIdResultSet = mockFetchDatabaseIdResultSet();
-        when(connection.createStatement().executeQuery(System.lineSeparator() + "SELECT oid AS did, datlastsysoid FROM pg_catalog.pg_database WHERE datname = 'foo_db';" + System.lineSeparator()))
+        when(connection.createStatement().executeQuery("\n" + "SELECT oid AS did, datlastsysoid FROM pg_catalog.pg_database WHERE datname = 'foo_db';" + "\n"))
                 .thenReturn(fetchDatabaseIdResultSet);
         ResultSet fetchSchemaIdResultSet = mockFetchSchemaIdResultSet();
-        when(connection.createStatement().executeQuery(System.lineSeparator() + "SELECT oid AS scid FROM pg_catalog.pg_namespace WHERE nspname = 'foo_schema';" + System.lineSeparator()))
+        when(connection.createStatement().executeQuery("\n" + "SELECT oid AS scid FROM pg_catalog.pg_namespace WHERE nspname = 'foo_schema';" + "\n"))
                 .thenReturn(fetchSchemaIdResultSet);
         Map<String, Object> actual = new PostgreSQLTablePropertiesLoader(connection, "foo_tbl", "foo_schema", 12, 0).load();
         assertThat(actual.size(), is(7));
diff --git a/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/template/PostgreSQLPipelineFreemarkerManagerTest.java b/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/template/PostgreSQLPipelineFreemarkerManagerTest.java
index 7a2dc17336e13..742e0a41ddc3d 100644
--- a/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/template/PostgreSQLPipelineFreemarkerManagerTest.java
+++ b/kernel/data-pipeline/dialect/postgresql/src/test/java/org/apache/shardingsphere/data/pipeline/postgresql/sqlbuilder/template/PostgreSQLPipelineFreemarkerManagerTest.java
@@ -32,7 +32,7 @@ class PostgreSQLPipelineFreemarkerManagerTest {
     @Test
     void assertGetSQLByDefaultVersion() {
         String actual = PostgreSQLPipelineFreemarkerManager.getSQLByVersion(Collections.singletonMap("databaseName", "foo_db"), "component/table/%s/get_database_id.ftl", 10, 0);
-        String expected = System.lineSeparator() + "SELECT oid AS did, datlastsysoid FROM pg_catalog.pg_database WHERE datname = 'foo_db';" + System.lineSeparator();
+        String expected = "\n" + "SELECT oid AS did, datlastsysoid FROM pg_catalog.pg_database WHERE datname = 'foo_db';" + "\n";
         assertThat(actual, is(expected));
     }