Simplify arrow_cast tests (apache#1367)

Author: alamb

tests/sqlparser_postgres.rs

@@ -4479,112 +4479,50 @@ fn test_unicode_string_literal() {
 
 fn check_arrow_precedence(sql: &str, arrow_operator: BinaryOperator) {
     assert_eq!(
-        pg().verified_stmt(sql),
-        Statement::Query(Box::new(Query {
-            with: None,
-            body: Box::new(SetExpr::Select(Box::new(Select {
-                distinct: None,
-                top: None,
-                projection: vec![SelectItem::UnnamedExpr(Expr::BinaryOp {
-                    left: Box::new(Expr::BinaryOp {
-                        left: Box::new(Expr::Identifier(Ident {
-                            value: "foo".to_string(),
-                            quote_style: None,
-                        })),
-                        op: arrow_operator,
-                        right: Box::new(Expr::Value(Value::SingleQuotedString("bar".to_string()))),
-                    }),
-                    op: BinaryOperator::Eq,
-                    right: Box::new(Expr::Value(Value::SingleQuotedString("spam".to_string()))),
-                })],
-                into: None,
-                from: vec![],
-                lateral_views: vec![],
-                prewhere: None,
-                selection: None,
-                group_by: GroupByExpr::Expressions(vec![], vec![]),
-                cluster_by: vec![],
-                distribute_by: vec![],
-                sort_by: vec![],
-                having: None,
-                named_window: vec![],
-                qualify: None,
-                window_before_qualify: false,
-                value_table_mode: None,
-                connect_by: None,
-            }))),
-            order_by: None,
-            limit: None,
-            limit_by: vec![],
-            offset: None,
-            fetch: None,
-            locks: vec![],
-            for_clause: None,
-            settings: None,
-            format_clause: None,
-        }))
+        pg().verified_expr(sql),
+        Expr::BinaryOp {
+            left: Box::new(Expr::BinaryOp {
+                left: Box::new(Expr::Identifier(Ident {
+                    value: "foo".to_string(),
+                    quote_style: None,
+                })),
+                op: arrow_operator,
+                right: Box::new(Expr::Value(Value::SingleQuotedString("bar".to_string()))),
+            }),
+            op: BinaryOperator::Eq,
+            right: Box::new(Expr::Value(Value::SingleQuotedString("spam".to_string()))),
+        }
     )
 }
 
 #[test]
 fn arrow_precedence() {
-    check_arrow_precedence("SELECT foo -> 'bar' = 'spam'", BinaryOperator::Arrow);
+    check_arrow_precedence("foo -> 'bar' = 'spam'", BinaryOperator::Arrow);
 }
 
 #[test]
 fn long_arrow_precedence() {
-    check_arrow_precedence("SELECT foo ->> 'bar' = 'spam'", BinaryOperator::LongArrow);
+    check_arrow_precedence("foo ->> 'bar' = 'spam'", BinaryOperator::LongArrow);
 }
 
 #[test]
 fn arrow_cast_precedence() {
     // check this matches postgres where you would need `(foo -> 'bar')::TEXT`
-    let stmt = pg().verified_stmt("SELECT foo -> 'bar'::TEXT");
+    let stmt = pg().verified_expr("foo -> 'bar'::TEXT");
     assert_eq!(
         stmt,
-        Statement::Query(Box::new(Query {
-            with: None,
-            body: Box::new(SetExpr::Select(Box::new(Select {
-                distinct: None,
-                top: None,
-                projection: vec![SelectItem::UnnamedExpr(Expr::BinaryOp {
-                    left: Box::new(Expr::Identifier(Ident {
-                        value: "foo".to_string(),
-                        quote_style: None,
-                    })),
-                    op: BinaryOperator::Arrow,
-                    right: Box::new(Expr::Cast {
-                        kind: CastKind::DoubleColon,
-                        expr: Box::new(Expr::Value(Value::SingleQuotedString("bar".to_string()))),
-                        data_type: DataType::Text,
-                        format: None,
-                    }),
-                })],
-                into: None,
-                from: vec![],
-                lateral_views: vec![],
-                prewhere: None,
-                selection: None,
-                group_by: GroupByExpr::Expressions(vec![], vec![]),
-                cluster_by: vec![],
-                distribute_by: vec![],
-                sort_by: vec![],
-                having: None,
-                named_window: vec![],
-                qualify: None,
-                window_before_qualify: false,
-                value_table_mode: None,
-                connect_by: None,
-            }))),
-            order_by: None,
-            limit: None,
-            limit_by: vec![],
-            offset: None,
-            fetch: None,
-            locks: vec![],
-            for_clause: None,
-            settings: None,
-            format_clause: None,
-        }))
+        Expr::BinaryOp {
+            left: Box::new(Expr::Identifier(Ident {
+                value: "foo".to_string(),
+                quote_style: None,
+            })),
+            op: BinaryOperator::Arrow,
+            right: Box::new(Expr::Cast {
+                kind: CastKind::DoubleColon,
+                expr: Box::new(Expr::Value(Value::SingleQuotedString("bar".to_string()))),
+                data_type: DataType::Text,
+                format: None,
+            }),
+        }
     )
 }