[#142] parse_having 테스트코드 작성

myyrakle · Jul 29, 2024 · c229278 · c229278
1 parent 2dbe881
commit c229278
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Showing 2 changed files with 65 additions and 1 deletion.
diff --git a/src/ast/dml/parts/having.rs b/src/ast/dml/parts/having.rs
@@ -2,7 +2,7 @@ use crate::ast::types::SQLExpression;
 
 use serde::{Deserialize, Serialize};
 
-#[derive(Deserialize, Serialize, Clone, Debug, PartialEq)]
+#[derive(Deserialize, Serialize, Clone, Debug, PartialEq, Default)]
 pub struct HavingClause {
     pub expression: Box<SQLExpression>,
 }
diff --git a/src/parser/test/select.rs b/src/parser/test/select.rs
@@ -2249,3 +2249,67 @@ fn test_parse_where() {
         }
     }
 }
+
+#[test]
+fn test_parse_having() {
+    struct TestCase {
+        name: String,
+        input: Vec<Token>,
+        expected: HavingClause,
+        want_error: bool,
+    }
+
+    let test_cases = vec![
+        TestCase {
+            name: "HAVING p.id = 1".into(),
+            input: vec![
+                Token::Having,
+                Token::Identifier("p".into()),
+                Token::Period,
+                Token::Identifier("id".into()),
+                Token::Operator(OperatorToken::Eq),
+                Token::Integer(1),
+            ],
+            expected: HavingClause {
+                expression: BinaryOperatorExpression {
+                    operator: BinaryOperator::Eq,
+                    lhs: SelectColumn::new(Some("p".into()), "id".into()).into(),
+                    rhs: SQLExpression::Integer(1),
+                }
+                .into(),
+            },
+            want_error: false,
+        },
+        TestCase {
+            name: "실패: SELECT".into(),
+            input: vec![Token::Select],
+            expected: Default::default(),
+            want_error: true,
+        },
+        TestCase {
+            name: "실패: 빈 토큰".into(),
+            input: vec![],
+            expected: Default::default(),
+            want_error: true,
+        },
+    ];
+
+    for t in test_cases {
+        let mut parser = Parser::new(t.input);
+
+        let got = parser.parse_having(Default::default());
+
+        assert_eq!(
+            got.is_err(),
+            t.want_error,
+            "{}: want_error: {}, error: {:?}",
+            t.name,
+            t.want_error,
+            got.err()
+        );
+
+        if let Ok(statements) = got {
+            assert_eq!(statements, t.expected, "TC: {}", t.name);
+        }
+    }
+}