test(mysql): add error tests

Cargo.toml

@@ -246,6 +246,11 @@ name = "mysql-macros"
 path = "tests/mysql/macros.rs"
 required-features = ["mysql", "macros"]
 
+[[test]]
+name = "mysql-error"
+path = "tests/mysql/error.rs"
+required-features = ["mysql"]
+
 [[test]]
 name = "mysql-test-attr"
 path = "tests/mysql/test-attr.rs"

tests/mysql/error.rs

@@ -0,0 +1,80 @@
+use sqlx::{error::ErrorKind, mysql::MySql, Connection, Executor, Transaction};
+use sqlx_test::new;
+
+async fn with_test_row(conn: &mut Transaction<'_, MySql>) -> anyhow::Result<()> {
+    sqlx::query!("INSERT INTO tweet(id, text, owner_id) VALUES (1, 'Foo', 1)")
+        .execute(conn)
+        .await?;
+    Ok(())
+}
+
+#[sqlx_macros::test]
+async fn it_fails_with_unique_violation() -> anyhow::Result<()> {
+    let mut conn = new::<MySql>().await?;
+    let mut tx = conn.begin().await?;
+    with_test_row(&mut tx).await.unwrap();
+
+    let res: Result<_, sqlx::Error> = sqlx::query("INSERT INTO tweet VALUES (1, NOW(), 'Foo', 1);")
+        .execute(&mut tx)
+        .await;
+    let err = res.unwrap_err();
+
+    let err = err.into_database_error().unwrap();
+
+    assert_eq!(err.kind(), Some(ErrorKind::UniqueViolation));
+
+    Ok(())
+}
+
+#[sqlx_macros::test]
+async fn it_fails_with_foreign_key_violation() -> anyhow::Result<()> {
+    let mut conn = new::<MySql>().await?;
+    let mut tx = conn.begin().await?;
+
+    let res: Result<_, sqlx::Error> =
+        sqlx::query("INSERT INTO tweet_reply (tweet_id, text) VALUES (1, 'Reply!');")
+            .execute(&mut tx)
+            .await;
+    let err = res.unwrap_err();
+
+    let err = err.into_database_error().unwrap();
+
+    assert_eq!(err.kind(), Some(ErrorKind::ForeignKeyViolation));
+
+    Ok(())
+}
+
+#[sqlx_macros::test]
+async fn it_fails_with_not_null_violation() -> anyhow::Result<()> {
+    let mut conn = new::<MySql>().await?;
+    let mut tx = conn.begin().await?;
+
+    let res: Result<_, sqlx::Error> = sqlx::query("INSERT INTO tweet (text) VALUES (null);")
+        .execute(&mut tx)
+        .await;
+    let err = res.unwrap_err();
+
+    let err = err.into_database_error().unwrap();
+
+    assert_eq!(err.kind(), Some(ErrorKind::NotNullViolation));
+
+    Ok(())
+}
+
+#[sqlx_macros::test]
+async fn it_fails_with_check_violation() -> anyhow::Result<()> {
+    let mut conn = new::<MySql>().await?;
+    let mut tx = conn.begin().await?;
+
+    let res: Result<_, sqlx::Error> =
+        sqlx::query("INSERT INTO products VALUES (1, 'Product 1', 0);")
+            .execute(&mut tx)
+            .await;
+    let err = res.unwrap_err();
+
+    let err = err.into_database_error().unwrap();
+
+    assert_eq!(err.kind(), Some(ErrorKind::CheckViolation));
+
+    Ok(())
+}

tests/mysql/setup.sql

@@ -6,3 +6,19 @@ CREATE TABLE tweet
     text       TEXT      NOT NULL,
     owner_id   BIGINT
 );
+
+CREATE TABLE tweet_reply
+(
+    id         BIGINT PRIMARY KEY AUTO_INCREMENT,
+    tweet_id   BIGINT    NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    text       TEXT      NOT NULL,
+    owner_id   BIGINT,
+    CONSTRAINT tweet_id_fk FOREIGN KEY (tweet_id) REFERENCES tweet(id)
+);
+
+CREATE TABLE products (
+    product_no INTEGER,
+    name TEXT,
+    price NUMERIC CHECK (price > 0)
+);

tests/postgres/error.rs

@@ -32,7 +32,7 @@ async fn it_fails_with_foreign_key_violation() -> anyhow::Result<()> {
     let mut tx = conn.begin().await?;
 
     let res: Result<_, sqlx::Error> =
-        sqlx::query("INSERT INTO tweet_reply (tweet, text) VALUES (1, 'Reply!');")
+        sqlx::query("INSERT INTO tweet_reply (tweet_id, text) VALUES (1, 'Reply!');")
             .execute(&mut tx)
             .await;
     let err = res.unwrap_err();

tests/postgres/setup.sql

@@ -24,7 +24,7 @@ CREATE TABLE tweet
 CREATE TABLE tweet_reply
 (
     id         BIGSERIAL PRIMARY KEY,
-    tweet      BIGINT REFERENCES tweet(id),
+    tweet_id   BIGINT      NOT NULL REFERENCES tweet(id),
     created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
     text       TEXT        NOT NULL,
     owner_id   BIGINT