feat(config): better errors for mislabeled fields

Author: abonander

sqlx-core/src/config/common.rs

@@ -3,7 +3,7 @@
 #[cfg_attr(
     feature = "sqlx-toml",
     derive(serde::Deserialize),
-    serde(default, rename_all = "kebab-case")
+    serde(default, rename_all = "kebab-case", deny_unknown_fields)
 )]
 pub struct Config {
     /// Override the database URL environment variable.

sqlx-core/src/config/macros.rs

@@ -5,7 +5,7 @@ use std::collections::BTreeMap;
 #[cfg_attr(
     feature = "sqlx-toml",
     derive(serde::Deserialize),
-    serde(default, rename_all = "kebab-case")
+    serde(default, rename_all = "kebab-case", deny_unknown_fields)
 )]
 pub struct Config {
     /// Specify which crates' types to use when types from multiple crates apply.

sqlx-core/src/config/migrate.rs

@@ -16,7 +16,7 @@ use std::collections::BTreeSet;
 #[cfg_attr(
     feature = "sqlx-toml",
     derive(serde::Deserialize),
-    serde(default, rename_all = "kebab-case")
+    serde(default, rename_all = "kebab-case", deny_unknown_fields)
 )]
 pub struct Config {
     /// Specify the names of schemas to create if they don't already exist.

sqlx-core/src/config/mod.rs

@@ -48,7 +48,7 @@ mod tests;
 #[cfg_attr(
     feature = "sqlx-toml",
     derive(serde::Deserialize),
-    serde(default, rename_all = "kebab-case")
+    serde(default, rename_all = "kebab-case", deny_unknown_fields)
 )]
 pub struct Config {
     /// Configuration shared by multiple components.
@@ -210,6 +210,9 @@ impl Config {
                     // Only returned if the file exists but the feature is not enabled.
                     panic!("{e}")
                 }
+                Err(ConfigError::Parse { error, path }) => {
+                    panic!("error parsing sqlx config {path:?}: {error}")
+                }
                 Err(e) => {
                     panic!("failed to read sqlx config: {e}")
                 }