test: change "single_model_file" to be compile-able

Cargo.toml

@@ -51,5 +51,6 @@ members = [
     "test/simple_table_mysql",
     "test/simple_table_sqlite",
     "test/custom_model_and_schema_path",
+    "test/single_model_file",
 ]
 resolver = "2"

test/single_model_file/Cargo.toml

@@ -0,0 +1,16 @@
+[lib]
+path = "lib.rs"
+
+[package]
+name = "single_model_file"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+diesel = { version = "*", default-features = false, features = [
+    "postgres",
+    "chrono",
+] }
+dsync = { path = "../../" }
+chrono = { version = "*", features = ["serde"] }
+serde = { version = "*", features = ["derive"] }

test/single_model_file/lib.rs

@@ -0,0 +1,2 @@
+pub mod models;
+pub mod schema;

test/single_model_file/models/table1.rs

@@ -4,7 +4,7 @@ use diesel::*;
 use crate::schema::*;
 use diesel::QueryResult;
 
-pub type ConnectionType = diesel::r2d2::PooledConnection<diesel::r2d2::ConnectionManager<diesel::prelude::PgConnection>>;
+pub type ConnectionType = diesel::prelude::PgConnection;
 
 /// Struct representing a row in table `table1`
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize, Queryable, Selectable)]

test/single_model_file/models/table2.rs

@@ -4,7 +4,7 @@ use diesel::*;
 use crate::schema::*;
 use diesel::QueryResult;
 
-pub type ConnectionType = diesel::r2d2::PooledConnection<diesel::r2d2::ConnectionManager<diesel::prelude::PgConnection>>;
+pub type ConnectionType = diesel::prelude::PgConnection;
 
 /// Struct representing a row in table `table2`
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize, Queryable, Selectable)]

test/single_model_file/test.sh

@@ -4,4 +4,5 @@ SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
 
 cd $SCRIPT_DIR
 
-cargo run -- -i schema.rs -o models -g id -g created_at -g updated_at -c "diesel::r2d2::PooledConnection<diesel::r2d2::ConnectionManager<diesel::prelude::PgConnection>>" --single-model-file
+cargo run --manifest-path ../../Cargo.toml -- \
+-i schema.rs -o models -g id -g created_at -g updated_at -c "diesel::prelude::PgConnection" --single-model-file