Add extra tests

Tests for interaction with `no_reorder` and `merge_imports`.

Author: MattX

tests/source/group_imports-merge_imports.rs

@@ -0,0 +1,17 @@
+// rustfmt-group_imports: StdExternalCrate
+// rustfmt-merge_imports: true
+use chrono::Utc;
+use super::update::convert_publish_payload;
+
+use juniper::{FieldError, FieldResult};
+use uuid::Uuid;
+use alloc::alloc::Layout;
+
+use std::sync::Arc;
+use alloc::vec::Vec;
+
+use broker::database::PooledConnection;
+
+use super::schema::{Context, Payload};
+use core::f32;
+use crate::models::Event;

tests/source/group_imports-no_reorder.rs

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+// rustfmt-group_imports: StdExternalCrate
+// rustfmt-reorder_imports: false
+
+// group_imports has no effect when reorder_imports is disabled.
+
+use chrono::Utc;
+use super::update::convert_publish_payload;
+
+use juniper::{FieldError, FieldResult};
+use uuid::Uuid;
+use alloc::alloc::Layout;
+
+use std::sync::Arc;
+
+use broker::database::PooledConnection;
+
+use super::schema::{Context, Payload};
+use core::f32;
+use crate::models::Event;

tests/target/group_imports-merge_imports.rs

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+// rustfmt-group_imports: StdExternalCrate
+// rustfmt-merge_imports: true
+use alloc::{alloc::Layout, vec::Vec};
+use core::f32;
+use std::sync::Arc;
+
+use broker::database::PooledConnection;
+use chrono::Utc;
+use juniper::{FieldError, FieldResult};
+use uuid::Uuid;
+
+use super::{
+    schema::{Context, Payload},
+    update::convert_publish_payload,
+};
+use crate::models::Event;

tests/target/group_imports-no_reorder.rs

@@ -0,0 +1,19 @@
+// rustfmt-group_imports: StdExternalCrate
+// rustfmt-reorder_imports: false
+
+// group_imports has no effect when reorder_imports is disabled.
+
+use chrono::Utc;
+use super::update::convert_publish_payload;
+
+use juniper::{FieldError, FieldResult};
+use uuid::Uuid;
+use alloc::alloc::Layout;
+
+use std::sync::Arc;
+
+use broker::database::PooledConnection;
+
+use super::schema::{Context, Payload};
+use core::f32;
+use crate::models::Event;