refactor: move display test in separate file

This should make maintenance easier as the number of those files grows.

Also update the insta snapshots by running:
```
cargo insta test --accept --unreferenced delete
```

Author: cljoly

rusqlite_migration/src/tests/core.rs

@@ -573,28 +573,3 @@ fn test_pending_migrations_errors() -> Result<(), Box<dyn std::error::Error>> {
 
     Ok(())
 }
-
-#[test]
-fn test_display() {
-    insta::assert_snapshot!("up_only", m_valid0_up());
-    insta::assert_snapshot!("up_only_alt", format!("{:#}", m_valid0_up()));
-
-    insta::assert_snapshot!("up_down", m_valid0_down());
-    insta::assert_snapshot!("up_down_alt", format!("{:#}", m_valid0_down()));
-
-    insta::assert_snapshot!("up_down_fk", m_valid_fk_down());
-    insta::assert_snapshot!("up_down_fk_alt", format!("{:#}", m_valid_fk_down()));
-
-    let everything = M {
-        up: "UP",
-        up_hook: Some(Box::new(|_: &Transaction| Ok(()))),
-        down: Some("DOWN"),
-        down_hook: Some(Box::new(|_: &Transaction| Ok(()))),
-        foreign_key_check: true,
-        comment: Some("Comment, likely a filename in practice!"),
-    };
-    insta::assert_snapshot!("everything", everything);
-    insta::assert_debug_snapshot!("everything_debug", everything);
-    insta::assert_compact_debug_snapshot!("everything_compact_debug", everything);
-    insta::assert_snapshot!("everything_alt", format!("{everything:#}"));
-}

rusqlite_migration/src/tests/display.rs

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright Clément Joly and contributors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use insta::assert_snapshot;
+
+use crate::tests::helpers::{all_valid_down, m_valid0_down, m_valid0_up, m_valid_fk_down};
+use crate::*;
+
+#[test]
+fn test_m_display() {
+    insta::assert_snapshot!("up_only", m_valid0_up());
+    insta::assert_snapshot!("up_only_alt", format!("{:#}", m_valid0_up()));
+
+    insta::assert_snapshot!("up_down", m_valid0_down());
+    insta::assert_snapshot!("up_down_alt", format!("{:#}", m_valid0_down()));
+
+    insta::assert_snapshot!("up_down_fk", m_valid_fk_down());
+    insta::assert_snapshot!("up_down_fk_alt", format!("{:#}", m_valid_fk_down()));
+
+    let everything = M {
+        up: "UP",
+        up_hook: Some(Box::new(|_: &Transaction| Ok(()))),
+        down: Some("DOWN"),
+        down_hook: Some(Box::new(|_: &Transaction| Ok(()))),
+        foreign_key_check: true,
+        comment: Some("Comment, likely a filename in practice!"),
+    };
+    insta::assert_snapshot!("everything", everything);
+    insta::assert_debug_snapshot!("everything_debug", everything);
+    insta::assert_compact_debug_snapshot!("everything_compact_debug", everything);
+    insta::assert_snapshot!("everything_alt", format!("{everything:#}"));
+}

rusqlite_migration/src/tests/mod.rs

@@ -17,4 +17,5 @@
 mod builder;
 
 mod core;
+mod display;
 mod helpers;

rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__core__everything.snap renamed to rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__display__everything.snap

@@ -1,5 +1,5 @@
 ---
-source: rusqlite_migration/src/tests/core.rs
+source: rusqlite_migration/src/tests/display.rs
 expression: everything
 snapshot_kind: text
 ---

rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__core__everything_alt.snap renamed to rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__display__everything_alt.snap

@@ -1,5 +1,5 @@
 ---
-source: rusqlite_migration/src/tests/core.rs
+source: rusqlite_migration/src/tests/display.rs
 expression: "format!(\"{everything:#}\")"
 snapshot_kind: text
 ---

rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__core__everything_compact_debug.snap renamed to rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__display__everything_compact_debug.snap

@@ -1,5 +1,5 @@
 ---
-source: rusqlite_migration/src/tests/core.rs
+source: rusqlite_migration/src/tests/display.rs
 expression: everything
 snapshot_kind: text
 ---

rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__core__everything_debug.snap renamed to rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__display__everything_debug.snap

@@ -1,5 +1,5 @@
 ---
-source: rusqlite_migration/src/tests/core.rs
+source: rusqlite_migration/src/tests/display.rs
 expression: everything
 snapshot_kind: text
 ---

rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__core__up_down.snap renamed to rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__display__up_down.snap

@@ -1,5 +1,5 @@
 ---
-source: rusqlite_migration/src/tests/core.rs
+source: rusqlite_migration/src/tests/display.rs
 expression: m_valid0_down()
 snapshot_kind: text
 ---

rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__core__up_down_alt.snap renamed to rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__display__up_down_alt.snap

@@ -1,5 +1,5 @@
 ---
-source: rusqlite_migration/src/tests/core.rs
+source: rusqlite_migration/src/tests/display.rs
 expression: "format!(\"{:#}\", m_valid0_down())"
 snapshot_kind: text
 ---

rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__core__up_down_fk.snap renamed to rusqlite_migration/src/tests/snapshots/rusqlite_migration__tests__display__up_down_fk.snap

@@ -1,5 +1,5 @@
 ---
-source: rusqlite_migration/src/tests/core.rs
+source: rusqlite_migration/src/tests/display.rs
 expression: m_valid_fk_down()
 snapshot_kind: text
 ---