Add tests of composite types to Aurora (#259)

### What

This PR extends the tests of composite types to cover Aurora.

This is a follow-up to #257, and will be rebased once that is merged.

### How

In order to standardise the (rare) management we need to be able to do
on our Aurora test instance this PR adds a script that inserts all the
test data currently in use. Currently, this means: The chinook dataset,
and definitions of composite types.

---------

Co-authored-by: Samir Talwar <[email protected]>

Author: plcplc

crates/tests/databases-tests/src/aurora/query_tests.rs

@@ -40,28 +40,24 @@ mod basic {
     }
 
     #[tokio::test]
-    #[ignore = "Pending update of aurora test database"]
     async fn select_composite_column_simple() {
         let result = run_query(create_router().await, "select_composite_column_simple").await;
         insta::assert_json_snapshot!(result);
     }
 
     #[tokio::test]
-    #[ignore = "Pending update of aurora test database"]
     async fn select_composite_column_complex() {
         let result = run_query(create_router().await, "select_composite_column_complex").await;
         insta::assert_json_snapshot!(result);
     }
 
     #[tokio::test]
-    #[ignore = "Pending update of aurora test database"]
     async fn select_composite_variable_simple() {
         let result = run_query(create_router().await, "select_composite_variable_simple").await;
         insta::assert_json_snapshot!(result);
     }
 
     #[tokio::test]
-    #[ignore = "Pending update of aurora test database"]
     async fn select_composite_variable_complex() {
         let result = run_query(create_router().await, "select_composite_variable_complex").await;
         insta::assert_json_snapshot!(result);

crates/tests/databases-tests/src/aurora/snapshots/databases_tests__aurora__query_tests__basic__select_composite_column_complex.snap

@@ -0,0 +1,22 @@
+---
+source: crates/tests/databases-tests/src/aurora/query_tests.rs
+expression: result
+---
+[
+  {
+    "rows": [
+      {
+        "result": {
+          "name": {
+            "first_name": "John",
+            "last_name": "Doe"
+          },
+          "address": {
+            "address_line_1": "Somstreet 159",
+            "address_line_2": "Second door to the right"
+          }
+        }
+      }
+    ]
+  }
+]

crates/tests/databases-tests/src/aurora/snapshots/databases_tests__aurora__query_tests__basic__select_composite_column_simple.snap

@@ -0,0 +1,16 @@
+---
+source: crates/tests/databases-tests/src/aurora/query_tests.rs
+expression: result
+---
+[
+  {
+    "rows": [
+      {
+        "result": {
+          "address_line_1": "Somstreet 159",
+          "address_line_2": "Second door to the right"
+        }
+      }
+    ]
+  }
+]

crates/tests/databases-tests/src/aurora/snapshots/databases_tests__aurora__query_tests__basic__select_composite_variable_complex.snap

@@ -0,0 +1,38 @@
+---
+source: crates/tests/databases-tests/src/aurora/query_tests.rs
+expression: result
+---
+[
+  {
+    "rows": [
+      {
+        "result": {
+          "name": {
+            "first_name": "John",
+            "last_name": "Doe"
+          },
+          "address": {
+            "address_line_1": "Somstreet 159",
+            "address_line_2": "Second door to the right"
+          }
+        }
+      }
+    ]
+  },
+  {
+    "rows": [
+      {
+        "result": {
+          "name": {
+            "first_name": "Jane",
+            "last_name": "Doe"
+          },
+          "address": {
+            "address_line_1": "Somstreet 159",
+            "address_line_2": "Second door to the right"
+          }
+        }
+      }
+    ]
+  }
+]

crates/tests/databases-tests/src/aurora/snapshots/databases_tests__aurora__query_tests__basic__select_composite_variable_simple.snap

@@ -0,0 +1,26 @@
+---
+source: crates/tests/databases-tests/src/aurora/query_tests.rs
+expression: result
+---
+[
+  {
+    "rows": [
+      {
+        "result": {
+          "address_line_1": "Somstreet 159",
+          "address_line_2": "Second door to the right"
+        }
+      }
+    ]
+  },
+  {
+    "rows": [
+      {
+        "result": {
+          "address_line_1": "Somstreet 159",
+          "address_line_2": "Second door to the right"
+        }
+      }
+    ]
+  }
+]

scripts/reinitialize-aurora.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+set -e -u -o pipefail
+
+# This shell script reinitializes the aurora test database.
+# The environment variable AURORA_CONNECTION_STRING (typically set in
+# .envrc.local) is assumed to hold the authenticated connection string to the
+# writable aurora instance to act on.
+
+# In order to avoid accidental loss of data the database must be suitably empty before proceeding.
+
+number_of_existing_relations="$(
+  psql "$AURORA_CONNECTION_STRING" -t <<QUERY
+SELECT
+  COUNT(*)
+FROM pg_class
+WHERE
+  relnamespace = 'public'::regnamespace
+QUERY
+)"
+
+if [ "$number_of_existing_relations" != 0 ];
+then
+  echo "There appears to be ${number_of_existing_relations} relations still left in the \"public\" namespace."
+  echo 'Bailing out.'
+  exit 1
+fi
+
+psql "$AURORA_CONNECTION_STRING" <<DOC
+
+-- Ingesting the Chinook dataset takes about 15 minutes on my machine. I put
+-- this down to the file using one INSERT statement per row of data rather than
+-- the more efficient COPY command.
+-- \i static/chinook-postgres.sql
+
+\i static/composite-types-simple.sql
+\i static/composite-types-complex.sql
+
+DOC