Replace template1 with postgres:///template1

Author: hos

__tests__/__snapshots__/settings.test.ts.snap

@@ -38,7 +38,7 @@ exports[`actions is backwards-compatible with untagged command specs 1`] = `
   "manageGraphileMigrateSchema": true,
   "migrationsFolder": "./migrations",
   "placeholders": undefined,
-  "rootConnectionString": "template1",
+  "rootConnectionString": "postgres:///template1",
   "shadowConnectionString": undefined,
   "shadowDatabaseName": undefined,
 }
@@ -79,7 +79,7 @@ exports[`actions parses SQL actions 1`] = `
   "manageGraphileMigrateSchema": true,
   "migrationsFolder": "./migrations",
   "placeholders": undefined,
-  "rootConnectionString": "template1",
+  "rootConnectionString": "postgres:///template1",
   "shadowConnectionString": undefined,
   "shadowDatabaseName": undefined,
 }
@@ -115,7 +115,7 @@ exports[`actions parses command actions 1`] = `
   "manageGraphileMigrateSchema": true,
   "migrationsFolder": "./migrations",
   "placeholders": undefined,
-  "rootConnectionString": "template1",
+  "rootConnectionString": "postgres:///template1",
   "shadowConnectionString": undefined,
   "shadowDatabaseName": undefined,
 }
@@ -159,7 +159,7 @@ exports[`actions parses mixed actions 1`] = `
   "manageGraphileMigrateSchema": true,
   "migrationsFolder": "./migrations",
   "placeholders": undefined,
-  "rootConnectionString": "template1",
+  "rootConnectionString": "postgres:///template1",
   "shadowConnectionString": undefined,
   "shadowDatabaseName": undefined,
 }
@@ -200,7 +200,7 @@ exports[`actions parses string values into SQL actions 1`] = `
   "manageGraphileMigrateSchema": true,
   "migrationsFolder": "./migrations",
   "placeholders": undefined,
-  "rootConnectionString": "template1",
+  "rootConnectionString": "postgres:///template1",
   "shadowConnectionString": undefined,
   "shadowDatabaseName": undefined,
 }

__tests__/actions.test.ts

@@ -93,7 +93,9 @@ it("runs sql afterReset action with correct connection string when root", async
   mockedWithClient.mockClear();
   await executeActions(parsedSettings, false, parsedSettings.afterReset);
   expect(mockedWithClient).toHaveBeenCalledTimes(1);
-  expect(mockedWithClient.mock.calls[0][0]).toBe(TEST_DATABASE_NAME);
+  expect(mockedWithClient.mock.calls[0][0]).toBe(
+    `postgres:///${TEST_DATABASE_NAME}`,
+  );
 });
 
 it("runs command afterReset action with correct env vars when root", async () => {

__tests__/settings.test.ts

@@ -362,12 +362,12 @@ describe("gmrc from JS", () => {
     mockFs({
       [DEFAULT_GMRCJS_PATH]: /* JavaScript */ `\
 module.exports = {
-  connectionString: "postgres://dbowner:password@host:5432/gmrcjs_test",
+  connectionString: "postgres:///dbowner:password@host:5432/gmrcjs_test",
 };`,
     });
     const settings = await getSettings();
     expect(settings.connectionString).toEqual(
-      "postgres://dbowner:password@host:5432/gmrcjs_test",
+      "postgres:///dbowner:password@host:5432/gmrcjs_test",
     );
     mockFs.restore();
   });

src/settings.ts

@@ -157,7 +157,8 @@ export async function parseSettings(
   const rootConnectionString = await check(
     "rootConnectionString",
     (
-      rawRootConnectionString = process.env.ROOT_DATABASE_URL || "template1",
+      rawRootConnectionString = process.env.ROOT_DATABASE_URL ||
+        "postgres:///template1",
     ): string => {
       if (typeof rawRootConnectionString !== "string") {
         throw new Error(