Added basic tests for @tryghost/database-info

- these check a few of the imports and static functions

ghost/database-info/package.json

@@ -20,6 +20,7 @@
   },
   "devDependencies": {
     "c8": "7.11.0",
+    "knex": "1.0.3",
     "mocha": "9.1.4",
     "should": "13.2.3",
     "sinon": "12.0.1"

ghost/database-info/test/database-info.test.js

@@ -0,0 +1,53 @@
+// Switch these lines once there are useful utils
+// const testUtils = require('./utils');
+require('./utils');
+
+const Knex = require('knex');
+const DatabaseInfo = require('../');
+
+describe('DatabaseInfo', function () {
+    it('should export a class', function () {
+        DatabaseInfo.should.be.a.class;
+    });
+
+    it('can construct the class', function () {
+        const knex = Knex({
+            client: 'sqlite3'
+        });
+
+        const databaseInfo = new DatabaseInfo(knex);
+        databaseInfo.should.be.an.instanceOf(DatabaseInfo);
+    });
+
+    it('recognises sqlite3 client is SQLite', function () {
+        const knex = Knex({
+            client: 'sqlite3'
+        });
+
+        DatabaseInfo.isSQLite(knex).should.be.true();
+    });
+
+    it('recognises better-sqlite3 client is SQLite', function () {
+        const knex = Knex({
+            client: 'better-sqlite3'
+        });
+
+        DatabaseInfo.isSQLite(knex).should.be.true();
+    });
+
+    it('recognises mysql client is MySQL', function () {
+        const knex = Knex({
+            client: 'mysql'
+        });
+
+        DatabaseInfo.isMySQL(knex).should.be.true();
+    });
+
+    it('recognises mysql2 client is MySQL', function () {
+        const knex = Knex({
+            client: 'mysql2'
+        });
+
+        DatabaseInfo.isMySQL(knex).should.be.true();
+    });
+});

ghost/database-info/test/hello.test.js

@@ -1,10 +0,0 @@
-// Switch these lines once there are useful utils
-// const testUtils = require('./utils');
-require('./utils');
-
-describe('Hello world', function () {
-    it('Runs a test', function () {
-        // TODO: Write me!
-        'hello'.should.eql('hello');
-    });
-});