fix(*): Add severity, start and end column numbers for diagnostics, change warning to message

src/utils/getLintConfig.spec.ts

@@ -1,3 +1,4 @@
+import * as fileModule from '@sasjs/utils/file'
 import { LintConfig } from '../types/LintConfig'
 import { getLintConfig } from './getLintConfig'
 
@@ -7,4 +8,16 @@ describe('getLintConfig', () => {
 
     expect(config).toBeInstanceOf(LintConfig)
   })
+
+  it('should get the default config when a .sasjslint file is unavailable', async () => {
+    jest
+      .spyOn(fileModule, 'readFile')
+      .mockImplementationOnce(() => Promise.reject())
+
+    const config = await getLintConfig()
+
+    expect(config).toBeInstanceOf(LintConfig)
+    expect(config.fileLintRules.length).toEqual(1)
+    expect(config.lineLintRules.length).toEqual(2)
+  })
 })