test(log_level): refactor

tests/log-level.test.ts

@@ -0,0 +1,73 @@
+import {expect, jest, test} from '@jest/globals';
+import * as log_level from '../src/log-level';
+
+describe('Logger', () => {
+    it('can be instantiated', () => {
+        //const logger = new log_level.Logger('test', 0);
+    })
+});
+
+describe('getLevelName', () => {
+    it('numeric to textual representation of built-ins', () => {
+        expect(
+            log_level.getLevelName(log_level.CRITICAL)
+        ).toBe('CRITICAL');
+        expect(
+            log_level.getLevelName(log_level.FATAL)
+        ).toBe('CRITICAL');
+        expect(
+            log_level.getLevelName(log_level.ERROR)
+        ).toBe('ERROR');
+        expect(
+            log_level.getLevelName(log_level.WARNING)
+        ).toBe('WARNING');
+        expect(
+            log_level.getLevelName(log_level.WARN)
+        ).toBe('WARNING');
+        expect(
+            log_level.getLevelName(log_level.INFO)
+        ).toBe('INFO');
+        expect(
+            log_level.getLevelName(log_level.DEBUG)
+        ).toBe('DEBUG');
+        expect(
+            log_level.getLevelName(log_level.NOTSET)
+        ).toBe('NOTSET');
+    });
+
+    it('textual to numeric representation of built-ins', () => {
+        expect(
+            log_level.getLevelName('CRITICAL')
+        ).toBe(log_level.CRITICAL);
+        expect(
+            log_level.getLevelName('FATAL')
+        ).toBe(`Level FATAL`);
+        expect(
+            log_level.getLevelName('ERROR')
+        ).toBe(log_level.ERROR);
+        expect(
+            log_level.getLevelName('WARNING')
+        ).toBe(log_level.WARNING);
+        expect(
+            log_level.getLevelName('WARN')
+        ).toBe('Level WARN');
+        expect(
+            log_level.getLevelName('INFO')
+        ).toBe(log_level.INFO);
+        expect(
+            log_level.getLevelName('DEBUG')
+        ).toBe(log_level.DEBUG);
+        expect(
+            log_level.getLevelName('NOTSET')
+        ).toBe(log_level.NOTSET);
+    });
+});
+
+
+describe('addLevelName', () => {
+    it('numeric to textual representation of built-ins', () => {
+        log_level.addLevelName(80, 'FOOBAR');
+        expect(log_level.getLevelName(80)).toBe('FOOBAR');
+        expect(log_level.getLevelName('FOOBAR')).toBe(80);
+    })
+});