test: add UTs for reporter and formatter

Author: emyann

src/validation/reporter.spec.ts

@@ -0,0 +1,70 @@
+import { morphism, createSchema } from '../morphism';
+import { string } from './validators';
+import { number } from './validators';
+import { formatter, reporter } from './reporter';
+import { getSymbolName } from '../helpers';
+
+describe('Reporter', () => {
+  describe('Formatter', () => {
+    it('should format a ValidationError to human readable message', () => {
+      const targetProperty = 'targetProperty';
+      const value = undefined;
+      const type = string;
+      const message = formatter({ targetProperty, value, type });
+      expect(message).toEqual(
+        `Invalid value ${value} supplied to : [⚠️ Schema With Type] at property ${targetProperty}. Expecting type ${getSymbolName(type)}`
+      );
+    });
+  });
+  describe('Validation', () => {
+    it('should report error on string undefined', () => {
+      interface S {
+        s1: string;
+      }
+      interface T {
+        t1: string;
+      }
+
+      const schema = createSchema<T, S>({ t1: { path: 's1', fn: val => val, type: string } });
+      const result = morphism(schema, JSON.parse('{}'));
+      const message = formatter({ targetProperty: 't1', value: undefined, type: string });
+      const errors = reporter(result);
+
+      expect(errors.length).toEqual(1);
+      expect(errors[0]).toBe(message);
+    });
+
+    it('should report error on number undefined', () => {
+      interface S {
+        s1: string;
+      }
+      interface T {
+        t1: number;
+      }
+
+      const schema = createSchema<T, S>({ t1: { path: 's1', fn: val => val, type: number } });
+      const result = morphism(schema, JSON.parse('{}'));
+      const message = formatter({ targetProperty: 't1', value: undefined, type: number });
+      const errors = reporter(result);
+
+      expect(errors.length).toEqual(1);
+      expect(errors[0]).toBe(message);
+    });
+
+    it('should parse number from string', () => {
+      interface S {
+        s1: string;
+      }
+      interface T {
+        t1: number;
+      }
+
+      const schema = createSchema<T, S>({ t1: { path: 's1', fn: val => val, type: number } });
+      const result = morphism(schema, JSON.parse('{ "s1": "1234" }'));
+      const errors = reporter(result);
+
+      expect(errors.length).toEqual(0);
+      expect(result).toEqual({ t1: 1234 });
+    });
+  });
+});