isNumber test

primer · Apr 19, 2024 · e53ec2f · e53ec2f
1 parent b21bcd4
commit e53ec2f
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/src/filters/isNumber.test.ts b/src/filters/isNumber.test.ts
@@ -0,0 +1,18 @@
+import {getMockToken} from '../test-utilities'
+import {isNumber} from './isNumber'
+
+describe('Filter: isNumber', () => {
+  it('returns true if $type property is `number`', () => {
+    expect(isNumber(getMockToken({$type: 'number'}))).toStrictEqual(true)
+  })
+
+  it('returns false if $type property is not `number`', () => {
+    expect(isNumber(getMockToken({$type: 'pumpkin'}))).toStrictEqual(false)
+  })
+
+  it('returns false if $type property is falsy', () => {
+    expect(isNumber(getMockToken({$type: false}))).toStrictEqual(false)
+    expect(isNumber(getMockToken({$type: undefined}))).toStrictEqual(false)
+    expect(isNumber(getMockToken({$type: null}))).toStrictEqual(false)
+  })
+})