1 files changed, 24 insertions, 0 deletions
diff --git a/__tests__/lib/numbers.test.ts b/__tests__/lib/numbers.test.ts
new file mode 100644
index 000000000..be92d6c0f
--- /dev/null
+++ b/__tests__/lib/numbers.test.ts
@@ -0,0 +1,24 @@
+import {clamp} from '../../src/lib/numbers'
+
+describe('clamp', () => {
+  const inputs: [number, number, number][] = [
+    [100, 0, 200],
+    [100, 0, 100],
+    [0, 0, 100],
+    [100, 0, -1],
+    [4, 1, 1],
+    [100, -100, 0],
+    [400, 100, -100],
+    [70, -1, 1],
+    [Infinity, Infinity, Infinity],
+  ]
+  const outputs = [100, 100, 0, -1, 1, 0, -100, 1, Infinity]
+
+  it('correctly clamps any given number and range', () => {
+    for (let i = 0; i < inputs.length; i++) {
+      const input = inputs[i]
+      const result = clamp(...input)
+      expect(result).toEqual(outputs[i])
+    }
+  })
+})