Add toIntegralNumber to numeric.js

[Pisces] / numeric.test.js

diff --git a/numeric.test.js b/numeric.test.js
index 6c58d04d7971187b2ca04d5fbabfb97aa29bb92b..dfb806301bbf7a3587cce3bc98b308664787b055 100644 (file)
--- a/numeric.test.js
+++ b/numeric.test.js
@@ -25,6 +25,7 @@ import {
   toBigInt,
   toFloat32,
   toIntegerOrInfinity,
+  toIntegralNumber,
   toIntN,
   toNumber,
   toNumeric,
@@ -189,7 +190,37 @@ describe("toIntegerOrInfinity", () => {
   });
 
   it("[[Call]] returns negative infinity for negative infinity", () => {
-    assertStrictEquals(toIntegerOrInfinity(Infinity), Infinity);
+    assertStrictEquals(toIntegerOrInfinity(-Infinity), -Infinity);
+  });
+
+  it("[[Call]] works with big·ints", () => {
+    assertStrictEquals(toIntegerOrInfinity(2n), 2);
+  });
+});
+
+describe("toIntegralNumber", () => {
+  it("[[Call]] converts nan to zero", () => {
+    assertStrictEquals(toIntegralNumber(NaN), 0);
+  });
+
+  it("[[Call]] converts negative zero to positive zero", () => {
+    assertStrictEquals(toIntegralNumber(-0), 0);
+  });
+
+  it("[[Call]] drops the fractional part of negative numbers", () => {
+    assertStrictEquals(toIntegralNumber(-1.79), -1);
+  });
+
+  it("[[Call]] returns zero for infinity", () => {
+    assertStrictEquals(toIntegralNumber(Infinity), 0);
+  });
+
+  it("[[Call]] returns zero for negative infinity", () => {
+    assertStrictEquals(toIntegralNumber(-Infinity), 0);
+  });
+
+  it("[[Call]] works with big·ints", () => {
+    assertStrictEquals(toIntegralNumber(2n), 2);
   });
 });