tests: Remove normalization in constructor (has no effect) (#75)

* tests: Remove normalization in constructor (has no effect)

Also, add an example showing how to normalize a value

Author: jessealama

README.md

@@ -8,7 +8,7 @@
 -   division (`divide`)
 -   remainder (`remainder`)
 -   rounding (`round`)
--   `toString`
+-   `toString` emitting both decimal and exponential syntax (default is decimal)
 
 ## Implementation
 

examples/normalize.js

@@ -0,0 +1,6 @@
+function normalize(d) {
+    // Decimal128 object
+    return d.toString({ normalize: true });
+}
+
+export { normalize };

tests/add.test.js

@@ -58,10 +58,8 @@ describe("addition", () => {
     describe("non-normalized", () => {
         test("one point zero plus one point zero", () => {
             expect(
-                new Decimal128("1.0", { normalize: false })
-                    .add(new Decimal128("1.0", { normalize: false }), {
-                        normalize: false,
-                    })
+                new Decimal128("1.0")
+                    .add(new Decimal128("1.0"))
                     .toString({ normalize: false })
             ).toStrictEqual("2.0");
         });
@@ -131,7 +129,7 @@ describe("examples from the General Decimal Arithmetic specification", () => {
     test("example one", () => {
         expect(
             new Decimal128("12")
-                .add(new Decimal128("7.00", { normalize: false }))
+                .add(new Decimal128("7.00"))
                 .toString({ normalize: false })
         ).toStrictEqual("19.00");
     });

tests/constructor.test.js

@@ -130,7 +130,7 @@ describe("constructor", () => {
             expect(val.toString()).toStrictEqual(s);
         });
         test("decimal number with trailing zero", () => {
-            let val = new Decimal128("0.67890", { normalize: false });
+            let val = new Decimal128("0.67890");
             expect(val.significand).toStrictEqual("67890");
             expect(val.exponent).toStrictEqual(-5);
         });

tests/multiply.test.js

@@ -164,7 +164,7 @@ describe("multiplication", () => {
 describe("examples from the General Decimal Arithmetic specification", () => {
     test("example one", () => {
         expect(
-            new Decimal128("1.20", { normalize: false })
+            new Decimal128("1.20")
                 .multiply(new Decimal128("3"))
                 .toString({ normalize: false })
         ).toStrictEqual("3.60");
@@ -190,7 +190,7 @@ describe("examples from the General Decimal Arithmetic specification", () => {
         // slightly modified because we have more precision
         expect(
             new Decimal128("654321")
-                .multiply(new Decimal128("654321"), { normalize: false })
+                .multiply(new Decimal128("654321"))
                 .toString({ format: "exponential" })
         ).toStrictEqual("4.28135971041E+11");
     });

tests/subtract.test.js

@@ -142,7 +142,7 @@ describe("examples from the General Decimal Arithmetic specification", () => {
     test("example two", () => {
         expect(
             new Decimal128("1.3")
-                .subtract(new Decimal128("1.30", { normalize: false }))
+                .subtract(new Decimal128("1.30"))
                 .toString({ normalize: false })
         ).toStrictEqual("0.00");
     });