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Add tests for Decimal comparison methods

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willclarktech 2020-06-10 13:40:57 +01:00
parent 8fbb7d4bcc
commit 0ae83b0657
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1 changed files with 210 additions and 0 deletions
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210
packages/math/src/decimal.spec.ts
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@ -210,4 +210,214 @@ describe("Decimal", () => {
expect(() => zero.plus(Decimal.fromUserInput("1", 7))).toThrowError(/do not match/i);
});
});
describe("equals", () => {
it("returns correct values", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(zero.equals(Decimal.fromUserInput("0", 5))).toEqual(true);
expect(zero.equals(Decimal.fromUserInput("1", 5))).toEqual(false);
expect(zero.equals(Decimal.fromUserInput("2", 5))).toEqual(false);
expect(zero.equals(Decimal.fromUserInput("2.8", 5))).toEqual(false);
expect(zero.equals(Decimal.fromUserInput("0.12345", 5))).toEqual(false);
const one = Decimal.fromUserInput("1", 5);
expect(one.equals(Decimal.fromUserInput("0", 5))).toEqual(false);
expect(one.equals(Decimal.fromUserInput("1", 5))).toEqual(true);
expect(one.equals(Decimal.fromUserInput("2", 5))).toEqual(false);
expect(one.equals(Decimal.fromUserInput("2.8", 5))).toEqual(false);
expect(one.equals(Decimal.fromUserInput("0.12345", 5))).toEqual(false);
const oneDotFive = Decimal.fromUserInput("1.5", 5);
expect(oneDotFive.equals(Decimal.fromUserInput("0", 5))).toEqual(false);
expect(oneDotFive.equals(Decimal.fromUserInput("1", 5))).toEqual(false);
expect(oneDotFive.equals(Decimal.fromUserInput("1.5", 5))).toEqual(true);
expect(oneDotFive.equals(Decimal.fromUserInput("2", 5))).toEqual(false);
expect(oneDotFive.equals(Decimal.fromUserInput("2.8", 5))).toEqual(false);
expect(oneDotFive.equals(Decimal.fromUserInput("0.12345", 5))).toEqual(false);
// original value remain unchanged
expect(zero.toString()).toEqual("0");
expect(one.toString()).toEqual("1");
expect(oneDotFive.toString()).toEqual("1.5");
});
it("throws for different fractional digits", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(() => zero.equals(Decimal.fromUserInput("1", 1))).toThrowError(/do not match/i);
expect(() => zero.equals(Decimal.fromUserInput("1", 2))).toThrowError(/do not match/i);
expect(() => zero.equals(Decimal.fromUserInput("1", 3))).toThrowError(/do not match/i);
expect(() => zero.equals(Decimal.fromUserInput("1", 4))).toThrowError(/do not match/i);
expect(() => zero.equals(Decimal.fromUserInput("1", 6))).toThrowError(/do not match/i);
expect(() => zero.equals(Decimal.fromUserInput("1", 7))).toThrowError(/do not match/i);
});
});
describe("isLessThan", () => {
it("returns correct values", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(zero.isLessThan(Decimal.fromUserInput("0", 5))).toEqual(false);
expect(zero.isLessThan(Decimal.fromUserInput("1", 5))).toEqual(true);
expect(zero.isLessThan(Decimal.fromUserInput("2", 5))).toEqual(true);
expect(zero.isLessThan(Decimal.fromUserInput("2.8", 5))).toEqual(true);
expect(zero.isLessThan(Decimal.fromUserInput("0.12345", 5))).toEqual(true);
const one = Decimal.fromUserInput("1", 5);
expect(one.isLessThan(Decimal.fromUserInput("0", 5))).toEqual(false);
expect(one.isLessThan(Decimal.fromUserInput("1", 5))).toEqual(false);
expect(one.isLessThan(Decimal.fromUserInput("2", 5))).toEqual(true);
expect(one.isLessThan(Decimal.fromUserInput("2.8", 5))).toEqual(true);
expect(one.isLessThan(Decimal.fromUserInput("0.12345", 5))).toEqual(false);
const oneDotFive = Decimal.fromUserInput("1.5", 5);
expect(oneDotFive.isLessThan(Decimal.fromUserInput("0", 5))).toEqual(false);
expect(oneDotFive.isLessThan(Decimal.fromUserInput("1", 5))).toEqual(false);
expect(oneDotFive.isLessThan(Decimal.fromUserInput("1.5", 5))).toEqual(false);
expect(oneDotFive.isLessThan(Decimal.fromUserInput("2", 5))).toEqual(true);
expect(oneDotFive.isLessThan(Decimal.fromUserInput("2.8", 5))).toEqual(true);
expect(oneDotFive.isLessThan(Decimal.fromUserInput("0.12345", 5))).toEqual(false);
// original value remain unchanged
expect(zero.toString()).toEqual("0");
expect(one.toString()).toEqual("1");
expect(oneDotFive.toString()).toEqual("1.5");
});
it("throws for different fractional digits", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(() => zero.isLessThan(Decimal.fromUserInput("1", 1))).toThrowError(/do not match/i);
expect(() => zero.isLessThan(Decimal.fromUserInput("1", 2))).toThrowError(/do not match/i);
expect(() => zero.isLessThan(Decimal.fromUserInput("1", 3))).toThrowError(/do not match/i);
expect(() => zero.isLessThan(Decimal.fromUserInput("1", 4))).toThrowError(/do not match/i);
expect(() => zero.isLessThan(Decimal.fromUserInput("1", 6))).toThrowError(/do not match/i);
expect(() => zero.isLessThan(Decimal.fromUserInput("1", 7))).toThrowError(/do not match/i);
});
});
describe("isLessThanOrEqual", () => {
it("returns correct values", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(zero.isLessThanOrEqual(Decimal.fromUserInput("0", 5))).toEqual(true);
expect(zero.isLessThanOrEqual(Decimal.fromUserInput("1", 5))).toEqual(true);
expect(zero.isLessThanOrEqual(Decimal.fromUserInput("2", 5))).toEqual(true);
expect(zero.isLessThanOrEqual(Decimal.fromUserInput("2.8", 5))).toEqual(true);
expect(zero.isLessThanOrEqual(Decimal.fromUserInput("0.12345", 5))).toEqual(true);
const one = Decimal.fromUserInput("1", 5);
expect(one.isLessThanOrEqual(Decimal.fromUserInput("0", 5))).toEqual(false);
expect(one.isLessThanOrEqual(Decimal.fromUserInput("1", 5))).toEqual(true);
expect(one.isLessThanOrEqual(Decimal.fromUserInput("2", 5))).toEqual(true);
expect(one.isLessThanOrEqual(Decimal.fromUserInput("2.8", 5))).toEqual(true);
expect(one.isLessThanOrEqual(Decimal.fromUserInput("0.12345", 5))).toEqual(false);
const oneDotFive = Decimal.fromUserInput("1.5", 5);
expect(oneDotFive.isLessThanOrEqual(Decimal.fromUserInput("0", 5))).toEqual(false);
expect(oneDotFive.isLessThanOrEqual(Decimal.fromUserInput("1", 5))).toEqual(false);
expect(oneDotFive.isLessThanOrEqual(Decimal.fromUserInput("1.5", 5))).toEqual(true);
expect(oneDotFive.isLessThanOrEqual(Decimal.fromUserInput("2", 5))).toEqual(true);
expect(oneDotFive.isLessThanOrEqual(Decimal.fromUserInput("2.8", 5))).toEqual(true);
expect(oneDotFive.isLessThanOrEqual(Decimal.fromUserInput("0.12345", 5))).toEqual(false);
// original value remain unchanged
expect(zero.toString()).toEqual("0");
expect(one.toString()).toEqual("1");
expect(oneDotFive.toString()).toEqual("1.5");
});
it("throws for different fractional digits", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(() => zero.isLessThanOrEqual(Decimal.fromUserInput("1", 1))).toThrowError(/do not match/i);
expect(() => zero.isLessThanOrEqual(Decimal.fromUserInput("1", 2))).toThrowError(/do not match/i);
expect(() => zero.isLessThanOrEqual(Decimal.fromUserInput("1", 3))).toThrowError(/do not match/i);
expect(() => zero.isLessThanOrEqual(Decimal.fromUserInput("1", 4))).toThrowError(/do not match/i);
expect(() => zero.isLessThanOrEqual(Decimal.fromUserInput("1", 6))).toThrowError(/do not match/i);
expect(() => zero.isLessThanOrEqual(Decimal.fromUserInput("1", 7))).toThrowError(/do not match/i);
});
});
describe("isGreaterThan", () => {
it("returns correct values", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(zero.isGreaterThan(Decimal.fromUserInput("0", 5))).toEqual(false);
expect(zero.isGreaterThan(Decimal.fromUserInput("1", 5))).toEqual(false);
expect(zero.isGreaterThan(Decimal.fromUserInput("2", 5))).toEqual(false);
expect(zero.isGreaterThan(Decimal.fromUserInput("2.8", 5))).toEqual(false);
expect(zero.isGreaterThan(Decimal.fromUserInput("0.12345", 5))).toEqual(false);
const one = Decimal.fromUserInput("1", 5);
expect(one.isGreaterThan(Decimal.fromUserInput("0", 5))).toEqual(true);
expect(one.isGreaterThan(Decimal.fromUserInput("1", 5))).toEqual(false);
expect(one.isGreaterThan(Decimal.fromUserInput("2", 5))).toEqual(false);
expect(one.isGreaterThan(Decimal.fromUserInput("2.8", 5))).toEqual(false);
expect(one.isGreaterThan(Decimal.fromUserInput("0.12345", 5))).toEqual(true);
const oneDotFive = Decimal.fromUserInput("1.5", 5);
expect(oneDotFive.isGreaterThan(Decimal.fromUserInput("0", 5))).toEqual(true);
expect(oneDotFive.isGreaterThan(Decimal.fromUserInput("1", 5))).toEqual(true);
expect(oneDotFive.isGreaterThan(Decimal.fromUserInput("1.5", 5))).toEqual(false);
expect(oneDotFive.isGreaterThan(Decimal.fromUserInput("2", 5))).toEqual(false);
expect(oneDotFive.isGreaterThan(Decimal.fromUserInput("2.8", 5))).toEqual(false);
expect(oneDotFive.isGreaterThan(Decimal.fromUserInput("0.12345", 5))).toEqual(true);
// original value remain unchanged
expect(zero.toString()).toEqual("0");
expect(one.toString()).toEqual("1");
expect(oneDotFive.toString()).toEqual("1.5");
});
it("throws for different fractional digits", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(() => zero.isGreaterThan(Decimal.fromUserInput("1", 1))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThan(Decimal.fromUserInput("1", 2))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThan(Decimal.fromUserInput("1", 3))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThan(Decimal.fromUserInput("1", 4))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThan(Decimal.fromUserInput("1", 6))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThan(Decimal.fromUserInput("1", 7))).toThrowError(/do not match/i);
});
});
describe("isGreaterThanOrEqual", () => {
it("returns correct values", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(zero.isGreaterThanOrEqual(Decimal.fromUserInput("0", 5))).toEqual(true);
expect(zero.isGreaterThanOrEqual(Decimal.fromUserInput("1", 5))).toEqual(false);
expect(zero.isGreaterThanOrEqual(Decimal.fromUserInput("2", 5))).toEqual(false);
expect(zero.isGreaterThanOrEqual(Decimal.fromUserInput("2.8", 5))).toEqual(false);
expect(zero.isGreaterThanOrEqual(Decimal.fromUserInput("0.12345", 5))).toEqual(false);
const one = Decimal.fromUserInput("1", 5);
expect(one.isGreaterThanOrEqual(Decimal.fromUserInput("0", 5))).toEqual(true);
expect(one.isGreaterThanOrEqual(Decimal.fromUserInput("1", 5))).toEqual(true);
expect(one.isGreaterThanOrEqual(Decimal.fromUserInput("2", 5))).toEqual(false);
expect(one.isGreaterThanOrEqual(Decimal.fromUserInput("2.8", 5))).toEqual(false);
expect(one.isGreaterThanOrEqual(Decimal.fromUserInput("0.12345", 5))).toEqual(true);
const oneDotFive = Decimal.fromUserInput("1.5", 5);
expect(oneDotFive.isGreaterThanOrEqual(Decimal.fromUserInput("0", 5))).toEqual(true);
expect(oneDotFive.isGreaterThanOrEqual(Decimal.fromUserInput("1", 5))).toEqual(true);
expect(oneDotFive.isGreaterThanOrEqual(Decimal.fromUserInput("1.5", 5))).toEqual(true);
expect(oneDotFive.isGreaterThanOrEqual(Decimal.fromUserInput("2", 5))).toEqual(false);
expect(oneDotFive.isGreaterThanOrEqual(Decimal.fromUserInput("2.8", 5))).toEqual(false);
expect(oneDotFive.isGreaterThanOrEqual(Decimal.fromUserInput("0.12345", 5))).toEqual(true);
// original value remain unchanged
expect(zero.toString()).toEqual("0");
expect(one.toString()).toEqual("1");
expect(oneDotFive.toString()).toEqual("1.5");
});
it("throws for different fractional digits", () => {
const zero = Decimal.fromUserInput("0", 5);
expect(() => zero.isGreaterThanOrEqual(Decimal.fromUserInput("1", 1))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThanOrEqual(Decimal.fromUserInput("1", 2))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThanOrEqual(Decimal.fromUserInput("1", 3))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThanOrEqual(Decimal.fromUserInput("1", 4))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThanOrEqual(Decimal.fromUserInput("1", 6))).toThrowError(/do not match/i);
expect(() => zero.isGreaterThanOrEqual(Decimal.fromUserInput("1", 7))).toThrowError(/do not match/i);
});
});
});