84 lines
1.9 KiB
TypeScript
84 lines
1.9 KiB
TypeScript
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import { calculateRatio } from "../maths"
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describe("utils/maths", () => {
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describe("calculateRatio", () => {
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it("should calculate the ratio of a value to a total", () => {
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// Arrange - Given
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const value = 3
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const total = 10
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// Act - When
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const result = calculateRatio(value, total)
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// Assert - Then
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const expected = 0.3
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expect(result).toEqual(expected)
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})
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it("should return 0 if the total is 0", () => {
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// Arrange - Given
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const value = 3
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const total = 0
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// Act - When
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const result = calculateRatio(value, total)
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// Assert - Then
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const expected = 0
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expect(result).toEqual(expected)
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})
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it("should return 0 if the total is negative", () => {
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// Arrange - Given
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const value = 3
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const total = -1
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// Act - When
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const result = calculateRatio(value, total)
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// Assert - Then
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const expected = 0
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expect(result).toEqual(expected)
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})
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it("should return 0 if the value is 0", () => {
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// Arrange - Given
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const value = 0
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const total = 10
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// Act - When
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const result = calculateRatio(value, total)
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// Assert - Then
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const expected = 0
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expect(result).toEqual(expected)
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})
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it("should return 1 if the value is equal to the total", () => {
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// Arrange - Given
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const value = 10
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const total = 10
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// Act - When
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const result = calculateRatio(value, total)
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// Assert - Then
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const expected = 1
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expect(result).toEqual(expected)
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})
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it("should return 1 if the value is greater than the total", () => {
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// Arrange - Given
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const value = 11
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const total = 10
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// Act - When
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const result = calculateRatio(value, total)
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// Assert - Then
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const expected = 1
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expect(result).toEqual(expected)
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})
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})
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})
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