const {step} = require("./number-steps");
describe("number-steps", () => {
describe("Bugs", () => {
it("should handle the -1 case correctly", () => {
expect(step({size : 1, snap: true}).down(-1)).toBe(-2)
});
it("should handle the 1 case correctly", () => {
expect(step({size : 1, snap: true}).up(1)).toBe(2)
});
})
describe("Happy Case", () => {
it("should resolve non-snapped steps correctly", () => {
expect(step({size : 50}).up(23)).toBe(73)
expect(step({size : 50}).up(-23)).toBe(27)
expect(step({size : 50}).down(23)).toBe(-27)
expect(step({size : 50}).down(-23)).toBe(-73)
})
it.each`value | expected
${-23} | ${0}
${-100}| ${-50}
${-115}| ${-100}
${-145}| ${-100}
${-150}| ${-100}
${-155}| ${-150}
${-200}| ${-150}
${-250}| ${-200}
${0}| ${50}
${23}| ${50}
${115}| ${150}
${145}| ${150}
${150}| ${200}
`("should resolve the snapped up steps for $value and step size 50 correctly", ({value, expected}) => {
expect(step({size : 50, snap: true}).up(value)).toBe(expected)
})
it.each`value | expected
${-23} | ${0}
${-115}| ${-92}
${-145}| ${-138}
${-155}| ${-138}
${0}| ${23}
${23}| ${46}
${116}| ${138}
${145}| ${161}
`("should resolve the snapped up steps for $value and step size 23 correctly", ({value, expected}) => {
expect(step({size : 23, snap: true}).up(value)).toBe(expected)
})
it.each`value | expected
${-23} | ${-50}
${-115}| ${-150}
${-145}| ${-150}
${-150}| ${-200}
${-155}| ${-200}
${0}| ${-50}
${23}| ${0}
${115}| ${100}
${145}| ${100}
${150}| ${100}
${155}| ${150}
`("should resolve the snapped down steps for $value and step size 50 correctly", ({value, expected}) => {
expect(step({size : 50, snap: true}).down(value)).toBe(expected)
})
})
})