jamashita

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Jamashita Question

https://gist.github.com/jamashita/547e6f5d880acfdcb0de891d02d309ad#file-iversion-ts-L7

Test

requirements

• Deno

execute test

$ deno test

semantic-versioning.test.ts

import {
  assert,
  assertEquals,
  assertNotEquals,
} from "https://deno.land/std/testing/asserts.ts";
import { Semver } from "./semantic-versioning.ts";

Deno.test("gt より大きい時はtrueを返す", () => {
  const semver1 = Semver.ofString("1.2.3");
  const semver2 = Semver.ofString("1.2.4");
  const semver3 = Semver.ofString("2.2.4");
  assert(semver2.gt(semver1));
  assert(semver3.gt(semver2));
})

Deno.test("gt より大きくない時はfalseを返す", () => {
  const semver1 = Semver.ofString("1.2.3");
  const semver2 = Semver.ofString("1.2.4");
  const semver3 = Semver.ofString("1.2.3");
  assertEquals(semver1.gt(semver2), false);
  assertEquals(semver1.gt(semver3), false);
})

Deno.test("lt より小さい時はtrueを返す", () => {
  const semver1 = Semver.ofString("1.2.3");
  const semver2 = Semver.ofString("1.2.4");
  const semver3 = Semver.ofString("2.2.4");
  assert(semver1.lt(semver2));
  assert(semver2.lt(semver3));
})

Deno.test("lt より小さくない時はfalseを返す", () => {
  const semver1 = Semver.ofString("1.2.3");
  const semver2 = Semver.ofString("1.2.4");
  const semver3 = Semver.ofString("1.2.3");
  assertEquals(semver2.lt(semver1), false);
  assertEquals(semver3.lt(semver1), false);
})

Deno.test("gte 以上の時はtrue そうでない時false", () => {
  const semver1 = Semver.ofString("1.2.3");
  const semver2 = Semver.ofString("1.2.4");
  const semver3 = Semver.ofString("1.2.3");
  assert(semver2.gte(semver1));
  assert(semver3.gte(semver1));
  assertEquals(semver1.gte(semver2), false);
})

Deno.test("lte 以上の時はtrue そうでない時false", () => {
  const semver1 = Semver.ofString("1.2.3");
  const semver2 = Semver.ofString("1.2.4");
  const semver3 = Semver.ofString("1.2.3");
  assert(semver1.lte(semver2));
  assert(semver1.lte(semver3));
  assertEquals(semver2.lte(semver1), false);
})

Deno.test("eq 同値の時trueを返す", () => {
  const semver1 = Semver.ofString("1.2.3");
  const semver2 = Semver.ofString("1.2.3");
  assert(semver1.eq(semver2));
});

Deno.test("eq 同値ではない時falseを返す", () => {
  const semver1 = Semver.ofString("1.2.3");
  const semver2 = Semver.ofString("1.2.4");
  const semver3 = Semver.ofString("1.3.3");
  const semver4 = Semver.ofString("2.2.3");
  assertEquals(semver1.eq(semver2), false);
  assertEquals(semver1.eq(semver3), false);
  assertEquals(semver1.eq(semver4), false);
});

semantic-versioning.ts

export interface IVersion<T extends IVersion<T>> {
  // greater than
  gt(other: T): boolean;
  // greater than or equals
  gte(other: T): boolean;
  // less than
  lt(other: T): boolean;
  // less than or equals
  lte(other: T): boolean;
  // equals
  eq(other: T): boolean;
}

export class Semver implements IVersion<Semver> {
  private mager: number;
  private minor: number;
  private patch: number;
  private constructor(mager: number, minor: number, patch: number) {
    this.mager = mager;
    this.minor = minor;
    this.patch = patch;
  }
  public static ofString(str: string): Semver {
    const versions: string[] = str.split(".");
    if (versions === undefined || versions.length !== 3) {
      throw Error("Invalid parameter");
    }
    return new Semver(
      Number.parseInt(versions[0]),
      Number.parseInt(versions[1]),
      Number.parseInt(versions[2]),
    );
  }

  gt(other: Semver): boolean {
    if (this.mager > other.mager) {
      return true;
    }
    if (this.minor > other.minor) {
      return true;
    }
    return this.patch > other.patch;
  }
  gte(other: Semver): boolean {
    if (this.gt(other)) {
      return true;
    }
    return this.eq(other);
  }
  lt(other: Semver): boolean {
    if (this.mager < other.mager) {
      return true;
    }
    if (this.minor < other.minor) {
      return true;
    }
    return this.patch < other.patch;
  }
  lte(other: Semver): boolean {
    if (this.lt(other)) {
      return true;
    }
    return this.eq(other);
  }
  eq(other: Semver): boolean {
    return this.mager == other.mager &&
      this.minor == other.minor &&
      this.patch == other.patch;
  }
}

https://gist.github.com/jamashita/547e6f5d880acfdcb0de891d02d309ad#file-iversion-ts-L7