({

name: 'seq',

length: [10, 100],

test: seq => {

{

const f1 = x => x + 7;

const f2 = x => x * 2;

const f = seq(f1)(f2);

const x = 0;

const y = f(x);

const expected = 7;

if (y !== expected) {

const msg = `seq(${f1})(${f2})(${x})`;

throw new Error(`${msg} === ${y} expected: ${expected}`);

}

}

{

const f1 = x => x + 7;

const f2 = x => x * 2;

const f = seq(f1)(f2);

const x = 5;

const y = f(x);

const expected = 17;

if (y !== expected) {

const msg = `seq(${f1})(${f2})(${x})`;

throw new Error(`${msg} === ${y} expected: ${expected}`);

}

}

{

const f1 = x => x * 2;

const f2 = x => x + 7;

const f = seq(f1)(f2);

const x = 5;

const y = f(x);

const expected = 24;

if (y !== expected) {

const msg = `seq(${f1})(${f2})(${x})`;

throw new Error(`${msg} === ${y} expected: ${expected}`);

}

}

{

const f1 = x => x + 1;

const f2 = x => x * 2;

const f3 = x => x / 3;

const f4 = x => x - 4;

const f = seq(f1)(f2)(f3)(f4);

const x = 7;

const y = f(x);

const expected = 3;

if (y !== expected) {

const msg = `seq(${f1})(${f2})(${f3})(${f4})(${x})`;

throw new Error(`${msg} === ${y} expected: ${expected}`);

}

}

}

})