72 lines
2.4 KiB
Plaintext
72 lines
2.4 KiB
Plaintext
;; Racket
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(module+ test
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(require rackunit)
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(check-equal? (balance (list (list 'credit 5))) 5)
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(check-equal? (balance (list '(debit 5))) -5)
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(check-equal? (balance '((debit 11) (credit 3))) -8)
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(check-equal? (balance '((debit 3) (credit 5))) 2)
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(check-equal? (balance '((debit 5) (credit 23) (debit 23) (credit 5))) 0))
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# Python
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from invert import invert
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def test_empty():
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assert invert([]) == {}
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def test_simple():
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invert(["three","two","one"]) == {"three": 0, "two":1, "one":2}
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def test_duplicate():
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assert invert(["bob","bob"]) == None
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def test_numeric():
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assert invert(range(0,6)) == { 0:0, 1:1, 2:2, 3:3, 4:4, 5:5 }
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def test_invert():
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L=[-8,"pineapple",3]
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D=invert(L)
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assert [ L[D[j]] for j in L ] == L
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// JavaScript
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Expression = require("../expression.js").Expression;
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let six_plus_nine = new Expression('+', 6, 9);
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let six_times_nine = new Expression('*', 6, 9);
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let six_minus_nine = new Expression('-', 6, 9);
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let sixteen_div_eight = new Expression('/', 16, 8);
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let compound1 = new Expression('+', six_times_nine, six_plus_nine)
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let compound2 = new Expression('*', six_times_nine, compound1)
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let compound3 = new Expression('+', compound2, 3)
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describe("constructor",
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function() {
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let one = new Expression("+",0,1);
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it("not null", () => expect(one).not.toBe(null));
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it("op", () => expect(one.op).toBe("+"));
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it("left", () => expect(one.left).toBe(0));
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it("right", () => expect(one.right).toBe(1));
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});
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describe("simple",
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function() {
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it("+", () => expect(six_plus_nine.eval()).toBe(15));
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it("-", () => expect(six_minus_nine.eval()).toBe(-3));
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it("*", () => expect(six_times_nine.eval()).toBe(54));
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it("/", () => expect(sixteen_div_eight.eval()).toBe(2));
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});
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describe("compound",
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function() {
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it("1", () => expect(compound1.eval()).toBe(69));
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it("2", () => expect(compound2.eval()).toBe(3726));
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it("3", () => expect(compound3.eval()).toBe(3729));
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});
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# Octave
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%!shared P1,P3
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%! P1=[7,5,-3];
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%! P3=[1,2,3;4,5,6;7,8,9];
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%
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%!assert(manypoly(P1,0),7,eps)
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%!assert(manypoly(P1,1),9,eps)
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%!assert(manypoly(P1,5),7+5*5-3*25,eps)
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%!assert(manypoly(P3,0),[1;4;7],eps)
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%!assert(manypoly(P3,1),[6;15;24],eps)
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%!assert(manypoly(P3,2),[1+2*2+3*4;4+5*2+6*4;7+8*2+9*4],eps)
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