cellular-automata/test/src/grid_test.dart
Marty Oehme 2dc1d7fecd Add Grid.fill constructor
Will completely fill the grid with the value passed in.
2018-08-30 10:32:34 +02:00

189 lines
6.2 KiB
Dart

import 'dart:math';
import 'package:rules_of_living/src/Grid.dart';
import 'package:test/test.dart';
@Tags(const ["nobrowser"])
void main() {
group("Instantiation", () {
List<String> l;
setUp(() {
l = [
"Hey",
"you",
"me",
"together",
"Hello",
"World",
"I",
"am",
"ready."
];
});
test("gets created with the correct length for given quadratic gridsize",
() {
Grid sut = Grid(3, 3);
expect(sut.length, 9);
}, tags: const ["happy"]);
test("gets created with the correct length for given rectangular gridsize",
() {
Grid sut = Grid(87, 85);
expect(sut.length, 7395);
}, tags: const ["happy"]);
group(".from", () {
test("copies the content of another grid on .from Constructor call", () {
Grid original = Grid(2, 2);
original[0] = "Hey";
original[1] = "you";
original[2] = "me";
original[3] = "together";
Grid sut = Grid.from(original);
expect(sut, containsAllInOrder(["Hey", "you", "me", "together"]));
}, tags: const ["happy"]);
test("copies the length of another grid on .from Constructor call", () {
Grid original = Grid(2, 2);
original[0] = "Hey";
original[1] = "you";
original[2] = "me";
original[3] = "together";
Grid sut = Grid.from(original);
expect(sut.length, 4);
}, tags: const ["happy"]);
});
group(".fromList", () {
test("sets the length for list passed in on .fromList Constructor call",
() {
Grid sut = Grid.fromList(l, 3);
expect(sut.length, 9);
}, tags: const ["happy"]);
test("sets the contents of list passed in on .fromList Constructor call",
() {
Grid sut = Grid.fromList(l, 3);
expect(sut[3], "together");
}, tags: const ["happy"]);
test(
"sets the correct height for list passed in on .fromList Constructor call",
() {
Grid sut = Grid.fromList(l, 3);
expect(sut.width, 3);
}, tags: const ["happy"]);
});
group(".fill", () {
test("fills list with results of function passed in", () {
Grid<String> sut = Grid.fill(3, 3, "testValue");
expect(
sut,
containsAllInOrder([
"testValue",
"testValue",
"testValue",
"testValue",
"testValue",
"testValue",
"testValue",
"testValue",
"testValue"
]));
}, tags: const ["happy"]);
});
});
group("toIndex", () {
Grid sut;
setUp(() {
sut = Grid(3, 3);
});
test("throws RangeError on negative x argument", () {
expect(() => sut.toIndex(-1, 2), throwsA(isRangeError));
}, tags: const ["bad"]);
test("throws RangeError on negative y argument", () {
expect(() => sut.toIndex(2, -1), throwsA(isRangeError));
}, tags: const ["bad"]);
test("calculates correct index for first element", () {
expect(sut.toIndex(0, 0), equals(0));
}, tags: const ["happy"]);
test("calculates correct index for last element", () {
expect(sut.toIndex(2, 2), equals(8));
}, tags: const ["happy"]);
test("calculates correct index for element on first row", () {
expect(sut.toIndex(2, 0), equals(2));
}, tags: const ["happy"]);
test("calculates correct index for example element", () {
expect(sut.toIndex(1, 1), equals(4));
}, tags: const ["happy"]);
});
group("coordinates getter", () {
Grid sut;
setUp(() {
sut = Grid(3, 3);
sut.setAll(0,
["Hey", "you", "me", "together", "Hello", null, "I", "am", "ready."]);
});
test("returns null if no element exists at the position requested", () {
expect(sut.get(2, 1), null);
}, tags: const ["sad"]);
test("throws RangeError if requesting element outside of grid width", () {
expect(() => sut.get(4, 1), throwsRangeError);
}, tags: const ["bad"]);
test("throws RangeError if requesting element outside of grid height", () {
expect(() => sut.get(1, 4), throwsRangeError);
}, tags: const ["bad"]);
test("returns element at correct index", () {
expect(sut.get(1, 0), "you");
}, tags: const ["happy"]);
test("returns last element correctly", () {
expect(sut.get(2, 2), "ready.");
}, tags: const ["happy"]);
});
group("toCoords", () {
Grid sut;
setUp(() {
sut = Grid(3, 3);
});
test("throws RangeError on negative index argument", () {
expect(() => sut.toCoordinates(-1), throwsA(isRangeError));
}, tags: const ["bad"]);
test("calculates correct index for first element", () {
expect(sut.toCoordinates(0), equals(Point(0, 0)));
}, tags: const ["happy"]);
test("calculates correct index for last element", () {
expect(sut.toCoordinates(8), equals(Point(2, 2)));
}, tags: const ["happy"]);
test("calculates correct index for last element on first row", () {
expect(sut.toCoordinates(2), equals(Point(2, 0)));
}, tags: const ["happy"]);
test("calculates correct index for example element", () {
expect(sut.toCoordinates(6), equals(Point(0, 2)));
}, tags: const ["happy"]);
});
group("coordinates setter", () {
Grid<String> sut;
setUp(() {
sut = Grid(3, 3);
sut.setAll(0,
["Hey", "you", "me", "together", "Hello", null, "I", "am", "ready."]);
});
test("sets element to null if passing null in", () {
sut.set(1, 1, null);
expect(sut.get(1, 1), null);
}, tags: const ["sad"]);
test("throws RangeError if setting element outside of grid width", () {
expect(() => sut.set(4, 1, "testValue"), throwsRangeError);
}, tags: const ["bad"]);
test("throws RangeError if setting element outside of grid height", () {
expect(() => sut.set(1, 4, "testValue"), throwsRangeError);
}, tags: const ["bad"]);
test("sets element at correct index", () {
sut.set(1, 0, "testValue");
expect(sut.get(1, 0), "testValue");
}, tags: const ["happy"]);
test("sets last element correctly", () {
sut.set(2, 2, "testValue");
expect(sut.get(2, 2), "testValue");
}, tags: const ["happy"]);
});
}