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Check if number is in specific range

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Ming Ming 2021-06-21 17:04:09 +08:00
parent bf0e60c474
commit 3e7b9ffe36
2 changed files with 72 additions and 0 deletions
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11
lib/num_extension.dart Normal file
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extension NumExtension on num {
bool inRange(
num beg,
num end, {
bool isBegInclusive = true,
bool isEndInclusive = true,
}) {
return (this > beg || (isBegInclusive && this == beg)) &&
(this < end || (isEndInclusive && this == end));
}
}

61
test/num_extension_test.dart Normal file
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import 'package:nc_photos/num_extension.dart';
import 'package:test/test.dart';
void main() {
group("NumExtension", () {
group("inRange", () {
test("[x, y)", () {
expect(10.inRange(0, 20, isBegInclusive: true, isEndInclusive: false),
true);
expect(0.inRange(0, 20, isBegInclusive: true, isEndInclusive: false),
true);
expect((-1).inRange(0, 20, isBegInclusive: true, isEndInclusive: false),
false);
expect(20.inRange(0, 20, isBegInclusive: true, isEndInclusive: false),
false);
expect(21.inRange(0, 20, isBegInclusive: true, isEndInclusive: false),
false);
});
test("[x, y]", () {
expect(10.inRange(0, 20, isBegInclusive: true, isEndInclusive: true),
true);
expect(
0.inRange(0, 20, isBegInclusive: true, isEndInclusive: true), true);
expect((-1).inRange(0, 20, isBegInclusive: true, isEndInclusive: true),
false);
expect(20.inRange(0, 20, isBegInclusive: true, isEndInclusive: true),
true);
expect(21.inRange(0, 20, isBegInclusive: true, isEndInclusive: true),
false);
});
test("(x, y)", () {
expect(10.inRange(0, 20, isBegInclusive: false, isEndInclusive: false),
true);
expect(0.inRange(0, 20, isBegInclusive: false, isEndInclusive: false),
false);
expect(
(-1).inRange(0, 20, isBegInclusive: false, isEndInclusive: false),
false);
expect(20.inRange(0, 20, isBegInclusive: false, isEndInclusive: false),
false);
expect(21.inRange(0, 20, isBegInclusive: false, isEndInclusive: false),
false);
});
test("(x, y]", () {
expect(10.inRange(0, 20, isBegInclusive: false, isEndInclusive: true),
true);
expect(0.inRange(0, 20, isBegInclusive: false, isEndInclusive: true),
false);
expect((-1).inRange(0, 20, isBegInclusive: false, isEndInclusive: true),
false);
expect(20.inRange(0, 20, isBegInclusive: false, isEndInclusive: true),
true);
expect(21.inRange(0, 20, isBegInclusive: false, isEndInclusive: true),
false);
});
});
});
}