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number_test.dart
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number_test.dart
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// Copyright 2018 Google Inc. Use of this source code is governed by an
// MIT-style license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT.
// TODO(nweiz): Remove this ignore and add explicit type arguments once we
// support only Dart SDKs >= 2.15.
// ignore_for_file: inference_failure_on_function_invocation
@TestOn('node')
@Tags(['node'])
import 'dart:js_util';
import 'package:js/js.dart';
import 'package:test/test.dart';
import '../api.dart';
import '../utils.dart';
import 'utils.dart';
void main() {
group("from a parameter", () {
late NodeSassNumber number;
setUp(() {
number = parseValue<NodeSassNumber>("1px");
});
test("is instanceof Number", () {
expect(number, isJSInstanceOf(sass.types.Number));
});
test("provides access to its value and unit", () {
expect(number.getValue(), equals(1));
expect(number.getUnit(), equals("px"));
});
test("a unitless number returns the empty string", () {
expect(parseValue<NodeSassNumber>("1").getUnit(), isEmpty);
});
test("a complex unit number returns its full units", () {
expect(parseValue<NodeSassNumber>("1px*1ms/1rad/1dpi").getUnit(),
equals("px*ms/rad*dpi"));
});
test("a denominator-only unit starts with /", () {
expect(parseValue<NodeSassNumber>("1/1px").getUnit(), equals("/px"));
});
test("the value can be set without affecting the underlying number", () {
expect(
renderSync(RenderOptions(
data: r"a {$number: 1px; b: foo($number); c: $number}",
functions: jsify({
r"foo($number)":
allowInterop(expectAsync1((NodeSassNumber number) {
number.setValue(42);
expect(number.getValue(), equals(42));
return number;
}))
}))),
equalsIgnoringWhitespace("a { b: 42px; c: 1px; }"));
});
test("the unit can be set without affecting the underlying number", () {
expect(
renderSync(RenderOptions(
data: r"a {$number: 1px; b: foo($number); c: $number}",
functions: jsify({
r"foo($number)":
allowInterop(expectAsync1((NodeSassNumber number) {
number.setUnit("em");
expect(number.getUnit(), equals("em"));
return number;
}))
}))),
equalsIgnoringWhitespace("a { b: 1em; c: 1px; }"));
});
test("the unit can be set to a complex unit", () {
expect(
renderSync(RenderOptions(
data: r"a {b: foo(1)*1ms*1dpi/1rad}",
functions: jsify({
r"foo($number)":
allowInterop(expectAsync1((NodeSassNumber number) {
number.setUnit("px*rad/ms*dpi");
expect(number.getUnit(), equals("px*rad/ms*dpi"));
return number;
}))
}))),
equalsIgnoringWhitespace("a { b: 1px; }"));
});
test("the unit can be set to denominator-only", () {
expect(
renderSync(RenderOptions(
data: r"a {b: foo(1)*1em}",
functions: jsify({
r"foo($number)":
allowInterop(expectAsync1((NodeSassNumber number) {
number.setUnit("/em");
expect(number.getUnit(), equals("/em"));
return number;
}))
}))),
equalsIgnoringWhitespace("a { b: 1; }"));
});
test("the unit can be set to a complex unit", () {
expect(
renderSync(RenderOptions(
data: r"a {b: foo(1)*1ms*1dpi/1rad}",
functions: jsify({
r"foo($number)":
allowInterop(expectAsync1((NodeSassNumber number) {
number.setUnit("px*rad/ms*dpi");
expect(number.getUnit(), equals("px*rad/ms*dpi"));
return number;
}))
}))),
equalsIgnoringWhitespace("a { b: 1px; }"));
});
test("the unit can be unset", () {
expect(
renderSync(RenderOptions(
data: r"a {b: unitless(foo(1px))}",
functions: jsify({
r"foo($number)":
allowInterop(expectAsync1((NodeSassNumber number) {
number.setUnit("");
expect(number.getUnit(), isEmpty);
return number;
}))
}))),
equalsIgnoringWhitespace("a { b: true; }"));
});
test("rejects invalid unit formats", () {
expect(() => number.setUnit("*"), throwsA(anything));
expect(() => number.setUnit("/"), throwsA(anything));
expect(() => number.setUnit("px*"), throwsA(anything));
expect(() => number.setUnit("px/"), throwsA(anything));
expect(() => number.setUnit("*px"), throwsA(anything));
expect(() => number.setUnit("px/deg/ms"), throwsA(anything));
});
test("has a useful .constructor.name", () {
expect(number.constructor.name, equals("sass.types.Number"));
});
});
group("from a constructor", () {
test("is a number with the given value and units", () {
var number = callConstructor(sass.types.Number, [123, "px"]);
expect(number, isJSInstanceOf(sass.types.Number));
expect(number.getValue(), equals(123));
expect(number.getUnit(), equals("px"));
});
test("defaults to no unit", () {
var number = callConstructor(sass.types.Number, [123]);
expect(number.getUnit(), isEmpty);
});
test("allows complex units", () {
expect(
renderSync(RenderOptions(
data: r"a {b: foo()*1ms*1dpi/1rad}",
functions: jsify({
"foo()": allowInterop(expectAsync0(() {
var number =
callConstructor(sass.types.Number, [1, "px*rad/ms*dpi"]);
expect(number.getUnit(), equals("px*rad/ms*dpi"));
return number;
}))
}))),
equalsIgnoringWhitespace("a { b: 1px; }"));
});
test("has a useful .constructor.name", () {
expect(callConstructor(sass.types.Number, [123]).constructor.name,
equals("sass.types.Number"));
});
});
}