/
output_test.dart
228 lines (199 loc) · 6.71 KB
/
output_test.dart
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// Copyright 2019 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.
// Almost all CSS output tests should go in sass-spec rather than here. This
// just covers tests that explicitly validate out that's considered too
// implementation-specific to verify in sass-spec.
import 'package:test/test.dart';
import 'package:sass/sass.dart';
void main() {
group("emits private-use area characters as escapes in expanded mode", () {
testCharacter(String escape) {
test(escape, () {
expect(compileString("a {b: $escape}"),
equalsIgnoringWhitespace("a { b: $escape; }"));
});
}
group("in the basic multilingual plane", () {
testCharacter(r"\e000");
testCharacter(r"\f000");
testCharacter(r"\f8ff");
});
group("in the supplementary planes", () {
testCharacter(r"\f0000");
testCharacter(r"\fabcd");
testCharacter(r"\ffffd");
testCharacter(r"\100000");
testCharacter(r"\10abcd");
testCharacter(r"\10fffd");
// Although these aren't technically in private-use area, they're in
// private-use planes and they have no visual representation to we
// escape them as well.
group("that aren't technically in PUAs", () {
testCharacter(r"\ffffe");
testCharacter(r"\fffff");
testCharacter(r"\10fffe");
testCharacter(r"\10ffff");
});
});
group("adds a space", () {
test("if followed by a hex character", () {
expect(compileString(r"a {b: '\e000 a'}"),
equalsIgnoringWhitespace(r'a { b: "\e000 a"; }'));
});
test("if followed by a space", () {
expect(compileString(r"a {b: '\e000 '}"),
equalsIgnoringWhitespace(r'a { b: "\e000 "; }'));
});
});
});
// Regression test for sass/dart-sass#623. This needs to be tested here
// because sass-spec normalizes CR LF newlines.
group("normalizes newlines in a loud comment", () {
test("in SCSS", () {
expect(compileString("/* foo\r\n * bar */"), equals("/* foo\n * bar */"));
});
test("in Sass", () {
expect(compileString("/*\r\n foo\r\n bar", syntax: Syntax.sass),
equals("/* foo\n * bar */"));
});
});
// Regression test for sass/dart-sass#688. This needs to be tested here
// because it varies between Dart and Node.
group("removes exponential notation", () {
group("for integers", () {
test(">= 1e21", () {
expect(compileString("a {b: 1e21}"),
equalsIgnoringWhitespace("a { b: 1${'0' * 21}; }"));
});
// At time of writing, numbers that are 20 digits or fewer are not printed
// in exponential notation by either Dart or Node, and we rely on that to
// determine when to get rid of the exponent. This test ensures that if that
// ever changes, we know about it.
test("< 1e21", () {
expect(compileString("a {b: 1e20}"),
equalsIgnoringWhitespace("a { b: 1${'0' * 20}; }"));
});
});
group("for floating-point numbers", () {
test("Infinity", () {
expect(compileString("a {b: 1e999}"),
equalsIgnoringWhitespace("a { b: Infinity; }"));
});
test(">= 1e21", () {
expect(compileString("a {b: 1.01e21}"),
equalsIgnoringWhitespace("a { b: 101${'0' * 19}; }"));
});
// At time of writing, numbers that are 20 digits or fewer are not printed
// in exponential notation by either Dart or Node, and we rely on that to
// determine when to get rid of the exponent. This test ensures that if that
// ever changes, we know about it.
test("< 1e21", () {
expect(compileString("a {b: 1.01e20}"),
equalsIgnoringWhitespace("a { b: 101${'0' * 18}; }"));
});
});
});
// Tests for sass/dart-sass#417.
//
// Note there's no need for "in Sass" cases as it's not possible to have
// trailing loud comments in the Sass syntax.
group("preserve trailing loud comments in SCSS", () {
test("after open block", () {
expect(compileString("""
selector { /* please don't move me */
name: value;
}"""), equals("""
selector { /* please don't move me */
name: value;
}"""));
});
test("after open block (multi-line selector)", () {
expect(compileString("""
selector1,
selector2 { /* please don't move me */
name: value;
}"""), equals("""
selector1,
selector2 { /* please don't move me */
name: value;
}"""));
});
test("after close block", () {
expect(compileString("""
selector {
name: value;
} /* please don't move me */"""), equals("""
selector {
name: value;
} /* please don't move me */"""));
});
test("only content in block", () {
expect(compileString("""
selector {
/* please don't move me */
}"""), equals("""
selector {
/* please don't move me */
}"""));
});
test("only content in block (no newlines)", () {
expect(compileString("""
selector { /* please don't move me */ }"""), equals("""
selector { /* please don't move me */ }"""));
});
test("after property in block", () {
expect(compileString("""
selector {
name1: value1; /* please don't move me 1 */
name2: value2; /* please don't move me 2 */
name3: value3; /* please don't move me 3 */
}"""), equals("""
selector {
name1: value1; /* please don't move me 1 */
name2: value2; /* please don't move me 2 */
name3: value3; /* please don't move me 3 */
}"""));
});
test("after rule in block", () {
expect(compileString("""
selector {
@rule1; /* please don't move me 1 */
@rule2; /* please don't move me 2 */
@rule3; /* please don't move me 3 */
}"""), equals("""
selector {
@rule1; /* please don't move me 1 */
@rule2; /* please don't move me 2 */
@rule3; /* please don't move me 3 */
}"""));
});
test("after top-level statement", () {
expect(compileString("@rule; /* please don't move me */"),
equals("@rule; /* please don't move me */"));
});
// The trailing comment detection logic looks for left braces to detect
// whether a comment is on the same line as its parent node. This test
// checks to make sure it isn't confused by syntax that uses braces for
// things other than starting child blocks.
test("selector contains left brace", () {
expect(compileString("""@rule1;
@rule2;
selector[href*="{"]
{ /* please don't move me */ }
@rule3;"""), equals("""@rule1;
@rule2;
selector[href*="{"] { /* please don't move me */ }
@rule3;"""));
});
test("loud comments in mixin", () {
expect(compileString("""
@mixin loudComment {
/* ... */
}
selector {
@include loudComment;
}"""), "selector {\n /* ... */\n}");
});
});
}