test/span_test.dart - source_span - Git at Google

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.

 import 'package:test/test.dart';
 import 'package:source_span/source_span.dart';
 import 'package:source_span/src/colors.dart' as colors;

 main() {
   var span;
   setUp(() {
     span = new SourceSpan(
         new SourceLocation(5, sourceUrl: "foo.dart"),
         new SourceLocation(12, sourceUrl: "foo.dart"),
         "foo bar");
   });

   group('errors', () {
     group('for new SourceSpan()', () {
       test('source URLs must match', () {
         var start = new SourceLocation(0, sourceUrl: "foo.dart");
         var end = new SourceLocation(1, sourceUrl: "bar.dart");
         expect(() => new SourceSpan(start, end, "_"), throwsArgumentError);
       });

       test('end must come after start', () {
         var start = new SourceLocation(1);
         var end = new SourceLocation(0);
         expect(() => new SourceSpan(start, end, "_"), throwsArgumentError);
       });

       test('text must be the right length', () {
         var start = new SourceLocation(0);
         var end = new SourceLocation(1);
         expect(() => new SourceSpan(start, end, "abc"), throwsArgumentError);
       });
     });

     group('for new SourceSpanWithContext()', () {
       test('context must contain text', () {
         var start = new SourceLocation(2);
         var end = new SourceLocation(5);
         expect(() => new SourceSpanWithContext(
               start, end, "abc", "--axc--"), throwsArgumentError);
       });

       test('text starts at start.column in context', () {
         var start = new SourceLocation(3);
         var end = new SourceLocation(5);
         expect(() => new SourceSpanWithContext(
               start, end, "abc", "--abc--"), throwsArgumentError);
       });

       test('text starts at start.column of line in multi-line context', () {
         var start = new SourceLocation(4, line: 55, column: 3);
         var end = new SourceLocation(7, line: 55, column: 6);
         expect(() => new SourceSpanWithContext(
               start, end, "abc", "\n--abc--"), throwsArgumentError);
         expect(() => new SourceSpanWithContext(
               start, end, "abc", "\n----abc--"), throwsArgumentError);
         expect(() => new SourceSpanWithContext(
               start, end, "abc", "\n\n--abc--"), throwsArgumentError);

         // However, these are valid:
         new SourceSpanWithContext(start, end, "abc", "\n---abc--");
         new SourceSpanWithContext(start, end, "abc", "\n\n---abc--");
       });

       test('text can occur multiple times in context', () {
         var start1 = new SourceLocation(4, line: 55, column: 2);
         var end1 = new SourceLocation(7, line: 55, column: 5);
         var start2 = new SourceLocation(4, line: 55, column: 8);
         var end2 = new SourceLocation(7, line: 55, column: 11);
         new SourceSpanWithContext(start1, end1, "abc", "--abc---abc--\n");
         new SourceSpanWithContext(start1, end1, "abc", "--abc--abc--\n");
         new SourceSpanWithContext(start2, end2, "abc", "--abc---abc--\n");
         new SourceSpanWithContext(start2, end2, "abc", "---abc--abc--\n");
         expect(() => new SourceSpanWithContext(
               start1, end1, "abc", "---abc--abc--\n"), throwsArgumentError);
         expect(() => new SourceSpanWithContext(
               start2, end2, "abc", "--abc--abc--\n"), throwsArgumentError);
       });
     });

     group('for union()', () {
       test('source URLs must match', () {
         var other = new SourceSpan(
             new SourceLocation(12, sourceUrl: "bar.dart"),
             new SourceLocation(13, sourceUrl: "bar.dart"),
             "_");

         expect(() => span.union(other), throwsArgumentError);
       });

       test('spans may not be disjoint', () {
         var other = new SourceSpan(
             new SourceLocation(13, sourceUrl: 'foo.dart'),
             new SourceLocation(14, sourceUrl: 'foo.dart'),
             "_");

         expect(() => span.union(other), throwsArgumentError);
       });
     });

     test('for compareTo() source URLs must match', () {
       var other = new SourceSpan(
           new SourceLocation(12, sourceUrl: "bar.dart"),
           new SourceLocation(13, sourceUrl: "bar.dart"),
           "_");

       expect(() => span.compareTo(other), throwsArgumentError);
     });
   });

   test('fields work correctly', () {
     expect(span.start, equals(new SourceLocation(5, sourceUrl: "foo.dart")));
     expect(span.end, equals(new SourceLocation(12, sourceUrl: "foo.dart")));
     expect(span.sourceUrl, equals(Uri.parse("foo.dart")));
     expect(span.length, equals(7));
   });

   group("union()", () {
     test("works with a preceding adjacent span", () {
       var other = new SourceSpan(
           new SourceLocation(0, sourceUrl: "foo.dart"),
           new SourceLocation(5, sourceUrl: "foo.dart"),
           "hey, ");

       var result = span.union(other);
       expect(result.start, equals(other.start));
       expect(result.end, equals(span.end));
       expect(result.text, equals("hey, foo bar"));
     });

     test("works with a preceding overlapping span", () {
       var other = new SourceSpan(
           new SourceLocation(0, sourceUrl: "foo.dart"),
           new SourceLocation(8, sourceUrl: "foo.dart"),
           "hey, foo");

       var result = span.union(other);
       expect(result.start, equals(other.start));
       expect(result.end, equals(span.end));
       expect(result.text, equals("hey, foo bar"));
     });

     test("works with a following adjacent span", () {
       var other = new SourceSpan(
           new SourceLocation(12, sourceUrl: "foo.dart"),
           new SourceLocation(16, sourceUrl: "foo.dart"),
           " baz");

       var result = span.union(other);
       expect(result.start, equals(span.start));
       expect(result.end, equals(other.end));
       expect(result.text, equals("foo bar baz"));
     });

     test("works with a following overlapping span", () {
       var other = new SourceSpan(
           new SourceLocation(9, sourceUrl: "foo.dart"),
           new SourceLocation(16, sourceUrl: "foo.dart"),
           "bar baz");

       var result = span.union(other);
       expect(result.start, equals(span.start));
       expect(result.end, equals(other.end));
       expect(result.text, equals("foo bar baz"));
     });

     test("works with an internal overlapping span", () {
       var other = new SourceSpan(
           new SourceLocation(7, sourceUrl: "foo.dart"),
           new SourceLocation(10, sourceUrl: "foo.dart"),
           "o b");

       expect(span.union(other), equals(span));
     });

     test("works with an external overlapping span", () {
       var other = new SourceSpan(
           new SourceLocation(0, sourceUrl: "foo.dart"),
           new SourceLocation(16, sourceUrl: "foo.dart"),
           "hey, foo bar baz");

       expect(span.union(other), equals(other));
     });
   });

   group("message()", () {
     test("prints the text being described", () {
       expect(span.message("oh no"), equals("""
 line 1, column 6 of foo.dart: oh no
 foo bar
 ^^^^^^^"""));
     });

     test("gracefully handles a missing source URL", () {
       var span = new SourceSpan(
           new SourceLocation(5), new SourceLocation(12), "foo bar");

       expect(span.message("oh no"), equalsIgnoringWhitespace("""
 line 1, column 6: oh no
 foo bar
 ^^^^^^^"""));
     });

     test("gracefully handles empty text", () {
       var span = new SourceSpan(
           new SourceLocation(5), new SourceLocation(5), "");

       expect(span.message("oh no"),
           equals("line 1, column 6: oh no"));
     });

     test("doesn't colorize if color is false", () {
       expect(span.message("oh no", color: false), equals("""
 line 1, column 6 of foo.dart: oh no
 foo bar
 ^^^^^^^"""));
     });

     test("colorizes if color is true", () {
       expect(span.message("oh no", color: true),
           equals("""
 line 1, column 6 of foo.dart: oh no
 ${colors.RED}foo bar${colors.NONE}
 ${colors.RED}^^^^^^^${colors.NONE}"""));
     });

     test("uses the given color if it's passed", () {
       expect(span.message("oh no", color: colors.YELLOW), equals("""
 line 1, column 6 of foo.dart: oh no
 ${colors.YELLOW}foo bar${colors.NONE}
 ${colors.YELLOW}^^^^^^^${colors.NONE}"""));
     });
   });

   group("message() with context", () {
     var spanWithContext;
     setUp(() {
       spanWithContext = new SourceSpanWithContext(
           new SourceLocation(5, sourceUrl: "foo.dart"),
           new SourceLocation(12, sourceUrl: "foo.dart"),
           "foo bar",
           "-----foo bar-----");
     });

     test("underlines under the right column", () {
       expect(spanWithContext.message("oh no", color: colors.YELLOW), equals("""
 line 1, column 6 of foo.dart: oh no
 -----${colors.YELLOW}foo bar${colors.NONE}-----
      ${colors.YELLOW}^^^^^^^${colors.NONE}"""));
     });

     test("underlines correctly when text appears twice", () {
       var span = new SourceSpanWithContext(
           new SourceLocation(9, column: 9, sourceUrl: "foo.dart"),
           new SourceLocation(12, column: 12, sourceUrl: "foo.dart"),
           "foo",
           "-----foo foo-----");
       expect(span.message("oh no", color: colors.YELLOW), equals("""
 line 1, column 10 of foo.dart: oh no
 -----foo ${colors.YELLOW}foo${colors.NONE}-----
          ${colors.YELLOW}^^^${colors.NONE}"""));
   });

     test("supports lines of preceeding context", () {
       var span = new SourceSpanWithContext(
           new SourceLocation(5, line: 3, column: 5, sourceUrl: "foo.dart"),
           new SourceLocation(12, line: 3, column: 12, sourceUrl: "foo.dart"),
           "foo bar",
           "previous\nlines\n-----foo bar-----\nfollowing line\n");

       expect(span.message("oh no", color: colors.YELLOW), equals("""
 line 4, column 6 of foo.dart: oh no
 previous
 lines
 -----${colors.YELLOW}foo bar${colors.NONE}-----
      ${colors.YELLOW}^^^^^^^${colors.NONE}"""));
     });
   });

   group("compareTo()", () {
     test("sorts by start location first", () {
       var other = new SourceSpan(
           new SourceLocation(6, sourceUrl: "foo.dart"),
           new SourceLocation(14, sourceUrl: "foo.dart"),
           "oo bar b");

       expect(span.compareTo(other), lessThan(0));
       expect(other.compareTo(span), greaterThan(0));
     });

     test("sorts by length second", () {
       var other = new SourceSpan(
           new SourceLocation(5, sourceUrl: "foo.dart"),
           new SourceLocation(14, sourceUrl: "foo.dart"),
           "foo bar b");

       expect(span.compareTo(other), lessThan(0));
       expect(other.compareTo(span), greaterThan(0));
     });

     test("considers equal spans equal", () {
       expect(span.compareTo(span), equals(0));
     });
   });

   group("equality", () {
     test("two spans with the same locations are equal", () {
       var other = new SourceSpan(
           new SourceLocation(5, sourceUrl: "foo.dart"),
           new SourceLocation(12, sourceUrl: "foo.dart"),
           "foo bar");

       expect(span, equals(other));
     });

     test("a different start isn't equal", () {
       var other = new SourceSpan(
           new SourceLocation(0, sourceUrl: "foo.dart"),
           new SourceLocation(12, sourceUrl: "foo.dart"),
           "hey, foo bar");

       expect(span, isNot(equals(other)));
     });

     test("a different end isn't equal", () {
       var other = new SourceSpan(
           new SourceLocation(5, sourceUrl: "foo.dart"),
           new SourceLocation(16, sourceUrl: "foo.dart"),
           "foo bar baz");

       expect(span, isNot(equals(other)));
     });

     test("a different source URL isn't equal", () {
       var other = new SourceSpan(
           new SourceLocation(5, sourceUrl: "bar.dart"),
           new SourceLocation(12, sourceUrl: "bar.dart"),
           "foo bar");

       expect(span, isNot(equals(other)));
     });
   });
 }
	// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
	// for details. All rights reserved. Use of this source code is governed by a
	// BSD-style license that can be found in the LICENSE file.

	import 'package:test/test.dart';
	import 'package:source_span/source_span.dart';
	import 'package:source_span/src/colors.dart' as colors;

	main() {
	var span;
	setUp(() {
	span = new SourceSpan(
	new SourceLocation(5, sourceUrl: "foo.dart"),
	new SourceLocation(12, sourceUrl: "foo.dart"),
	"foo bar");
	});

	group('errors', () {
	group('for new SourceSpan()', () {
	test('source URLs must match', () {
	var start = new SourceLocation(0, sourceUrl: "foo.dart");
	var end = new SourceLocation(1, sourceUrl: "bar.dart");
	expect(() => new SourceSpan(start, end, "_"), throwsArgumentError);
	});

	test('end must come after start', () {
	var start = new SourceLocation(1);
	var end = new SourceLocation(0);
	expect(() => new SourceSpan(start, end, "_"), throwsArgumentError);
	});

	test('text must be the right length', () {
	var start = new SourceLocation(0);
	var end = new SourceLocation(1);
	expect(() => new SourceSpan(start, end, "abc"), throwsArgumentError);
	});
	});

	group('for new SourceSpanWithContext()', () {
	test('context must contain text', () {
	var start = new SourceLocation(2);
	var end = new SourceLocation(5);
	expect(() => new SourceSpanWithContext(
	start, end, "abc", "--axc--"), throwsArgumentError);
	});

	test('text starts at start.column in context', () {
	var start = new SourceLocation(3);
	var end = new SourceLocation(5);
	expect(() => new SourceSpanWithContext(
	start, end, "abc", "--abc--"), throwsArgumentError);
	});

	test('text starts at start.column of line in multi-line context', () {
	var start = new SourceLocation(4, line: 55, column: 3);
	var end = new SourceLocation(7, line: 55, column: 6);
	expect(() => new SourceSpanWithContext(
	start, end, "abc", "\n--abc--"), throwsArgumentError);
	expect(() => new SourceSpanWithContext(
	start, end, "abc", "\n----abc--"), throwsArgumentError);
	expect(() => new SourceSpanWithContext(
	start, end, "abc", "\n\n--abc--"), throwsArgumentError);

	// However, these are valid:
	new SourceSpanWithContext(start, end, "abc", "\n---abc--");
	new SourceSpanWithContext(start, end, "abc", "\n\n---abc--");
	});

	test('text can occur multiple times in context', () {
	var start1 = new SourceLocation(4, line: 55, column: 2);
	var end1 = new SourceLocation(7, line: 55, column: 5);
	var start2 = new SourceLocation(4, line: 55, column: 8);
	var end2 = new SourceLocation(7, line: 55, column: 11);
	new SourceSpanWithContext(start1, end1, "abc", "--abc---abc--\n");
	new SourceSpanWithContext(start1, end1, "abc", "--abc--abc--\n");
	new SourceSpanWithContext(start2, end2, "abc", "--abc---abc--\n");
	new SourceSpanWithContext(start2, end2, "abc", "---abc--abc--\n");
	expect(() => new SourceSpanWithContext(
	start1, end1, "abc", "---abc--abc--\n"), throwsArgumentError);
	expect(() => new SourceSpanWithContext(
	start2, end2, "abc", "--abc--abc--\n"), throwsArgumentError);
	});
	});

	group('for union()', () {
	test('source URLs must match', () {
	var other = new SourceSpan(
	new SourceLocation(12, sourceUrl: "bar.dart"),
	new SourceLocation(13, sourceUrl: "bar.dart"),
	"_");

	expect(() => span.union(other), throwsArgumentError);
	});

	test('spans may not be disjoint', () {
	var other = new SourceSpan(
	new SourceLocation(13, sourceUrl: 'foo.dart'),
	new SourceLocation(14, sourceUrl: 'foo.dart'),
	"_");

	expect(() => span.union(other), throwsArgumentError);
	});
	});

	test('for compareTo() source URLs must match', () {
	var other = new SourceSpan(
	new SourceLocation(12, sourceUrl: "bar.dart"),
	new SourceLocation(13, sourceUrl: "bar.dart"),
	"_");

	expect(() => span.compareTo(other), throwsArgumentError);
	});
	});

	test('fields work correctly', () {
	expect(span.start, equals(new SourceLocation(5, sourceUrl: "foo.dart")));
	expect(span.end, equals(new SourceLocation(12, sourceUrl: "foo.dart")));
	expect(span.sourceUrl, equals(Uri.parse("foo.dart")));
	expect(span.length, equals(7));
	});

	group("union()", () {
	test("works with a preceding adjacent span", () {
	var other = new SourceSpan(
	new SourceLocation(0, sourceUrl: "foo.dart"),
	new SourceLocation(5, sourceUrl: "foo.dart"),
	"hey, ");

	var result = span.union(other);
	expect(result.start, equals(other.start));
	expect(result.end, equals(span.end));
	expect(result.text, equals("hey, foo bar"));
	});

	test("works with a preceding overlapping span", () {
	var other = new SourceSpan(
	new SourceLocation(0, sourceUrl: "foo.dart"),
	new SourceLocation(8, sourceUrl: "foo.dart"),
	"hey, foo");

	var result = span.union(other);
	expect(result.start, equals(other.start));
	expect(result.end, equals(span.end));
	expect(result.text, equals("hey, foo bar"));
	});

	test("works with a following adjacent span", () {
	var other = new SourceSpan(
	new SourceLocation(12, sourceUrl: "foo.dart"),
	new SourceLocation(16, sourceUrl: "foo.dart"),
	" baz");

	var result = span.union(other);
	expect(result.start, equals(span.start));
	expect(result.end, equals(other.end));
	expect(result.text, equals("foo bar baz"));
	});

	test("works with a following overlapping span", () {
	var other = new SourceSpan(
	new SourceLocation(9, sourceUrl: "foo.dart"),
	new SourceLocation(16, sourceUrl: "foo.dart"),
	"bar baz");

	var result = span.union(other);
	expect(result.start, equals(span.start));
	expect(result.end, equals(other.end));
	expect(result.text, equals("foo bar baz"));
	});

	test("works with an internal overlapping span", () {
	var other = new SourceSpan(
	new SourceLocation(7, sourceUrl: "foo.dart"),
	new SourceLocation(10, sourceUrl: "foo.dart"),
	"o b");

	expect(span.union(other), equals(span));
	});

	test("works with an external overlapping span", () {
	var other = new SourceSpan(
	new SourceLocation(0, sourceUrl: "foo.dart"),
	new SourceLocation(16, sourceUrl: "foo.dart"),
	"hey, foo bar baz");

	expect(span.union(other), equals(other));
	});
	});

	group("message()", () {
	test("prints the text being described", () {
	expect(span.message("oh no"), equals("""
	line 1, column 6 of foo.dart: oh no
	foo bar
	^^^^^^^"""));
	});

	test("gracefully handles a missing source URL", () {
	var span = new SourceSpan(
	new SourceLocation(5), new SourceLocation(12), "foo bar");

	expect(span.message("oh no"), equalsIgnoringWhitespace("""
	line 1, column 6: oh no
	foo bar
	^^^^^^^"""));
	});

	test("gracefully handles empty text", () {
	var span = new SourceSpan(
	new SourceLocation(5), new SourceLocation(5), "");

	expect(span.message("oh no"),
	equals("line 1, column 6: oh no"));
	});

	test("doesn't colorize if color is false", () {
	expect(span.message("oh no", color: false), equals("""
	line 1, column 6 of foo.dart: oh no
	foo bar
	^^^^^^^"""));
	});

	test("colorizes if color is true", () {
	expect(span.message("oh no", color: true),
	equals("""
	line 1, column 6 of foo.dart: oh no
	${colors.RED}foo bar${colors.NONE}
	${colors.RED}^^^^^^^${colors.NONE}"""));
	});

	test("uses the given color if it's passed", () {
	expect(span.message("oh no", color: colors.YELLOW), equals("""
	line 1, column 6 of foo.dart: oh no
	${colors.YELLOW}foo bar${colors.NONE}
	${colors.YELLOW}^^^^^^^${colors.NONE}"""));
	});
	});

	group("message() with context", () {
	var spanWithContext;
	setUp(() {
	spanWithContext = new SourceSpanWithContext(
	new SourceLocation(5, sourceUrl: "foo.dart"),
	new SourceLocation(12, sourceUrl: "foo.dart"),
	"foo bar",
	"-----foo bar-----");
	});

	test("underlines under the right column", () {
	expect(spanWithContext.message("oh no", color: colors.YELLOW), equals("""
	line 1, column 6 of foo.dart: oh no
	-----${colors.YELLOW}foo bar${colors.NONE}-----
	${colors.YELLOW}^^^^^^^${colors.NONE}"""));
	});

	test("underlines correctly when text appears twice", () {
	var span = new SourceSpanWithContext(
	new SourceLocation(9, column: 9, sourceUrl: "foo.dart"),
	new SourceLocation(12, column: 12, sourceUrl: "foo.dart"),
	"foo",
	"-----foo foo-----");
	expect(span.message("oh no", color: colors.YELLOW), equals("""
	line 1, column 10 of foo.dart: oh no
	-----foo ${colors.YELLOW}foo${colors.NONE}-----
	${colors.YELLOW}^^^${colors.NONE}"""));
	});

	test("supports lines of preceeding context", () {
	var span = new SourceSpanWithContext(
	new SourceLocation(5, line: 3, column: 5, sourceUrl: "foo.dart"),
	new SourceLocation(12, line: 3, column: 12, sourceUrl: "foo.dart"),
	"foo bar",
	"previous\nlines\n-----foo bar-----\nfollowing line\n");

	expect(span.message("oh no", color: colors.YELLOW), equals("""
	line 4, column 6 of foo.dart: oh no
	previous
	lines
	-----${colors.YELLOW}foo bar${colors.NONE}-----
	${colors.YELLOW}^^^^^^^${colors.NONE}"""));
	});
	});

	group("compareTo()", () {
	test("sorts by start location first", () {
	var other = new SourceSpan(
	new SourceLocation(6, sourceUrl: "foo.dart"),
	new SourceLocation(14, sourceUrl: "foo.dart"),
	"oo bar b");

	expect(span.compareTo(other), lessThan(0));
	expect(other.compareTo(span), greaterThan(0));
	});

	test("sorts by length second", () {
	var other = new SourceSpan(
	new SourceLocation(5, sourceUrl: "foo.dart"),
	new SourceLocation(14, sourceUrl: "foo.dart"),
	"foo bar b");

	expect(span.compareTo(other), lessThan(0));
	expect(other.compareTo(span), greaterThan(0));
	});

	test("considers equal spans equal", () {
	expect(span.compareTo(span), equals(0));
	});
	});

	group("equality", () {
	test("two spans with the same locations are equal", () {
	var other = new SourceSpan(
	new SourceLocation(5, sourceUrl: "foo.dart"),
	new SourceLocation(12, sourceUrl: "foo.dart"),
	"foo bar");

	expect(span, equals(other));
	});

	test("a different start isn't equal", () {
	var other = new SourceSpan(
	new SourceLocation(0, sourceUrl: "foo.dart"),
	new SourceLocation(12, sourceUrl: "foo.dart"),
	"hey, foo bar");

	expect(span, isNot(equals(other)));
	});

	test("a different end isn't equal", () {
	var other = new SourceSpan(
	new SourceLocation(5, sourceUrl: "foo.dart"),
	new SourceLocation(16, sourceUrl: "foo.dart"),
	"foo bar baz");

	expect(span, isNot(equals(other)));
	});

	test("a different source URL isn't equal", () {
	var other = new SourceSpan(
	new SourceLocation(5, sourceUrl: "bar.dart"),
	new SourceLocation(12, sourceUrl: "bar.dart"),
	"foo bar");

	expect(span, isNot(equals(other)));
	});
	});
	}