1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
package org.shedlang.compiler.parser;
import org.junit.jupiter.api.Test;
import org.shedlang.compiler.parser.errors.IntLiteralCannotHaveLeadingZeroesError;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.shedlang.compiler.ast.untyped.UntypedNodeMatchers.isUntypedIntLiteralNode;
import static org.shedlang.compiler.parser.ParserTesting.parseString;
import static org.zwobble.precisely.AssertThat.assertThat;
public class ParserIntLiteralTests {
@Test
public void canParseZero() {
var source = "0";
var node = parseString(source, Parser::parseTopLevelExpression);
assertThat(node, isUntypedIntLiteralNode(0));
}
@Test
public void canParseNegativeZero() {
var source = "-0";
var node = parseString(source, Parser::parseTopLevelExpression);
assertThat(node, isUntypedIntLiteralNode(0));
}
@Test
public void canParseSingleDigitPositiveInt() {
var source = "7";
var node = parseString(source, Parser::parseTopLevelExpression);
assertThat(node, isUntypedIntLiteralNode(7));
}
@Test
public void canParseManyDigitPositiveInt() {
var source = "723";
var node = parseString(source, Parser::parseTopLevelExpression);
assertThat(node, isUntypedIntLiteralNode(723));
}
@Test
public void canParseSingleDigitNegativeInt() {
var source = "-7";
var node = parseString(source, Parser::parseTopLevelExpression);
assertThat(node, isUntypedIntLiteralNode(-7));
}
@Test
public void canParseManyDigitNegativeInt() {
var source = "-723";
var node = parseString(source, Parser::parseTopLevelExpression);
assertThat(node, isUntypedIntLiteralNode(-723));
}
@Test
public void leadingZeroesOnPositiveNumberAreForbidden() {
var source = "01";
assertThrows(
IntLiteralCannotHaveLeadingZeroesError.class,
() -> parseString(source, Parser::parseTopLevelExpression)
);
}
@Test
public void leadingZeroesOnNegativeNumberAreForbidden() {
var source = "-01";
assertThrows(
IntLiteralCannotHaveLeadingZeroesError.class,
() -> parseString(source, Parser::parseTopLevelExpression)
);
}
}
|
