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Code Issues Releases Wiki Activity

Write more tests for the Lexer.

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This commit is contained in:
Danila Fedorin 2017-07-30 14:12:17 -07:00
parent 0f21526ec8
commit 1c31efa577
1 changed files with 89 additions and 0 deletions
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89
src/test/java/org/nwapw/abacus/tests/LexerTests.java
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@ -15,6 +15,7 @@ public class LexerTests {
lexer.register("abc", 0); lexer.register("abc", 0);
lexer.register("def", 1); lexer.register("def", 1);
List<Match<Integer>> matchedIntegers = lexer.lexAll("abcdefabc", 0, Integer::compare); List<Match<Integer>> matchedIntegers = lexer.lexAll("abcdefabc", 0, Integer::compare);
Assert.assertNotNull(matchedIntegers);
Assert.assertEquals(matchedIntegers.get(0).getType(), Integer.valueOf(0)); Assert.assertEquals(matchedIntegers.get(0).getType(), Integer.valueOf(0));
Assert.assertEquals(matchedIntegers.get(1).getType(), Integer.valueOf(1)); Assert.assertEquals(matchedIntegers.get(1).getType(), Integer.valueOf(1));
Assert.assertEquals(matchedIntegers.get(2).getType(), Integer.valueOf(0)); Assert.assertEquals(matchedIntegers.get(2).getType(), Integer.valueOf(0));
@ -40,5 +41,93 @@ public class LexerTests {
lexer.register("a?", 0); lexer.register("a?", 0);
Assert.assertNull(lexer.lexAll("", 0, Integer::compare)); Assert.assertNull(lexer.lexAll("", 0, Integer::compare));
} }
@Test
public void testOneOrMore(){
Lexer<Integer> lexer = new Lexer<>();
lexer.register("a+", 0);
List<Match<Integer>> tokens = lexer.lexAll("aaaa", 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(tokens.size(), 1);
}
@Test
public void testZeroOrMore(){
Lexer<Integer> lexer = new Lexer<>();
lexer.register("a*", 0);
List<Match<Integer>> tokens = lexer.lexAll("aaaa", 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(tokens.size(), 1);
}
@Test
public void testZeroOrOne(){
Lexer<Integer> lexer = new Lexer<>();
lexer.register("a?", 0);
List<Match<Integer>> tokens = lexer.lexAll("aaaa", 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(tokens.size(), 4);
}
@Test
public void testGreedyMatching(){
Lexer<Integer> lexer = new Lexer<>();
lexer.register("a*a", 0);
List<Match<Integer>> tokens = lexer.lexAll("aaaa", 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(tokens.size(), 1);
}
@Test
public void testAnyCharacter(){
String testString = "abcdef";
Lexer<Integer> lexer = new Lexer<>();
lexer.register(".", 0);
List<Match<Integer>> tokens = lexer.lexAll(testString, 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(tokens.size(), testString.length());
for(int i = 0; i < tokens.size(); i++){
Assert.assertEquals(testString.substring(i, i + 1), tokens.get(i).getContent());
}
}
@Test
public void testBasicGroup(){
Lexer<Integer> lexer = new Lexer<>();
lexer.register("(abc)", 0);
List<Match<Integer>> tokens = lexer.lexAll("abc", 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(tokens.size(), 1);
Assert.assertEquals(tokens.get(0).getContent(), "abc");
}
@Test
public void testBasicRangeSuccess(){
String testString = "abcdef";
Lexer<Integer> lexer = new Lexer<>();
lexer.register("[a-f]", 0);
List<Match<Integer>> tokens = lexer.lexAll(testString, 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(testString.length(), tokens.size());
for(int i = 0; i < tokens.size(); i++){
Assert.assertEquals(testString.substring(i, i + 1), tokens.get(i).getContent());
}
}
@Test
public void testBasicRangeFailure(){
Lexer<Integer> lexer = new Lexer<>();
lexer.register("[a-f]", 0);
Assert.assertNull(lexer.lexAll("g", 0, Integer::compare));
}
@Test
public void testGroupAndOperator(){
Lexer<Integer> lexer = new Lexer<>();
lexer.register("(abc)+", 0);
List<Match<Integer>> tokens = lexer.lexAll("abcabc", 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(tokens.size(), 1);
}
} }