Merge remote-tracking branch 'origin/master'
This commit is contained in:
slavisa-baeldung
commit
b7385424a9
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@ -0,0 +1,27 @@
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package com.baeldung.java.regex;
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public class Result {
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private boolean found = false;
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private int count = 0;
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public Result() {
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}
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public boolean isFound() {
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return found;
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}
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public void setFound(boolean found) {
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this.found = found;
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}
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public int getCount() {
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return count;
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}
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public void setCount(int count) {
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this.count = count;
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}
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}
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@ -0,0 +1,503 @@
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package com.baeldung.java.regex;
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import static org.junit.Assert.*;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import org.junit.Test;
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public class RegexTest {
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private static Pattern pattern;
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private static Matcher matcher;
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@Test
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public void givenText_whenSimpleRegexMatches_thenCorrect() {
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Result result = runTest("foo", "foo");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 1);
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}
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@Test
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public void givenText_whenSimpleRegexMatchesTwice_thenCorrect() {
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Result result = runTest("foo", "foofoo");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 2);
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|
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}
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|
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@Test
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public void givenText_whenMatchesWithDotMetach_thenCorrect() {
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Result result = runTest(".", "foo");
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assertTrue(result.isFound());
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}
|
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|
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@Test
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public void givenRepeatedText_whenMatchesOnceWithDotMetach_thenCorrect() {
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Result result = runTest("foo.", "foofoo");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 1);
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}
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|
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@Test
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public void givenORSet_whenMatchesAny_thenCorrect() {
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Result result = runTest("[abc]", "b");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 1);
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}
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|
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@Test
|
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public void givenORSet_whenMatchesAnyAndAll_thenCorrect() {
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Result result = runTest("[abc]", "cab");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 3);
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}
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|
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@Test
|
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public void givenORSet_whenMatchesAllCombinations_thenCorrect() {
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Result result = runTest("[bcr]at", "bat cat rat");
|
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 3);
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}
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|
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@Test
|
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public void givenNORSet_whenMatchesNon_thenCorrect() {
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Result result = runTest("[^abc]", "g");
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assertTrue(result.isFound());
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}
|
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|
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@Test
|
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public void givenNORSet_whenMatchesAllExceptElements_thenCorrect() {
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Result result = runTest("[^bcr]at", "sat mat eat");
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assertTrue(result.isFound());
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}
|
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|
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@Test
|
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public void givenUpperCaseRange_whenMatchesUpperCase_thenCorrect() {
|
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Result result = runTest("[A-Z]", "Two Uppercase alphabets 34 overall");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 2);
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}
|
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|
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@Test
|
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public void givenLowerCaseRange_whenMatchesLowerCase_thenCorrect() {
|
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Result result = runTest("[a-z]", "Two Uppercase alphabets 34 overall");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 26);
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}
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|
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@Test
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public void givenBothLowerAndUpperCaseRange_whenMatchesAllLetters_thenCorrect() {
|
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Result result = runTest("[a-zA-Z]", "Two Uppercase alphabets 34 overall");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 28);
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}
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|
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@Test
|
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public void givenNumberRange_whenMatchesAccurately_thenCorrect() {
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Result result = runTest("[1-5]", "Two Uppercase alphabets 34 overall");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 2);
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}
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|
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@Test
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public void givenNumberRange_whenMatchesAccurately_thenCorrect2() {
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Result result = runTest("[30-35]", "Two Uppercase alphabets 34 overall");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 1);
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}
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|
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@Test
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public void givenTwoSets_whenMatchesUnion_thenCorrect() {
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Result result = runTest("[1-3[7-9]]", "123456789");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 6);
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}
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@Test
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public void givenTwoSets_whenMatchesIntersection_thenCorrect() {
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Result result = runTest("[1-6&&[3-9]]", "123456789");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 4);
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}
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|
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@Test
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public void givenSetWithSubtraction_whenMatchesAccurately_thenCorrect() {
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Result result = runTest("[0-9&&[^2468]]", "123456789");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 5);
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}
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|
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@Test
|
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public void givenDigits_whenMatches_thenCorrect() {
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Result result = runTest("\\d", "123");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 3);
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}
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@Test
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public void givenNonDigits_whenMatches_thenCorrect() {
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Result result = runTest("\\D", "a6c");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 2);
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}
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@Test
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public void givenWhiteSpace_whenMatches_thenCorrect() {
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Result result = runTest("\\s", "a c");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 1);
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}
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@Test
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public void givenNonWhiteSpace_whenMatches_thenCorrect() {
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Result result = runTest("\\S", "a c");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 2);
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}
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|
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@Test
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||||
public void givenWordCharacter_whenMatches_thenCorrect() {
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Result result = runTest("\\w", "hi!");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 2);
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}
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|
||||
@Test
|
||||
public void givenNonWordCharacter_whenMatches_thenCorrect() {
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Result result = runTest("\\W", "hi!");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 1);
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||||
}
|
||||
|
||||
@Test
|
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public void givenZeroOrOneQuantifier_whenMatches_thenCorrect() {
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Result result = runTest("\\a?", "hi");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 3);
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}
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|
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@Test
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public void givenZeroOrOneQuantifier_whenMatches_thenCorrect2() {
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Result result = runTest("\\a{0,1}", "hi");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 3);
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}
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||||
|
||||
@Test
|
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public void givenZeroOrManyQuantifier_whenMatches_thenCorrect() {
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Result result = runTest("\\a*", "hi");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 3);
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}
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||||
|
||||
@Test
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||||
public void givenZeroOrManyQuantifier_whenMatches_thenCorrect2() {
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Result result = runTest("\\a{0,}", "hi");
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||||
assertTrue(result.isFound());
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||||
assertEquals(result.getCount(), 3);
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||||
}
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||||
|
||||
@Test
|
||||
public void givenOneOrManyQuantifier_whenMatches_thenCorrect() {
|
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Result result = runTest("\\a+", "hi");
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||||
assertFalse(result.isFound());
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||||
}
|
||||
|
||||
@Test
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||||
public void givenOneOrManyQuantifier_whenMatches_thenCorrect2() {
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Result result = runTest("\\a{1,}", "hi");
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assertFalse(result.isFound());
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}
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|
||||
@Test
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public void givenBraceQuantifier_whenMatches_thenCorrect() {
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Result result = runTest("a{3}", "aaaaaa");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 2);
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}
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|
||||
@Test
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||||
public void givenBraceQuantifier_whenFailsToMatch_thenCorrect() {
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Result result = runTest("a{3}", "aa");
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assertFalse(result.isFound());
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}
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||||
|
||||
@Test
|
||||
public void givenBraceQuantifierWithRange_whenMatches_thenCorrect() {
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Result result = runTest("a{2,3}", "aaaa");
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assertTrue(result.isFound());
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||||
assertEquals(result.getCount(), 1);
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||||
}
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@Test
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public void givenBraceQuantifierWithRange_whenMatchesLazily_thenCorrect() {
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Result result = runTest("a{2,3}?", "aaaa");
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assertTrue(result.isFound());
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||||
assertEquals(result.getCount(), 2);
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||||
}
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||||
|
||||
@Test
|
||||
public void givenCapturingGroup_whenMatches_thenCorrect() {
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Result result = runTest("(\\d\\d)", "12");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 1);
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||||
}
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||||
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||||
@Test
|
||||
public void givenCapturingGroup_whenMatches_thenCorrect2() {
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Result result = runTest("(\\d\\d)", "1212");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 2);
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||||
}
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||||
|
||||
@Test
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public void givenCapturingGroup_whenMatches_thenCorrect3() {
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Result result = runTest("(\\d\\d)(\\d\\d)", "1212");
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assertTrue(result.isFound());
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assertEquals(result.getCount(), 1);
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||||
}
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|
||||
@Test
|
||||
public void givenCapturingGroup_whenMatchesWithBackReference_thenCorrect() {
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||||
Result result = runTest("(\\d\\d)\\1", "1212");
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||||
assertTrue(result.isFound());
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||||
assertEquals(result.getCount(), 1);
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||||
}
|
||||
|
||||
@Test
|
||||
public void givenCapturingGroup_whenMatchesWithBackReference_thenCorrect2() {
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||||
Result result = runTest("(\\d\\d)\\1\\1\\1", "12121212");
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||||
assertTrue(result.isFound());
|
||||
assertEquals(result.getCount(), 1);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenCapturingGroupAndWrongInput_whenMatchFailsWithBackReference_thenCorrect() {
|
||||
Result result = runTest("(\\d\\d)\\1", "1213");
|
||||
assertFalse(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenText_whenMatchesAtBeginning_thenCorrect() {
|
||||
Result result = runTest("^dog", "dogs are friendly");
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenTextAndWrongInput_whenMatchFailsAtBeginning_thenCorrect() {
|
||||
Result result = runTest("^dog", "are dogs are friendly?");
|
||||
assertFalse(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenText_whenMatchesAtEnd_thenCorrect() {
|
||||
Result result = runTest("dog$", "Man's best friend is a dog");
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenTextAndWrongInput_whenMatchFailsAtEnd_thenCorrect() {
|
||||
Result result = runTest("dog$", "is a dog man's best friend?");
|
||||
assertFalse(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenText_whenMatchesAtWordBoundary_thenCorrect() {
|
||||
Result result = runTest("\\bdog\\b", "a dog is friendly");
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenText_whenMatchesAtWordBoundary_thenCorrect2() {
|
||||
Result result = runTest("\\bdog\\b", "dog is man's best friend");
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenWrongText_whenMatchFailsAtWordBoundary_thenCorrect() {
|
||||
Result result = runTest("\\bdog\\b", "snoop dogg is a rapper");
|
||||
assertFalse(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenText_whenMatchesAtWordAndNonBoundary_thenCorrect() {
|
||||
Result result = runTest("\\bdog\\B", "snoop dogg is a rapper");
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithoutCanonEq_whenMatchFailsOnEquivalentUnicode_thenCorrect() {
|
||||
Result result = runTest("\u00E9", "\u0065\u0301");
|
||||
assertFalse(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithCanonEq_whenMatchesOnEquivalentUnicode_thenCorrect() {
|
||||
Result result = runTest("\u00E9", "\u0065\u0301", Pattern.CANON_EQ);
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithDefaultMatcher_whenMatchFailsOnDifferentCases_thenCorrect() {
|
||||
Result result = runTest("dog", "This is a Dog");
|
||||
assertFalse(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithCaseInsensitiveMatcher_whenMatchesOnDifferentCases_thenCorrect() {
|
||||
Result result = runTest("dog", "This is a Dog", Pattern.CASE_INSENSITIVE);
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithEmbeddedCaseInsensitiveMatcher_whenMatchesOnDifferentCases_thenCorrect() {
|
||||
Result result = runTest("(?i)dog", "This is a Dog");
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithComments_whenMatchFailsWithoutFlag_thenCorrect() {
|
||||
Result result = runTest("dog$ #check for word dog at end of text", "This is a dog");
|
||||
assertFalse(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithComments_whenMatchesWithFlag_thenCorrect() {
|
||||
Result result = runTest("dog$ #check for word dog at end of text", "This is a dog", Pattern.COMMENTS);
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithComments_whenMatchesWithEmbeddedFlag_thenCorrect() {
|
||||
Result result = runTest("(?x)dog$ #check for word dog at end of text", "This is a dog");
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithLineTerminator_whenMatchFails_thenCorrect() {
|
||||
Pattern pattern = Pattern.compile("(.*)");
|
||||
Matcher matcher = pattern.matcher("this is a text" + System.getProperty("line.separator") + " continued on another line");
|
||||
matcher.find();
|
||||
assertEquals("this is a text", matcher.group(1));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithLineTerminator_whenMatchesWithDotall_thenCorrect() {
|
||||
Pattern pattern = Pattern.compile("(.*)", Pattern.DOTALL);
|
||||
Matcher matcher = pattern.matcher("this is a text" + System.getProperty("line.separator") + " continued on another line");
|
||||
matcher.find();
|
||||
assertEquals("this is a text" + System.getProperty("line.separator") + " continued on another line", matcher.group(1));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegexWithLineTerminator_whenMatchesWithEmbeddedDotall_thenCorrect() {
|
||||
Pattern pattern = Pattern.compile("(?s)(.*)");
|
||||
Matcher matcher = pattern.matcher("this is a text" + System.getProperty("line.separator") + " continued on another line");
|
||||
matcher.find();
|
||||
assertEquals("this is a text" + System.getProperty("line.separator") + " continued on another line", matcher.group(1));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegex_whenMatchesWithoutLiteralFlag_thenCorrect() {
|
||||
Result result = runTest("(.*)", "text");
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegex_whenMatchFailsWithLiteralFlag_thenCorrect() {
|
||||
Result result = runTest("(.*)", "text", Pattern.LITERAL);
|
||||
assertFalse(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegex_whenMatchesWithLiteralFlag_thenCorrect() {
|
||||
Result result = runTest("(.*)", "text(.*)", Pattern.LITERAL);
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegex_whenMatchFailsWithoutMultilineFlag_thenCorrect() {
|
||||
Result result = runTest("dog$", "This is a dog" + System.getProperty("line.separator") + "this is a fox");
|
||||
assertFalse(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegex_whenMatchesWithMultilineFlag_thenCorrect() {
|
||||
Result result = runTest("dog$", "This is a dog" + System.getProperty("line.separator") + "this is a fox", Pattern.MULTILINE);
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenRegex_whenMatchesWithEmbeddedMultilineFlag_thenCorrect() {
|
||||
Result result = runTest("(?m)dog$", "This is a dog" + System.getProperty("line.separator") + "this is a fox");
|
||||
assertTrue(result.isFound());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenMatch_whenGetsIndices_thenCorrect() {
|
||||
Pattern pattern = Pattern.compile("dog");
|
||||
Matcher matcher = pattern.matcher("This dog is mine");
|
||||
matcher.find();
|
||||
assertEquals(5, matcher.start());
|
||||
assertEquals(8, matcher.end());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenStudyMethodsWork_thenCorrect() {
|
||||
Pattern pattern = Pattern.compile("dog");
|
||||
Matcher matcher = pattern.matcher("dogs are friendly");
|
||||
assertTrue(matcher.lookingAt());
|
||||
assertFalse(matcher.matches());
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenMatchesStudyMethodWorks_thenCorrect() {
|
||||
Pattern pattern = Pattern.compile("dog");
|
||||
Matcher matcher = pattern.matcher("dog");
|
||||
assertTrue(matcher.matches());
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenReplaceFirstWorks_thenCorrect() {
|
||||
Pattern pattern = Pattern.compile("dog");
|
||||
Matcher matcher = pattern.matcher("dogs are domestic animals, dogs are friendly");
|
||||
String newStr = matcher.replaceFirst("cat");
|
||||
assertEquals("cats are domestic animals, dogs are friendly", newStr);
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenReplaceAllWorks_thenCorrect() {
|
||||
Pattern pattern = Pattern.compile("dog");
|
||||
Matcher matcher = pattern.matcher("dogs are domestic animals, dogs are friendly");
|
||||
String newStr = matcher.replaceAll("cat");
|
||||
assertEquals("cats are domestic animals, cats are friendly", newStr);
|
||||
|
||||
}
|
||||
|
||||
public synchronized static Result runTest(String regex, String text) {
|
||||
pattern = Pattern.compile(regex);
|
||||
matcher = pattern.matcher(text);
|
||||
Result result = new Result();
|
||||
while (matcher.find())
|
||||
result.setCount(result.getCount() + 1);
|
||||
if (result.getCount() > 0)
|
||||
result.setFound(true);
|
||||
return result;
|
||||
}
|
||||
|
||||
public synchronized static Result runTest(String regex, String text, int flags) {
|
||||
pattern = Pattern.compile(regex, flags);
|
||||
matcher = pattern.matcher(text);
|
||||
Result result = new Result();
|
||||
while (matcher.find())
|
||||
result.setCount(result.getCount() + 1);
|
||||
if (result.getCount() > 0)
|
||||
result.setFound(true);
|
||||
return result;
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue