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explain position information numbers in syntax exception

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Simulant
2024-03-23 22:02:54 +01:00
parent f1c9d0787b
commit d69d5e284b
10 changed files with 90 additions and 90 deletions
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66
src/test/java/org/json/junit/JSONTokenerTest.java
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@@ -233,7 +233,7 @@ public class JSONTokenerTest {
/**
* Verify that next and back are working properly and tracking the correct positions
* with different new line combinations.
* with different new in line combinations.
*/
@Test
public void testNextBackComboWithNewLines() {
@@ -241,74 +241,74 @@ public class JSONTokenerTest {
// ^ ^ ^ ^
// index positions 0 8 16 36
final JSONTokener tokener = new JSONTokener(testString);
assertEquals(" at 0 [character 1 line 1]", tokener.toString());
assertEquals(" at index 0 [character number 1 in line 1]", tokener.toString());
assertEquals('t',tokener.next());
assertEquals(" at 1 [character 2 line 1]", tokener.toString());
assertEquals(" at index 1 [character number 2 in line 1]", tokener.toString());
tokener.skipTo('\n');
assertEquals("skipTo() improperly modifying indexes"," at 7 [character 8 line 1]", tokener.toString());
assertEquals("skipTo() improperly modifying indexes"," at index 7 [character number 8 in line 1]", tokener.toString());
assertEquals('\n',tokener.next());
assertEquals(" at 8 [character 0 line 2]", tokener.toString());
assertEquals(" at index 8 [character number 0 in line 2]", tokener.toString());
assertEquals('A',tokener.next());
assertEquals(" at 9 [character 1 line 2]", tokener.toString());
assertEquals(" at index 9 [character number 1 in line 2]", tokener.toString());
tokener.back();
assertEquals(" at 8 [character 0 line 2]", tokener.toString());
assertEquals(" at index 8 [character number 0 in line 2]", tokener.toString());
tokener.skipTo('\r');
assertEquals("skipTo() improperly modifying indexes"," at 14 [character 6 line 2]", tokener.toString());
// verify \r\n combo doesn't increment the line twice
assertEquals("skipTo() improperly modifying indexes"," at index 14 [character number 6 in line 2]", tokener.toString());
// verify \r\n combo doesn't increment the in line twice
assertEquals('\r', tokener.next());
assertEquals(" at 15 [character 0 line 3]", tokener.toString());
assertEquals(" at index 15 [character number 0 in line 3]", tokener.toString());
assertEquals('\n', tokener.next());
assertEquals(" at 16 [character 0 line 3]", tokener.toString());
// verify stepping back after reading the \n of an \r\n combo doesn't increment the line incorrectly
assertEquals(" at index 16 [character number 0 in line 3]", tokener.toString());
// verify stepping back after reading the \n of an \r\n combo doesn't increment the in line incorrectly
tokener.back();
assertEquals(" at 15 [character 6 line 2]", tokener.toString());
assertEquals(" at index 15 [character number 6 in line 2]", tokener.toString());
assertEquals('\n', tokener.next());
assertEquals(" at 16 [character 0 line 3]", tokener.toString());
assertEquals(" at index 16 [character number 0 in line 3]", tokener.toString());
assertEquals('W', tokener.next());
assertEquals(" at 17 [character 1 line 3]", tokener.toString());
assertEquals(" at index 17 [character number 1 in line 3]", tokener.toString());
assertEquals('i', tokener.next());
assertEquals(" at 18 [character 2 line 3]", tokener.toString());
assertEquals(" at index 18 [character number 2 in line 3]", tokener.toString());
tokener.skipTo('\r');
assertEquals("skipTo() improperly modifying indexes"," at 35 [character 19 line 3]", tokener.toString());
assertEquals("skipTo() improperly modifying indexes"," at index 35 [character number 19 in line 3]", tokener.toString());
assertEquals('\r', tokener.next());
assertEquals(" at 36 [character 0 line 4]", tokener.toString());
assertEquals(" at index 36 [character number 0 in line 4]", tokener.toString());
tokener.back();
assertEquals(" at 35 [character 19 line 3]", tokener.toString());
assertEquals(" at index 35 [character number 19 in line 3]", tokener.toString());
assertEquals('\r', tokener.next());
assertEquals(" at 36 [character 0 line 4]", tokener.toString());
assertEquals(" at index 36 [character number 0 in line 4]", tokener.toString());
assertEquals('N', tokener.next());
assertEquals(" at 37 [character 1 line 4]", tokener.toString());
assertEquals(" at index 37 [character number 1 in line 4]", tokener.toString());
// verify we get the same data just walking though, no calls to back
final JSONTokener t2 = new JSONTokener(testString);
for(int i=0; i<7; i++) {
assertTrue(t2.toString().startsWith(" at " + i + " "));
assertTrue(t2.toString().startsWith(" at index " + i + " "));
assertEquals(testString.charAt(i), t2.next());
}
assertEquals(" at 7 [character 8 line 1]", t2.toString());
assertEquals(" at index 7 [character number 8 in line 1]", t2.toString());
assertEquals(testString.charAt(7), t2.next());
assertEquals(" at 8 [character 0 line 2]", t2.toString());
assertEquals(" at index 8 [character number 0 in line 2]", t2.toString());
for(int i=8; i<14; i++) {
assertTrue(t2.toString().startsWith(" at " + i + " "));
assertTrue(t2.toString().startsWith(" at index " + i + " "));
assertEquals(testString.charAt(i), t2.next());
}
assertEquals(" at 14 [character 6 line 2]", t2.toString());
assertEquals(" at index 14 [character number 6 in line 2]", t2.toString());
assertEquals('\r', t2.next());
assertEquals(" at 15 [character 0 line 3]", t2.toString());
assertEquals(" at index 15 [character number 0 in line 3]", t2.toString());
assertEquals('\n', t2.next());
assertEquals(" at 16 [character 0 line 3]", t2.toString());
assertEquals(" at index 16 [character number 0 in line 3]", t2.toString());
assertEquals('W', t2.next());
assertEquals(" at 17 [character 1 line 3]", t2.toString());
assertEquals(" at index 17 [character number 1 in line 3]", t2.toString());
for(int i=17; i<37; i++) {
assertTrue(t2.toString().startsWith(" at " + i + " "));
assertTrue(t2.toString().startsWith(" at index " + i + " "));
assertEquals(testString.charAt(i), t2.next());
}
assertEquals(" at 37 [character 1 line 4]", t2.toString());
assertEquals(" at index 37 [character number 1 in line 4]", t2.toString());
for(int i=37; i<testString.length(); i++) {
assertTrue(t2.toString().startsWith(" at " + i + " "));
assertTrue(t2.toString().startsWith(" at index " + i + " "));
assertEquals(testString.charAt(i), t2.next());
}
assertEquals(" at "+ testString.length() +" [character 9 line 4]", t2.toString());
assertEquals(" at index "+ testString.length() +" [character number 9 in line 4]", t2.toString());
// end of the input
assertEquals(0, t2.next());
assertFalse(t2.more());