private static void assertParseException(int offset, String message, final String json) {
ParseException exception =
assertException(
ParseException.class,
new Runnable() {
public void run() {
parse(json);
}
});
assertEquals(offset, exception.getOffset());
assertThat(exception.getMessage(), StringStartsWith.startsWith(message + " at"));
}
private static void assertParseException(int offset, int line, int column, final String json) {
ParseException exception =
assertException(
ParseException.class,
new Runnable() {
public void run() {
parse(json);
}
});
assertEquals("offset", offset, exception.getOffset());
assertEquals("line", line, exception.getLine());
assertEquals("column", column, exception.getColumn());
}
@Test
public void parse_rejectsEmptyReader() {
ParseException exception =
assertException(
ParseException.class,
new Runnable() {
public void run() {
try {
new JsonParser(new StringReader("")).parse();
} catch (IOException exception) {
throw new RuntimeException(exception);
}
}
});
assertEquals(0, exception.getOffset());
assertThat(exception.getMessage(), StringStartsWith.startsWith("Unexpected end of input at"));
}
@Test
public void parse_handlesPositionsCorrectlyWhenInputExceedsBufferSize() {
final String input = "{\n \"a\": 23,\n \"b\": 42,\n}";
ParseException exception =
assertException(
ParseException.class,
new Runnable() {
public void run() {
try {
new JsonParser(new StringReader(input), 3).parse();
} catch (IOException e) {
}
}
});
assertEquals(4, exception.getLine());
assertEquals(0, exception.getColumn());
assertEquals(24, exception.getOffset());
}