public void testAsUnicodeEscaper() throws IOException {
CharEscaper charEscaper =
createSimpleCharEscaper(
ImmutableMap.<Character, char[]>builder()
.put('x', "<hello>".toCharArray())
.put('\uD800', "<hi>".toCharArray())
.put('\uDC00', "<lo>".toCharArray())
.build());
UnicodeEscaper unicodeEscaper = Escapers.asUnicodeEscaper(charEscaper);
EscaperAsserts.assertBasic(unicodeEscaper);
assertEquals("<hello><hi><lo>", charEscaper.escape("x\uD800\uDC00"));
assertEquals("<hello><hi><lo>", unicodeEscaper.escape("x\uD800\uDC00"));
// Test that wrapped escapers acquire good Unicode semantics.
assertEquals("<hi><hello><lo>", charEscaper.escape("\uD800x\uDC00"));
try {
unicodeEscaper.escape("\uD800x\uDC00");
fail("should have failed for bad Unicode input");
} catch (IllegalArgumentException e) {
// pass
}
assertEquals("<lo><hi>", charEscaper.escape("\uDC00\uD800"));
try {
unicodeEscaper.escape("\uDC00\uD800");
fail("should have failed for bad Unicode input");
} catch (IllegalArgumentException e) {
// pass
}
}
public void testNullEscaper() throws IOException {
Escaper escaper = Escapers.nullEscaper();
EscaperAsserts.assertBasic(escaper);
String s = "\0\n\t\\az09~\uD800\uDC00\uFFFF";
assertEquals("null escaper should have no effect", s, escaper.escape(s));
}