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//===- unittests/Support/UnicodeTest.cpp - Unicode.h tests ----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Unicode.h"
#include "gtest/gtest.h"
namespace llvm {
namespace sys {
namespace unicode {
namespace {
TEST(Unicode, columnWidthUTF8) {
EXPECT_EQ(0, columnWidthUTF8(""));
EXPECT_EQ(1, columnWidthUTF8(" "));
EXPECT_EQ(1, columnWidthUTF8("a"));
EXPECT_EQ(1, columnWidthUTF8("~"));
EXPECT_EQ(6, columnWidthUTF8("abcdef"));
EXPECT_EQ(-1, columnWidthUTF8("\x01"));
EXPECT_EQ(-1, columnWidthUTF8("aaaaaaaaaa\x01"));
EXPECT_EQ(-1, columnWidthUTF8("\342\200\213")); // 200B ZERO WIDTH SPACE
// 00AD SOFT HYPHEN is displayed on most terminals as a space or a dash. Some
// text editors display it only when a line is broken at it, some use it as a
// line-break hint, but don't display. We choose terminal-oriented
// interpretation.
EXPECT_EQ(1, columnWidthUTF8("\302\255"));
EXPECT_EQ(0, columnWidthUTF8("\314\200")); // 0300 COMBINING GRAVE ACCENT
EXPECT_EQ(1, columnWidthUTF8("\340\270\201")); // 0E01 THAI CHARACTER KO KAI
EXPECT_EQ(2, columnWidthUTF8("\344\270\200")); // CJK UNIFIED IDEOGRAPH-4E00
EXPECT_EQ(4, columnWidthUTF8("\344\270\200\344\270\200"));
EXPECT_EQ(3, columnWidthUTF8("q\344\270\200"));
EXPECT_EQ(3, columnWidthUTF8("\314\200\340\270\201\344\270\200"));
// Invalid UTF-8 strings, columnWidthUTF8 should error out.
EXPECT_EQ(-2, columnWidthUTF8("\344"));
EXPECT_EQ(-2, columnWidthUTF8("\344\270"));
EXPECT_EQ(-2, columnWidthUTF8("\344\270\033"));
EXPECT_EQ(-2, columnWidthUTF8("\344\270\300"));
EXPECT_EQ(-2, columnWidthUTF8("\377\366\355"));
EXPECT_EQ(-2, columnWidthUTF8("qwer\344"));
EXPECT_EQ(-2, columnWidthUTF8("qwer\344\270"));
EXPECT_EQ(-2, columnWidthUTF8("qwer\344\270\033"));
EXPECT_EQ(-2, columnWidthUTF8("qwer\344\270\300"));
EXPECT_EQ(-2, columnWidthUTF8("qwer\377\366\355"));
// UTF-8 sequences longer than 4 bytes correspond to unallocated Unicode
// characters.
EXPECT_EQ(-2, columnWidthUTF8("\370\200\200\200\200")); // U+200000
EXPECT_EQ(-2, columnWidthUTF8("\374\200\200\200\200\200")); // U+4000000
}
TEST(Unicode, isPrintable) {
EXPECT_FALSE(isPrintable(0)); // <control-0000>-<control-001F>
EXPECT_FALSE(isPrintable(0x01));
EXPECT_FALSE(isPrintable(0x1F));
EXPECT_TRUE(isPrintable(' '));
EXPECT_TRUE(isPrintable('A'));
EXPECT_TRUE(isPrintable('~'));
EXPECT_FALSE(isPrintable(0x7F)); // <control-007F>..<control-009F>
EXPECT_FALSE(isPrintable(0x90));
EXPECT_FALSE(isPrintable(0x9F));
EXPECT_TRUE(isPrintable(0xAC));
EXPECT_TRUE(isPrintable(0xAD)); // SOFT HYPHEN is displayed on most terminals
// as either a space or a dash.
EXPECT_TRUE(isPrintable(0xAE));
EXPECT_TRUE(isPrintable(0x0377)); // GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
EXPECT_FALSE(isPrintable(0x0378)); // <reserved-0378>..<reserved-0379>
EXPECT_FALSE(isPrintable(0x0600)); // ARABIC NUMBER SIGN
EXPECT_FALSE(isPrintable(0x1FFFF)); // <reserved-1F774>..<noncharacter-1FFFF>
EXPECT_TRUE(isPrintable(0x20000)); // CJK UNIFIED IDEOGRAPH-20000
EXPECT_FALSE(isPrintable(0x10FFFF)); // noncharacter
}
} // namespace
} // namespace unicode
} // namespace sys
} // namespace llvm
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