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authorGravatar misterg <misterg@google.com>2017-09-19 16:54:40 -0400
committerGravatar misterg <misterg@google.com>2017-09-19 16:54:40 -0400
commitc2e754829628d1e9b7a16b3389cfdace76950fdf (patch)
tree5a7f056f44e27c30e10025113b644f0b3b5801fc /absl/strings/ascii_test.cc
Initial Commit
Diffstat (limited to 'absl/strings/ascii_test.cc')
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diff --git a/absl/strings/ascii_test.cc b/absl/strings/ascii_test.cc
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+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/ascii.h"
+
+#include <cctype>
+#include <clocale>
+#include <cstring>
+#include <string>
+
+#include "gtest/gtest.h"
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+
+namespace {
+
+TEST(AsciiIsFoo, All) {
+ for (int i = 0; i < 256; i++) {
+ if ((i >= 'a' && i <= 'z') || (i >= 'A' && i <= 'Z'))
+ EXPECT_TRUE(absl::ascii_isalpha(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_isalpha(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if ((i >= '0' && i <= '9'))
+ EXPECT_TRUE(absl::ascii_isdigit(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_isdigit(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (absl::ascii_isalpha(i) || absl::ascii_isdigit(i))
+ EXPECT_TRUE(absl::ascii_isalnum(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_isalnum(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (i != '\0' && strchr(" \r\n\t\v\f", i))
+ EXPECT_TRUE(absl::ascii_isspace(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_isspace(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (i >= 32 && i < 127)
+ EXPECT_TRUE(absl::ascii_isprint(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_isprint(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (absl::ascii_isprint(i) && !absl::ascii_isspace(i) &&
+ !absl::ascii_isalnum(i))
+ EXPECT_TRUE(absl::ascii_ispunct(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_ispunct(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (i == ' ' || i == '\t')
+ EXPECT_TRUE(absl::ascii_isblank(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_isblank(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (i < 32 || i == 127)
+ EXPECT_TRUE(absl::ascii_iscntrl(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_iscntrl(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (absl::ascii_isdigit(i) || (i >= 'A' && i <= 'F') ||
+ (i >= 'a' && i <= 'f'))
+ EXPECT_TRUE(absl::ascii_isxdigit(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_isxdigit(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (i > 32 && i < 127)
+ EXPECT_TRUE(absl::ascii_isgraph(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_isgraph(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (i >= 'A' && i <= 'Z')
+ EXPECT_TRUE(absl::ascii_isupper(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_isupper(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 256; i++) {
+ if (i >= 'a' && i <= 'z')
+ EXPECT_TRUE(absl::ascii_islower(i)) << ": failed on " << i;
+ else
+ EXPECT_TRUE(!absl::ascii_islower(i)) << ": failed on " << i;
+ }
+ for (int i = 0; i < 128; i++) {
+ EXPECT_TRUE(absl::ascii_isascii(i)) << ": failed on " << i;
+ }
+ for (int i = 128; i < 256; i++) {
+ EXPECT_TRUE(!absl::ascii_isascii(i)) << ": failed on " << i;
+ }
+
+ // The official is* functions don't accept negative signed chars, but
+ // our absl::ascii_is* functions do.
+ for (int i = 0; i < 256; i++) {
+ signed char sc = static_cast<signed char>(static_cast<unsigned char>(i));
+ EXPECT_EQ(absl::ascii_isalpha(i), absl::ascii_isalpha(sc)) << i;
+ EXPECT_EQ(absl::ascii_isdigit(i), absl::ascii_isdigit(sc)) << i;
+ EXPECT_EQ(absl::ascii_isalnum(i), absl::ascii_isalnum(sc)) << i;
+ EXPECT_EQ(absl::ascii_isspace(i), absl::ascii_isspace(sc)) << i;
+ EXPECT_EQ(absl::ascii_ispunct(i), absl::ascii_ispunct(sc)) << i;
+ EXPECT_EQ(absl::ascii_isblank(i), absl::ascii_isblank(sc)) << i;
+ EXPECT_EQ(absl::ascii_iscntrl(i), absl::ascii_iscntrl(sc)) << i;
+ EXPECT_EQ(absl::ascii_isxdigit(i), absl::ascii_isxdigit(sc)) << i;
+ EXPECT_EQ(absl::ascii_isprint(i), absl::ascii_isprint(sc)) << i;
+ EXPECT_EQ(absl::ascii_isgraph(i), absl::ascii_isgraph(sc)) << i;
+ EXPECT_EQ(absl::ascii_isupper(i), absl::ascii_isupper(sc)) << i;
+ EXPECT_EQ(absl::ascii_islower(i), absl::ascii_islower(sc)) << i;
+ EXPECT_EQ(absl::ascii_isascii(i), absl::ascii_isascii(sc)) << i;
+ }
+}
+
+// Checks that absl::ascii_isfoo returns the same value as isfoo in the C
+// locale.
+TEST(AsciiIsFoo, SameAsIsFoo) {
+ // temporarily change locale to C. It should already be C, but just for safety
+ std::string old_locale = setlocale(LC_CTYPE, nullptr);
+ ASSERT_TRUE(setlocale(LC_CTYPE, "C"));
+
+ for (int i = 0; i < 256; i++) {
+ EXPECT_EQ(isalpha(i) != 0, absl::ascii_isalpha(i)) << i;
+ EXPECT_EQ(isdigit(i) != 0, absl::ascii_isdigit(i)) << i;
+ EXPECT_EQ(isalnum(i) != 0, absl::ascii_isalnum(i)) << i;
+ EXPECT_EQ(isspace(i) != 0, absl::ascii_isspace(i)) << i;
+ EXPECT_EQ(ispunct(i) != 0, absl::ascii_ispunct(i)) << i;
+ EXPECT_EQ(isblank(i) != 0, absl::ascii_isblank(i)) << i;
+ EXPECT_EQ(iscntrl(i) != 0, absl::ascii_iscntrl(i)) << i;
+ EXPECT_EQ(isxdigit(i) != 0, absl::ascii_isxdigit(i)) << i;
+ EXPECT_EQ(isprint(i) != 0, absl::ascii_isprint(i)) << i;
+ EXPECT_EQ(isgraph(i) != 0, absl::ascii_isgraph(i)) << i;
+ EXPECT_EQ(isupper(i) != 0, absl::ascii_isupper(i)) << i;
+ EXPECT_EQ(islower(i) != 0, absl::ascii_islower(i)) << i;
+ EXPECT_EQ(isascii(i) != 0, absl::ascii_isascii(i)) << i;
+ }
+
+ // restore the old locale.
+ ASSERT_TRUE(setlocale(LC_CTYPE, old_locale.c_str()));
+}
+
+TEST(AsciiToFoo, All) {
+ // temporarily change locale to C. It should already be C, but just for safety
+ std::string old_locale = setlocale(LC_CTYPE, nullptr);
+ ASSERT_TRUE(setlocale(LC_CTYPE, "C"));
+
+ for (int i = 0; i < 256; i++) {
+ if (absl::ascii_islower(i))
+ EXPECT_EQ(absl::ascii_toupper(i), 'A' + (i - 'a')) << i;
+ else
+ EXPECT_EQ(absl::ascii_toupper(i), static_cast<char>(i)) << i;
+
+ if (absl::ascii_isupper(i))
+ EXPECT_EQ(absl::ascii_tolower(i), 'a' + (i - 'A')) << i;
+ else
+ EXPECT_EQ(absl::ascii_tolower(i), static_cast<char>(i)) << i;
+
+ // These CHECKs only hold in a C locale.
+ EXPECT_EQ(static_cast<char>(tolower(i)), absl::ascii_tolower(i)) << i;
+ EXPECT_EQ(static_cast<char>(toupper(i)), absl::ascii_toupper(i)) << i;
+
+ // The official to* functions don't accept negative signed chars, but
+ // our absl::ascii_to* functions do.
+ signed char sc = static_cast<signed char>(static_cast<unsigned char>(i));
+ EXPECT_EQ(absl::ascii_tolower(i), absl::ascii_tolower(sc)) << i;
+ EXPECT_EQ(absl::ascii_toupper(i), absl::ascii_toupper(sc)) << i;
+ }
+
+ // restore the old locale.
+ ASSERT_TRUE(setlocale(LC_CTYPE, old_locale.c_str()));
+}
+
+TEST(AsciiStrTo, Lower) {
+ const char buf[] = "ABCDEF";
+ const std::string str("GHIJKL");
+ const std::string str2("MNOPQR");
+ const absl::string_view sp(str2);
+
+ EXPECT_EQ("abcdef", absl::AsciiStrToLower(buf));
+ EXPECT_EQ("ghijkl", absl::AsciiStrToLower(str));
+ EXPECT_EQ("mnopqr", absl::AsciiStrToLower(sp));
+
+ char mutable_buf[] = "Mutable";
+ std::transform(mutable_buf, mutable_buf + strlen(mutable_buf),
+ mutable_buf, absl::ascii_tolower);
+ EXPECT_STREQ("mutable", mutable_buf);
+}
+
+TEST(AsciiStrTo, Upper) {
+ const char buf[] = "abcdef";
+ const std::string str("ghijkl");
+ const std::string str2("mnopqr");
+ const absl::string_view sp(str2);
+
+ EXPECT_EQ("ABCDEF", absl::AsciiStrToUpper(buf));
+ EXPECT_EQ("GHIJKL", absl::AsciiStrToUpper(str));
+ EXPECT_EQ("MNOPQR", absl::AsciiStrToUpper(sp));
+
+ char mutable_buf[] = "Mutable";
+ std::transform(mutable_buf, mutable_buf + strlen(mutable_buf),
+ mutable_buf, absl::ascii_toupper);
+ EXPECT_STREQ("MUTABLE", mutable_buf);
+}
+
+TEST(StripLeadingAsciiWhitespace, FromStringView) {
+ EXPECT_EQ(absl::string_view{},
+ absl::StripLeadingAsciiWhitespace(absl::string_view{}));
+ EXPECT_EQ("foo", absl::StripLeadingAsciiWhitespace({"foo"}));
+ EXPECT_EQ("foo", absl::StripLeadingAsciiWhitespace({"\t \n\f\r\n\vfoo"}));
+ EXPECT_EQ("foo foo\n ",
+ absl::StripLeadingAsciiWhitespace({"\t \n\f\r\n\vfoo foo\n "}));
+ EXPECT_EQ(absl::string_view{}, absl::StripLeadingAsciiWhitespace(
+ {"\t \n\f\r\v\n\t \n\f\r\v\n"}));
+}
+
+TEST(StripLeadingAsciiWhitespace, InPlace) {
+ std::string str;
+
+ absl::StripLeadingAsciiWhitespace(&str);
+ EXPECT_EQ("", str);
+
+ str = "foo";
+ absl::StripLeadingAsciiWhitespace(&str);
+ EXPECT_EQ("foo", str);
+
+ str = "\t \n\f\r\n\vfoo";
+ absl::StripLeadingAsciiWhitespace(&str);
+ EXPECT_EQ("foo", str);
+
+ str = "\t \n\f\r\n\vfoo foo\n ";
+ absl::StripLeadingAsciiWhitespace(&str);
+ EXPECT_EQ("foo foo\n ", str);
+
+ str = "\t \n\f\r\v\n\t \n\f\r\v\n";
+ absl::StripLeadingAsciiWhitespace(&str);
+ EXPECT_EQ(absl::string_view{}, str);
+}
+
+TEST(StripTrailingAsciiWhitespace, FromStringView) {
+ EXPECT_EQ(absl::string_view{},
+ absl::StripTrailingAsciiWhitespace(absl::string_view{}));
+ EXPECT_EQ("foo", absl::StripTrailingAsciiWhitespace({"foo"}));
+ EXPECT_EQ("foo", absl::StripTrailingAsciiWhitespace({"foo\t \n\f\r\n\v"}));
+ EXPECT_EQ(" \nfoo foo",
+ absl::StripTrailingAsciiWhitespace({" \nfoo foo\t \n\f\r\n\v"}));
+ EXPECT_EQ(absl::string_view{}, absl::StripTrailingAsciiWhitespace(
+ {"\t \n\f\r\v\n\t \n\f\r\v\n"}));
+}
+
+TEST(StripTrailingAsciiWhitespace, InPlace) {
+ std::string str;
+
+ absl::StripTrailingAsciiWhitespace(&str);
+ EXPECT_EQ("", str);
+
+ str = "foo";
+ absl::StripTrailingAsciiWhitespace(&str);
+ EXPECT_EQ("foo", str);
+
+ str = "foo\t \n\f\r\n\v";
+ absl::StripTrailingAsciiWhitespace(&str);
+ EXPECT_EQ("foo", str);
+
+ str = " \nfoo foo\t \n\f\r\n\v";
+ absl::StripTrailingAsciiWhitespace(&str);
+ EXPECT_EQ(" \nfoo foo", str);
+
+ str = "\t \n\f\r\v\n\t \n\f\r\v\n";
+ absl::StripTrailingAsciiWhitespace(&str);
+ EXPECT_EQ(absl::string_view{}, str);
+}
+
+TEST(StripAsciiWhitespace, FromStringView) {
+ EXPECT_EQ(absl::string_view{},
+ absl::StripAsciiWhitespace(absl::string_view{}));
+ EXPECT_EQ("foo", absl::StripAsciiWhitespace({"foo"}));
+ EXPECT_EQ("foo",
+ absl::StripAsciiWhitespace({"\t \n\f\r\n\vfoo\t \n\f\r\n\v"}));
+ EXPECT_EQ("foo foo", absl::StripAsciiWhitespace(
+ {"\t \n\f\r\n\vfoo foo\t \n\f\r\n\v"}));
+ EXPECT_EQ(absl::string_view{},
+ absl::StripAsciiWhitespace({"\t \n\f\r\v\n\t \n\f\r\v\n"}));
+}
+
+TEST(StripAsciiWhitespace, InPlace) {
+ std::string str;
+
+ absl::StripAsciiWhitespace(&str);
+ EXPECT_EQ("", str);
+
+ str = "foo";
+ absl::StripAsciiWhitespace(&str);
+ EXPECT_EQ("foo", str);
+
+ str = "\t \n\f\r\n\vfoo\t \n\f\r\n\v";
+ absl::StripAsciiWhitespace(&str);
+ EXPECT_EQ("foo", str);
+
+ str = "\t \n\f\r\n\vfoo foo\t \n\f\r\n\v";
+ absl::StripAsciiWhitespace(&str);
+ EXPECT_EQ("foo foo", str);
+
+ str = "\t \n\f\r\v\n\t \n\f\r\v\n";
+ absl::StripAsciiWhitespace(&str);
+ EXPECT_EQ(absl::string_view{}, str);
+}
+
+TEST(RemoveExtraAsciiWhitespace, InPlace) {
+ const char* inputs[] = {"No extra space",
+ " Leading whitespace",
+ "Trailing whitespace ",
+ " Leading and trailing ",
+ " Whitespace \t in\v middle ",
+ "'Eeeeep! \n Newlines!\n",
+ "nospaces",
+ "",
+ "\n\t a\t\n\nb \t\n"};
+
+ const char* outputs[] = {
+ "No extra space",
+ "Leading whitespace",
+ "Trailing whitespace",
+ "Leading and trailing",
+ "Whitespace in middle",
+ "'Eeeeep! Newlines!",
+ "nospaces",
+ "",
+ "a\nb",
+ };
+ const int NUM_TESTS = ABSL_ARRAYSIZE(inputs);
+
+ for (int i = 0; i < NUM_TESTS; i++) {
+ std::string s(inputs[i]);
+ absl::RemoveExtraAsciiWhitespace(&s);
+ EXPECT_EQ(outputs[i], s);
+ }
+}
+
+} // namespace