1 files changed, 296 insertions, 0 deletions
diff --git a/test/test_string.cpp b/test/test_string.cpp
new file mode 100644
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--- /dev/null
+++ b/test/test_string.cpp
@@ -0,0 +1,296 @@
+/*
+ * libfud
+ * Copyright 2024 Dominick Allen
+ *
+ * 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 "fud_array.hpp"
+#include "fud_string.hpp"
+#include "test_common.hpp"
+
+#include "gtest/gtest.h"
+
+namespace fud {
+
+TEST(FudString, CStringLength)
+{
+    ASSERT_EQ(cStringLength(nullptr), -1);
+    ASSERT_EQ(cStringLength(""), 0);
+    ASSERT_EQ(cStringLength("a"), 1);
+    ASSERT_EQ(cStringLength(MULTI_BYTE_LITERAL), sizeof(MULTI_BYTE_LITERAL) - 1);
+    ASSERT_EQ(cStringLength(MULTI_BYTE_LITERAL), sizeof(MULTI_BYTE_LITERAL) - 1);
+}
+
+TEST(FudString, BasicStringOps)
+{
+    const Array<utf8, 2> invalid{0xFF, 0x00};
+    ASSERT_FALSE(Ascii::valid(invalid[0]));
+    const Array<utf8, 2> invalid2{0xFF, 0x00};
+    String fudString{invalid2.data()};
+    ASSERT_EQ(fudString.length(), 1);
+    ASSERT_EQ(fudString.data()[0], invalid[0]);
+    ASSERT_FALSE(Ascii::valid(fudString.data()[0]));
+    ASSERT_FALSE(fudString.utf8Valid());
+
+    fudString = String{"TEST"};
+    ASSERT_TRUE(fudString.utf8Valid());
+
+    StringView view1{};
+    ASSERT_FALSE(view1.utf8Valid());
+    StringView view2{fudString};
+    ASSERT_TRUE(view2.utf8Valid());
+    ASSERT_TRUE(view2.nullTerminated());
+}
+
+#if 0
+TEST(FudString, FindSubstringCxx)
+{
+    Array<uint8_t, sizeof(CHQUOTE)> basis{};
+    ASSERT_EQ(ExtCopyMem(basis.data(), basis.size(), CHQUOTE, sizeof(CHQUOTE)), ExtSuccess);
+    String fudString{basis.size() - 1, basis.size(), basis.data()};
+
+    StringView haystack{extString};
+    ASSERT_NE(haystack.length, 0);
+    ASSERT_NE(haystack.data, nullptr);
+
+    Array<uint8_t, sizeof("learning")> subBasis{};
+    ASSERT_EQ(ExtCopyMem(subBasis.data(), subBasis.size(), "learning", sizeof("learning")), ExtSuccess);
+    FudStringView needle{subBasis.size() - 1, subBasis.data()};
+
+    FudStringView stringView{};
+    auto findStatus = ext_string_find_substring(haystack, needle, &stringView);
+    ASSERT_EQ(findStatus, ExtSuccess);
+    // NOLINTBEGIN(cppcoreguidelines-pro-type-reinterpret-cast)
+    ASSERT_EQ(
+        ext_string_get_c_string(&extString) + sizeof("why waste time"),
+        reinterpret_cast<const char*>(stringView.data));
+    // NOLINTEND(cppcoreguidelines-pro-type-reinterpret-cast)
+}
+
+TEST(TestFudString, StringBuffer)
+{
+    Result<FixedStringBuffer<1>, ExtStatus> bufferResult{FixedStringBuffer<1>::fromLiteral(nullptr)};
+    ASSERT_TRUE(bufferResult.isError());
+    ASSERT_EQ(bufferResult.getError(), ExtNullPointer);
+
+    Array<uint8_t, 1> data1{};
+    bufferResult = FixedStringBuffer<1>::fromArray(data1);
+    ASSERT_TRUE(bufferResult.isOkay());
+    FixedStringBuffer<1> buffer1{std::move(bufferResult.getOkay())};
+    ASSERT_EQ(buffer1.m_string.m_data[0], '\0');
+    ASSERT_EQ(buffer1.m_string.m_length, 0);
+    ASSERT_EQ(buffer1.m_string.m_size, 1);
+
+    bufferResult = FixedStringBuffer<1>::fromLiteral("a");
+    ASSERT_TRUE(bufferResult.isError());
+    ASSERT_EQ(bufferResult.getError(), ExtInvalidInput);
+
+    data1[0] = 'a';
+    bufferResult = FixedStringBuffer<1>::fromArray(data1);
+    ASSERT_TRUE(bufferResult.isError());
+    ASSERT_EQ(bufferResult.getError(), ExtInvalidInput);
+
+    bufferResult = FixedStringBuffer<1>::fromLiteral("");
+    ASSERT_TRUE(bufferResult.isOkay());
+    buffer1 = {bufferResult.getOkay()};
+    ASSERT_EQ(buffer1.m_string.m_data[0], '\0');
+    ASSERT_EQ(buffer1.m_string.m_length, 0);
+    ASSERT_EQ(buffer1.m_string.m_size, 1);
+
+    StringView view1{buffer1};
+    ASSERT_EQ(buffer1.append(view1), ExtInvalidInput);
+
+    ASSERT_EQ(buffer1, buffer1);
+    const auto buffer2{buffer1};
+    ASSERT_EQ(buffer1, buffer2);
+    const auto buffer3{buffer2}; // NOLINT(performance-unnecessary-copy-initialization)
+    ASSERT_EQ(buffer1, buffer3);
+    auto buffer4 = buffer3; // NOLINT(performance-unnecessary-copy-initialization)
+    ASSERT_EQ(buffer1, buffer4);
+
+    Array<uint8_t, sizeof("test")> data2{"test"};
+    auto bufferResult2{FixedStringBuffer<data2.size()>::fromArray(data2)};
+    ASSERT_TRUE(bufferResult2.isOkay());
+    FixedStringBuffer<data2.size()> bufferTest{std::move(bufferResult2.getOkay())};
+    ASSERT_EQ(bufferTest.m_string.m_data[0], 't');
+    ASSERT_EQ(bufferTest.m_string.m_data[4], '\0');
+    ASSERT_EQ(bufferTest.m_string.m_length, data2.size() - 1);
+    ASSERT_EQ(bufferTest.m_string.m_size, data2.size());
+
+    const StringView view2{bufferTest};
+    FixedStringBuffer<data2.size()> bufferTest2{};
+    ASSERT_EQ(bufferTest2.append(view2), ExtSuccess);
+    ASSERT_EQ(bufferTest2.append(view2), ExtFull);
+    ASSERT_EQ(bufferTest2.remainingLength(), 0);
+    bufferTest2.m_string.m_length++;
+    ASSERT_EQ(bufferTest2.remainingLength(), 0);
+    bufferTest2.clear();
+    ASSERT_EQ(bufferTest2.remainingLength(), data2.size() - 1);
+
+    bufferTest2.m_string.m_length = 0;
+    bufferTest2.m_memory.clear();
+    buffer1.m_string.m_data[0] = 'a';
+    view1.length = 1;
+    ASSERT_EQ(bufferTest2.append(view1), FudStringInvalid);
+    ASSERT_TRUE(bufferTest2.m_memory.pushBack('\0'));
+    ASSERT_EQ(bufferTest2.append(view1), ExtSuccess);
+
+    ASSERT_NE(bufferTest2, bufferTest);
+    bufferTest2.clear();
+    ASSERT_EQ(bufferTest2.append(view2), ExtSuccess);
+    ASSERT_EQ(bufferTest, bufferTest2);
+    bufferTest.data()[3] = 'a';
+    ASSERT_NE(bufferTest, bufferTest2);
+}
+
+TEST(FudString, SpanCxx)
+{
+    Array<uint8_t, sizeof(CHQUOTE)> basis{};
+    ASSERT_EQ(ExtCopyMem(basis.data(), basis.size(), CHQUOTE, sizeof(CHQUOTE)), ExtSuccess);
+    String fudString{basis.size(), basis.size() - 1, basis.data()};
+
+    StringView inputView{extString};
+    ASSERT_NE(inputView.length, 0);
+    ASSERT_EQ(inputView.length, sizeof(CHQUOTE) - 1);
+    ASSERT_NE(inputView.data, nullptr);
+
+    constexpr Array<uint8_t, charSetSize + 1> charArray{CHARACTER_SET};
+    Array<Utf8, charSetSize> utf8Array{};
+    for (auto idx = 0; idx < utf8Array.size(); ++idx) {
+        utf8Array[idx] = Utf8{Ascii{charArray[idx]}};
+    }
+
+    static_assert(!ext_lib::hasDuplicates(charArray));
+    auto temp = utf8Array[0];
+    utf8Array[0] = utf8Array[1];
+    auto characterSetResult{Utf8Set<charSetSize>::make(utf8Array)};
+    ASSERT_TRUE(characterSetResult.isError());
+    utf8Array[0] = temp;
+    characterSetResult = Utf8Set<charSetSize>::make(utf8Array);
+    ASSERT_TRUE(characterSetResult.isOkay());
+    auto characterSet = characterSetResult.getOkay();
+
+    FudStringView result{};
+    EXPECT_EQ(ext_string_span_set(inputView, nullptr, nullptr), ExtNullPointer);
+    ASSERT_EQ(ext_string_span_set(inputView, &characterSet, &result), ExtSuccess);
+
+    ASSERT_EQ(result.length, sizeof(", when ignorance is instantaneous?") - 1);
+    std::vector<char> resString(result.length + 1);
+    ASSERT_EQ(ExtCopyMem(resString.data(), resString.size(), result.data, result.length), ExtSuccess);
+    ASSERT_EQ(std::string(resString.data()), std::string(", when ignorance is instantaneous?"));
+
+    Array<uint8_t, 2> ex2{'l'};
+    StringView setView2{};
+    setView2.length = sizeof(ex2) - 1;
+    setView2.data = ex2.data();
+    StringView setView3{setView2};
+    int difference = -1;
+    ASSERT_EQ(ExtCompareMem(&setView2, sizeof(setView2), &setView3, sizeof(setView3), &difference), ExtSuccess);
+    ASSERT_EQ(difference, 0);
+
+    Array<ExtUtf8Impl, 1> setArray{{Utf8{Ascii{'l'}}}};
+    Utf8Set<1> charSet{setArray};
+    ASSERT_FALSE(charSet.isEmptySet());
+    ASSERT_TRUE(static_cast<ExtUtf8Set*>(&charSet)->contains(Utf8{Ascii{'l'}}));
+    ASSERT_TRUE(static_cast<ExtUtf8Set*>(&charSet)->contains(setArray[0]));
+
+    EXPECT_EQ(ext_string_c_span_set(inputView, nullptr, nullptr), ExtNullPointer);
+    ASSERT_EQ(ext_string_c_span_set(inputView, &charSet, &result), ExtSuccess);
+
+    ASSERT_EQ(result.length, sizeof("learning, when ignorance is instantaneous?") - 1);
+    StringView resultView{result};
+    ASSERT_TRUE(resultView.nullTerminated());
+    resString.resize(result.length + 1);
+    ASSERT_EQ(ExtCopyMem(resString.data(), resString.size(), result.data, result.length), ExtSuccess);
+    ASSERT_EQ(std::string(resString.data()), std::string("learning, when ignorance is instantaneous?"));
+}
+
+TEST(FudString, SpanSetInvalid)
+{
+    constexpr Array<uint8_t, charSetSize + 1> charArray{CHARACTER_SET};
+    Array<Utf8, charSetSize> utf8Array{};
+    for (auto idx = 0; idx < utf8Array.size(); ++idx) {
+        utf8Array[idx] = Utf8{Ascii{charArray[idx]}};
+    }
+    utf8Array[0] = Utf8{Ascii{0xFF}}; // NOLINT(readability-magic-numbers)
+
+    static_assert(!ext_lib::hasDuplicates(charArray));
+    auto characterSetResult{Utf8Set<charSetSize>::make(utf8Array)};
+    ASSERT_TRUE(characterSetResult.isOkay());
+    auto characterSet{characterSetResult.getOkay()};
+
+    Array<uint8_t, sizeof(CHQUOTE)> backing{CHQUOTE};
+    auto fudString{FudString::withBacking(backing)};
+
+    StringView inputView{extString};
+
+    Array<uint8_t, sizeof(CHARACTER_SET)> setBacking{CHARACTER_SET};
+    setBacking[0] = ExtUtf8::invalidAsciiCode.character();
+
+    FudStringView result{};
+    ASSERT_EQ(ext_string_span_set(inputView, &characterSet, &result), ExtUtf8Invalid);
+    ASSERT_EQ(ext_string_c_span_set(inputView, &characterSet, &result), ExtUtf8Invalid);
+}
+
+TEST(FudString, SpanSetInputInvalid)
+{
+    constexpr Array<uint8_t, charSetSize + 1> charArray{CHARACTER_SET};
+    Array<Utf8, charSetSize> utf8Array{};
+    for (auto idx = 0; idx < utf8Array.size(); ++idx) {
+        utf8Array[idx] = Utf8{Ascii{charArray[idx]}};
+    }
+
+    static_assert(!ext_lib::hasDuplicates(charArray));
+    auto characterSetResult{Utf8Set<charSetSize>::make(utf8Array)};
+    ASSERT_TRUE(characterSetResult.isOkay());
+    auto characterSet{characterSetResult.getOkay()};
+
+    Array<uint8_t, sizeof(CHQUOTE)> backing{CHQUOTE};
+    backing[0] = ExtUtf8::invalidAsciiCode.character();
+    auto fudString{FudString::withBacking(backing)};
+
+    StringView inputView{extString};
+
+    Array<uint8_t, sizeof(CHARACTER_SET)> setBacking{CHARACTER_SET};
+
+    FudStringView result{};
+    ASSERT_EQ(ext_string_span_set(inputView, &characterSet, &result), ExtUtf8Invalid);
+    ASSERT_EQ(ext_string_c_span_set(inputView, &characterSet, &result), ExtUtf8Invalid);
+}
+
+TEST(FudString, SpanSetNotFound)
+{
+    constexpr Array<uint8_t, sizeof("QZ")> setBacking{"QZ"};
+    Array<Utf8, sizeof(setBacking) - 1> utf8Array{};
+    for (auto idx = 0; idx < utf8Array.size(); ++idx) {
+        utf8Array[idx] = Utf8{Ascii{setBacking[idx]}};
+    }
+
+    static_assert(!ext_lib::hasDuplicates(setBacking));
+    auto characterSetResult{Utf8Set<utf8Array.size()>::make(utf8Array)};
+    ASSERT_TRUE(characterSetResult.isOkay());
+    auto characterSet{characterSetResult.getOkay()};
+
+    Array<uint8_t, sizeof(CHQUOTE)> backing{CHQUOTE};
+    auto fudString{FudString::withBacking(backing)};
+
+    StringView inputView{extString};
+
+    FudStringView result{};
+    ASSERT_EQ(ext_string_span_set(inputView, &characterSet, &result), ExtNotFound);
+    ASSERT_EQ(ext_string_c_span_set(inputView, &characterSet, &result), ExtNotFound);
+}
+
+#endif
+} // namespace fud