fix(search): make stop interrupt all phases

.gitea/workflows/ci-release.yaml

@@ -34,6 +34,10 @@ jobs:
         shell: bash
         run: cmake --build build --parallel
 
+      - name: Run tests
+        shell: bash
+        run: ctest --test-dir build --output-on-failure
+
       - name: Smoke test GUI
         shell: bash
         run: |

.gitignore

@@ -1 +1,7 @@
 /build/
+/cmake-build-*/
+/out/
+/.idea/
+/.vscode/
+/CMakeLists.txt.user
+/CMakeLists.txt.user.*

CHANGELOG.md

@@ -5,6 +5,37 @@ All notable changes to FolderScope are documented here.
 The project uses [Semantic Versioning](https://semver.org/). Release tags are
 formatted as `vMAJOR.MINOR.PATCH`.
 
+## [0.2.4] - 2026-07-25
+
+### Fixed
+
+- Corrected result-table context menu positioning.
+- Added validation for ISO date filters instead of silently accepting invalid
+  input.
+- Replaced the 2 GB size-filter limit with precise 64-bit inputs.
+- Preserved visible table order when acting on multiple selected files.
+- Made release preparation reject untracked files.
+
+### Added
+
+- Added automated tests for search primitives, large size inputs, and release
+  safeguards.
+- Added the test suite to the CI verification gate.
+
+## [0.2.3] - 2026-07-25
+
+### Added
+
+- Added a persistent cache for duplicate hashes and file-content matches with
+  automatic invalidation when files change.
+- Added cache controls and a context menu on column headers for per-column and
+  global automatic width.
+
+### Changed
+
+- Renamed duplicate result columns to `Duplicate Set` and `Keeper Priority`,
+  with tooltips explaining which copy is preferred.
+
 ## [0.2.2] - 2026-07-25
 
 ### Fixed
@@ -33,3 +64,5 @@ formatted as `vMAJOR.MINOR.PATCH`.
 [0.2.0]: https://gitea.forust.xyz/forust/folderscope/releases/tag/v0.2.0
 [0.2.1]: https://gitea.forust.xyz/forust/folderscope/releases/tag/v0.2.1
 [0.2.2]: https://gitea.forust.xyz/forust/folderscope/releases/tag/v0.2.2
+[0.2.3]: https://gitea.forust.xyz/forust/folderscope/releases/tag/v0.2.3
+[0.2.4]: https://gitea.forust.xyz/forust/folderscope/releases/tag/v0.2.4

CMakeLists.txt

@@ -14,14 +14,51 @@ set(CMAKE_AUTOMOC ON)
 
 find_package(Qt6 REQUIRED COMPONENTS Widgets Concurrent DBus)
 
+add_library(folderscope_core STATIC
+    src/search_core.cpp
+    src/search_core.h
+)
+target_link_libraries(folderscope_core PUBLIC Qt6::Core)
+target_compile_options(folderscope_core PRIVATE -Wall -Wextra -Wpedantic)
+target_include_directories(folderscope_core PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/src")
+
 qt_add_executable(searchmyfiles
+    src/long_long_spin_box.cpp
+    src/long_long_spin_box.h
     src/main.cpp
 )
 
-target_link_libraries(searchmyfiles PRIVATE Qt6::Widgets Qt6::Concurrent Qt6::DBus)
+target_link_libraries(searchmyfiles PRIVATE folderscope_core Qt6::Widgets Qt6::Concurrent Qt6::DBus)
 target_compile_options(searchmyfiles PRIVATE -Wall -Wextra -Wpedantic)
 target_compile_definitions(searchmyfiles PRIVATE FOLDERSCOPE_VERSION="${PROJECT_VERSION}")
 
 install(TARGETS searchmyfiles RUNTIME DESTINATION bin)
 install(FILES packaging/searchmyfiles.desktop
         DESTINATION share/applications)
+
+include(CTest)
+if (BUILD_TESTING)
+    find_package(Qt6 REQUIRED COMPONENTS Test)
+
+    qt_add_executable(search_core_tests
+        tests/search_core_test.cpp
+    )
+    target_link_libraries(search_core_tests PRIVATE folderscope_core Qt6::Test)
+    target_compile_options(search_core_tests PRIVATE -Wall -Wextra -Wpedantic)
+    add_test(NAME search-core COMMAND search_core_tests)
+
+    qt_add_executable(long_long_spin_box_tests
+        src/long_long_spin_box.cpp
+        src/long_long_spin_box.h
+        tests/long_long_spin_box_test.cpp
+    )
+    target_link_libraries(long_long_spin_box_tests PRIVATE Qt6::Widgets Qt6::Test)
+    target_compile_options(long_long_spin_box_tests PRIVATE -Wall -Wextra -Wpedantic)
+    target_include_directories(long_long_spin_box_tests PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/src")
+    add_test(NAME long-long-spin-box COMMAND long_long_spin_box_tests)
+    set_tests_properties(long-long-spin-box PROPERTIES ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
+
+    add_test(NAME release-rejects-untracked
+             COMMAND bash "${CMAKE_CURRENT_SOURCE_DIR}/tests/release_dirty_test.sh"
+                     "${CMAKE_CURRENT_SOURCE_DIR}/scripts/release.sh")
+endif()

README.md

@@ -13,8 +13,10 @@ single window.
 - filter by name patterns, size, timestamps, and file attributes;
 - inspect duplicate files and files with matching names;
 - search inside file contents, including text and hex;
+- reuse a persistent, automatically invalidated cache for content matches and
+  duplicate hashes;
 - show folder summaries and duplicate groups;
-- sort, resize, hide, and restore columns;
+- sort, resize, hide, and restore columns, including per-column header actions;
 - export results to CSV, TSV/TXT, HTML, XML, and JSON;
 - open files and folders, copy paths, and use context actions from the results
   table;
@@ -34,6 +36,12 @@ cmake --build build -j
 ./build/searchmyfiles
 ```
 
+Run the automated tests:
+
+```bash
+ctest --test-dir build --output-on-failure
+```
+
 Install into the current system:
 
 ```bash

VERSION

@@ -1 +1 @@
-0.2.2
+0.2.4

scripts/release.sh

@@ -9,7 +9,7 @@ fi
 version="$1"
 tag="v${version}"
 
-if ! git diff --quiet || ! git diff --cached --quiet; then
+if [[ -n "$(git status --porcelain)" ]]; then
   echo "Refusing to release with uncommitted changes." >&2
   exit 1
 fi

src/long_long_spin_box.cpp

@@ -0,0 +1,130 @@
+#include "long_long_spin_box.h"
+
+#include <QLineEdit>
+
+#include <algorithm>
+
+LongLongSpinBox::LongLongSpinBox(QWidget *parent) : QAbstractSpinBox(parent)
+{
+    setValue(0);
+    connect(this, &QAbstractSpinBox::editingFinished, this, &LongLongSpinBox::commitText);
+}
+
+qint64 LongLongSpinBox::value() const
+{
+    qint64 parsed = value_;
+    return valueFromText(lineEdit()->text(), parsed) ? parsed : value_;
+}
+
+void LongLongSpinBox::setValue(qint64 value)
+{
+    value_ = std::clamp(value, minimum_, maximum_);
+    lineEdit()->setText(textFromValue(value_));
+}
+
+void LongLongSpinBox::setRange(qint64 minimum, qint64 maximum)
+{
+    minimum_ = minimum;
+    maximum_ = std::max(minimum, maximum);
+    setValue(value_);
+}
+
+void LongLongSpinBox::setSingleStep(qint64 step)
+{
+    singleStep_ = std::max<qint64>(1, step);
+}
+
+void LongLongSpinBox::setSuffix(const QString &suffix)
+{
+    suffix_ = suffix;
+    setValue(value());
+}
+
+void LongLongSpinBox::setSpecialValueText(const QString &text)
+{
+    specialValueText_ = text;
+    setValue(value());
+}
+
+QValidator::State LongLongSpinBox::validate(QString &input, int &position) const
+{
+    Q_UNUSED(position);
+    if (!specialValueText_.isEmpty() && input == specialValueText_)
+        return QValidator::Acceptable;
+
+    QString number = input;
+    if (!suffix_.isEmpty() && number.endsWith(suffix_))
+        number.chop(suffix_.size());
+    number = number.trimmed();
+    if (number.isEmpty() || number == QStringLiteral("-"))
+        return QValidator::Intermediate;
+
+    qint64 parsed = 0;
+    if (!valueFromText(input, parsed))
+        return QValidator::Invalid;
+    return parsed >= minimum_ && parsed <= maximum_
+        ? QValidator::Acceptable : QValidator::Invalid;
+}
+
+void LongLongSpinBox::fixup(QString &input) const
+{
+    qint64 parsed = value_;
+    input = valueFromText(input, parsed)
+        ? textFromValue(std::clamp(parsed, minimum_, maximum_))
+        : textFromValue(value_);
+}
+
+void LongLongSpinBox::stepBy(int steps)
+{
+    commitText();
+    qint64 next = value_;
+    if (steps > 0) {
+        const qint64 count = steps;
+        next = singleStep_ > (maximum_ - value_) / count
+            ? maximum_ : value_ + singleStep_ * count;
+    } else if (steps < 0) {
+        const qint64 count = -qint64(steps);
+        next = singleStep_ > (value_ - minimum_) / count
+            ? minimum_ : value_ - singleStep_ * count;
+    }
+    setValue(next);
+}
+
+QAbstractSpinBox::StepEnabled LongLongSpinBox::stepEnabled() const
+{
+    StepEnabled enabled = StepNone;
+    const qint64 current = value();
+    if (current > minimum_)
+        enabled |= StepDownEnabled;
+    if (current < maximum_)
+        enabled |= StepUpEnabled;
+    return enabled;
+}
+
+QString LongLongSpinBox::textFromValue(qint64 value) const
+{
+    if (value == minimum_ && !specialValueText_.isEmpty())
+        return specialValueText_;
+    return QString::number(value) + suffix_;
+}
+
+bool LongLongSpinBox::valueFromText(const QString &text, qint64 &value) const
+{
+    if (!specialValueText_.isEmpty() && text == specialValueText_) {
+        value = minimum_;
+        return true;
+    }
+    QString number = text;
+    if (!suffix_.isEmpty() && number.endsWith(suffix_))
+        number.chop(suffix_.size());
+    bool ok = false;
+    const qint64 parsed = number.trimmed().toLongLong(&ok);
+    if (ok)
+        value = parsed;
+    return ok;
+}
+
+void LongLongSpinBox::commitText()
+{
+    setValue(value());
+}

src/long_long_spin_box.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <QAbstractSpinBox>
+#include <QValidator>
+
+#include <limits>
+
+class LongLongSpinBox final : public QAbstractSpinBox {
+public:
+    explicit LongLongSpinBox(QWidget *parent = nullptr);
+
+    qint64 value() const;
+    void setValue(qint64 value);
+    void setRange(qint64 minimum, qint64 maximum);
+    void setSingleStep(qint64 step);
+    void setSuffix(const QString &suffix);
+    void setSpecialValueText(const QString &text);
+
+protected:
+    QValidator::State validate(QString &input, int &position) const override;
+    void fixup(QString &input) const override;
+    void stepBy(int steps) override;
+    StepEnabled stepEnabled() const override;
+
+private:
+    QString textFromValue(qint64 value) const;
+    bool valueFromText(const QString &text, qint64 &value) const;
+    void commitText();
+
+    qint64 minimum_ = 0;
+    qint64 maximum_ = std::numeric_limits<qint64>::max();
+    qint64 value_ = 0;
+    qint64 singleStep_ = 1;
+    QString suffix_;
+    QString specialValueText_;
+};

src/search_core.cpp

@@ -0,0 +1,202 @@
+#include "search_core.h"
+
+#include <QCryptographicHash>
+#include <QDateTime>
+#include <QFile>
+#include <QRegularExpression>
+
+#include <algorithm>
+#include <pwd.h>
+
+QStringList patterns(const QString &text)
+{
+    QStringList out;
+    QString item;
+    bool quoted = false;
+    for (QChar ch : text) {
+        if (ch == u'"') {
+            quoted = !quoted;
+        } else if (!quoted && (ch == u';' || ch == u',')) {
+            if (!item.trimmed().isEmpty())
+                out.push_back(item.trimmed());
+            item.clear();
+        } else {
+            item += ch;
+        }
+    }
+    if (!item.trimmed().isEmpty())
+        out.push_back(item.trimmed());
+    return out;
+}
+
+QStringList exclusionPatterns(const QString &text)
+{
+    QString normalized = text;
+    normalized.replace(QRegularExpression(QStringLiteral("\\s+")), QStringLiteral(";"));
+    QStringList result = patterns(normalized);
+    for (QString &pattern : result) {
+        if (!pattern.contains(u'*') && !pattern.contains(u'?') && !pattern.contains(u'/'))
+            pattern = QStringLiteral("*.") + pattern.remove(QRegularExpression(QStringLiteral("^\\.")));
+    }
+    return result;
+}
+
+bool wildcardMatch(const QString &value, const QStringList &items, Qt::CaseSensitivity cs)
+{
+    for (const QString &pattern : items) {
+        const auto regex = QRegularExpression(
+            QRegularExpression::wildcardToRegularExpression(pattern),
+            cs == Qt::CaseInsensitive ? QRegularExpression::CaseInsensitiveOption
+                                      : QRegularExpression::NoPatternOption);
+        if (regex.match(value).hasMatch())
+            return true;
+    }
+    return false;
+}
+
+bool shouldShowDuplicateResult(bool copiesOnly, int keeperPriority)
+{
+    if (keeperPriority < 1)
+        return false;
+    return !copiesOnly || keeperPriority > 1;
+}
+
+QString humanSize(qint64 bytes)
+{
+    static const QStringList units{QStringLiteral("B"), QStringLiteral("KB"),
+                                   QStringLiteral("MB"), QStringLiteral("GB"),
+                                   QStringLiteral("TB")};
+    double value = static_cast<double>(bytes);
+    int unit = 0;
+    while (value >= 1024.0 && unit < units.size() - 1) {
+        value /= 1024.0;
+        ++unit;
+    }
+    return unit == 0 ? QStringLiteral("%1 B").arg(bytes)
+                     : QStringLiteral("%1 %2").arg(value, 0, 'f', 2).arg(units[unit]);
+}
+
+QString ownerName(uid_t uid)
+{
+    struct passwd pwd {};
+    struct passwd *result = nullptr;
+    QByteArray buffer(16384, Qt::Uninitialized);
+    if (getpwuid_r(uid, &pwd, buffer.data(), static_cast<size_t>(buffer.size()), &result) == 0 && result)
+        return QString::fromLocal8Bit(result->pw_name);
+    return QString::number(uid);
+}
+
+std::optional<QByteArray> hexNeedle(QString text)
+{
+    text.remove(QRegularExpression(QStringLiteral("\\s+")));
+    if (text.size() % 2 != 0 || !QRegularExpression(QStringLiteral("^[0-9a-fA-F]*$")).match(text).hasMatch())
+        return std::nullopt;
+    return QByteArray::fromHex(text.toLatin1());
+}
+
+namespace {
+bool isCancelled(const std::atomic_bool *cancelled)
+{
+    return cancelled && cancelled->load(std::memory_order_relaxed);
+}
+}
+
+bool fileContains(const QString &path, const SearchOptions &options,
+                  const std::atomic_bool *cancelled)
+{
+    if (isCancelled(cancelled))
+        return false;
+    if (options.contains.isEmpty())
+        return true;
+
+    const QStringList terms = options.multipleValues
+        ? patterns(options.contains) : QStringList{options.contains};
+    QList<QByteArray> needles;
+    for (const QString &term : terms) {
+        if (options.binary) {
+            const auto bytes = hexNeedle(term);
+            if (!bytes)
+                return false;
+            needles.push_back(*bytes);
+        } else {
+            needles.push_back(term.toUtf8());
+        }
+    }
+    if (needles.isEmpty())
+        return true;
+
+    QFile file(path);
+    if (!file.open(QIODevice::ReadOnly))
+        return false;
+
+    QVector<bool> found(needles.size(), false);
+    qsizetype overlap = 1;
+    for (const QByteArray &needle : needles)
+        overlap = std::max(overlap, needle.size());
+    QByteArray tail;
+    while (!file.atEnd() && !isCancelled(cancelled)) {
+        QByteArray data = tail + file.read(1024 * 1024);
+        if (!options.caseSensitive && !options.binary)
+            data = data.toLower();
+        for (qsizetype i = 0; i < needles.size(); ++i) {
+            QByteArray needle = needles[i];
+            if (!options.caseSensitive && !options.binary)
+                needle = needle.toLower();
+            if (!found[i] && data.contains(needle))
+                found[i] = true;
+        }
+        const bool matched = options.multipleAnd
+            ? std::all_of(found.cbegin(), found.cend(), [](bool foundTerm) { return foundTerm; })
+            : std::any_of(found.cbegin(), found.cend(), [](bool foundTerm) { return foundTerm; });
+        if (matched)
+            return true;
+        tail = data.right(overlap - 1);
+    }
+    return false;
+}
+
+bool filesEqual(const QString &leftPath, const QString &rightPath,
+                const std::atomic_bool *cancelled)
+{
+    if (isCancelled(cancelled))
+        return false;
+    QFile left(leftPath);
+    QFile right(rightPath);
+    if (!left.open(QIODevice::ReadOnly) || !right.open(QIODevice::ReadOnly)
+        || left.size() != right.size())
+        return false;
+    while (!left.atEnd() && !isCancelled(cancelled)) {
+        const QByteArray leftData = left.read(1024 * 1024);
+        const QByteArray rightData = right.read(leftData.size());
+        if (leftData != rightData)
+            return false;
+    }
+    return !isCancelled(cancelled) && right.atEnd();
+}
+
+QByteArray sha256(const QString &path, const std::atomic_bool *cancelled)
+{
+    if (isCancelled(cancelled))
+        return {};
+    QFile file(path);
+    if (!file.open(QIODevice::ReadOnly))
+        return {};
+    QCryptographicHash hash(QCryptographicHash::Sha256);
+    while (!file.atEnd() && !isCancelled(cancelled))
+        hash.addData(file.read(1024 * 1024));
+    return isCancelled(cancelled) ? QByteArray{} : hash.result();
+}
+
+bool parseOptionalIsoDate(const QString &text, qint64 &seconds)
+{
+    const QString trimmed = text.trimmed();
+    if (trimmed.isEmpty()) {
+        seconds = 0;
+        return true;
+    }
+    const QDateTime parsed = QDateTime::fromString(trimmed, Qt::ISODate);
+    if (!parsed.isValid())
+        return false;
+    seconds = parsed.toSecsSinceEpoch();
+    return true;
+}

src/search_core.h

@@ -0,0 +1,86 @@
+#pragma once
+
+#include <QByteArray>
+#include <QDir>
+#include <QMetaType>
+#include <QString>
+#include <QStringList>
+#include <QVector>
+
+#include <atomic>
+#include <optional>
+#include <sys/types.h>
+
+struct SearchOptions {
+    QString roots = QDir::homePath();
+    QString fileWildcards = QStringLiteral("*");
+    QString subfolderWildcards = QStringLiteral("*");
+    QString excludeFiles;
+    QString excludeFolders;
+    QString includeFolders;
+    QString contains;
+    bool binary = false;
+    bool multipleValues = false;
+    bool multipleAnd = false;
+    bool caseSensitive = false;
+    qint64 minSize = 0;
+    qint64 maxSize = 0;
+    qint64 minTime = 0;
+    qint64 maxTime = 0;
+    QString timeField = QStringLiteral("Modified time");
+    int lastMinutes = 0;
+    bool recursive = true;
+    bool findFiles = true;
+    bool findFolders = false;
+    bool followLinks = false;
+    bool retrieveOwner = false;
+    bool accurateProgress = true;
+    bool useCache = true;
+    int maxDepth = 0;
+    int maxResults = 0;
+    QString mode = QStringLiteral("Standard search");
+    QString duplicateNameMode = QStringLiteral("All files and folders");
+    bool duplicateNameWithoutExtension = false;
+    bool showDuplicateCopiesOnly = true;
+    bool includeSubfoldersInSummary = false;
+    QString hidden = QStringLiteral("Any");
+    QString readonly = QStringLiteral("Any");
+    QString executable = QStringLiteral("Any");
+
+    bool operator==(const SearchOptions &) const = default;
+};
+
+struct FileRecord {
+    QString path;
+    QString name;
+    QString folder;
+    qint64 size = 0;
+    qint64 sizeOnDisk = 0;
+    qint64 modified = 0;
+    qint64 created = 0;
+    qint64 accessed = 0;
+    qint64 changed = 0;
+    QString type;
+    QString owner;
+    QString attributes;
+    int group = 0;
+    int duplicateCopy = 0;
+};
+
+Q_DECLARE_METATYPE(SearchOptions)
+Q_DECLARE_METATYPE(FileRecord)
+Q_DECLARE_METATYPE(QVector<FileRecord>)
+
+QStringList patterns(const QString &text);
+QStringList exclusionPatterns(const QString &text);
+bool wildcardMatch(const QString &value, const QStringList &items, Qt::CaseSensitivity cs);
+QString humanSize(qint64 bytes);
+QString ownerName(uid_t uid);
+std::optional<QByteArray> hexNeedle(QString text);
+bool fileContains(const QString &path, const SearchOptions &options,
+                  const std::atomic_bool *cancelled = nullptr);
+bool filesEqual(const QString &leftPath, const QString &rightPath,
+                const std::atomic_bool *cancelled = nullptr);
+QByteArray sha256(const QString &path, const std::atomic_bool *cancelled = nullptr);
+bool parseOptionalIsoDate(const QString &text, qint64 &seconds);
+bool shouldShowDuplicateResult(bool copiesOnly, int keeperPriority);

tests/long_long_spin_box_test.cpp

@@ -0,0 +1,40 @@
+#include "long_long_spin_box.h"
+
+#include <QLineEdit>
+#include <QtTest>
+
+class LongLongSpinBoxTest final : public QObject {
+    Q_OBJECT
+
+private slots:
+    void preservesValuesAboveTwoGigabytes()
+    {
+        LongLongSpinBox spin;
+        spin.setRange(0, std::numeric_limits<qint64>::max());
+        spin.setSuffix(QStringLiteral(" bytes"));
+        spin.setValue(5'000'000'000);
+        QCOMPARE(spin.value(), qint64(5'000'000'000));
+        QCOMPARE(spin.findChild<QLineEdit *>()->text(), QStringLiteral("5000000000 bytes"));
+        spin.stepUp();
+        QCOMPARE(spin.value(), qint64(5'000'000'001));
+
+        spin.findChild<QLineEdit *>()->setText(QStringLiteral("6000000000 bytes"));
+        QVERIFY(QMetaObject::invokeMethod(&spin, "editingFinished", Qt::DirectConnection));
+        QCOMPARE(spin.value(), qint64(6'000'000'000));
+    }
+
+    void clampsAtRangeEdges()
+    {
+        LongLongSpinBox spin;
+        spin.setRange(0, 10);
+        spin.setValue(10);
+        spin.stepUp();
+        QCOMPARE(spin.value(), qint64(10));
+        spin.setValue(-50);
+        QCOMPARE(spin.value(), qint64(0));
+    }
+};
+
+QTEST_MAIN(LongLongSpinBoxTest)
+
+#include "long_long_spin_box_test.moc"

tests/release_dirty_test.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+release_script="$(realpath "$1")"
+test_directory="$(mktemp -d)"
+trap 'rm -rf "$test_directory"' EXIT
+
+git -C "$test_directory" init -q
+git -C "$test_directory" config user.name "FolderScope Tests"
+git -C "$test_directory" config user.email "tests@folderscope.invalid"
+printf '9.9.9\n' > "$test_directory/VERSION"
+printf '# Changelog\n\n## [9.9.9]\n' > "$test_directory/CHANGELOG.md"
+git -C "$test_directory" add VERSION CHANGELOG.md
+git -C "$test_directory" commit -q -m "test fixture"
+touch "$test_directory/untracked"
+
+if (cd "$test_directory" && "$release_script" 9.9.9 >/dev/null 2>&1); then
+    echo "release.sh accepted a repository with untracked files" >&2
+    exit 1
+fi

tests/search_core_test.cpp

@@ -0,0 +1,115 @@
+#include "search_core.h"
+
+#include <QCryptographicHash>
+#include <QFile>
+#include <QTemporaryDir>
+#include <QtTest>
+
+class SearchCoreTest final : public QObject {
+    Q_OBJECT
+
+private slots:
+    void parsesPatternsAndExclusions()
+    {
+        QCOMPARE(patterns(QStringLiteral("/a; \"/b,with-comma\" , /c")),
+                 QStringList({QStringLiteral("/a"), QStringLiteral("/b,with-comma"),
+                              QStringLiteral("/c")}));
+        QCOMPARE(exclusionPatterns(QStringLiteral("tmp log *.bak")),
+                 QStringList({QStringLiteral("*.tmp"), QStringLiteral("*.log"),
+                              QStringLiteral("*.bak")}));
+        QVERIFY(wildcardMatch(QStringLiteral("Report.TXT"), {QStringLiteral("*.txt")},
+                              Qt::CaseInsensitive));
+        QVERIFY(!wildcardMatch(QStringLiteral("Report.TXT"), {QStringLiteral("*.txt")},
+                               Qt::CaseSensitive));
+    }
+
+    void parsesOptionalIsoDates()
+    {
+        qint64 seconds = -1;
+        QVERIFY(parseOptionalIsoDate(QString{}, seconds));
+        QCOMPARE(seconds, 0);
+        QVERIFY(parseOptionalIsoDate(QStringLiteral("2026-07-25T20:30:00"), seconds));
+        QVERIFY(seconds > 0);
+        QVERIFY(!parseOptionalIsoDate(QStringLiteral("2026-not-a-date"), seconds));
+    }
+
+    void selectsDuplicateRowsForDisplay()
+    {
+        QVERIFY(!shouldShowDuplicateResult(true, 0));
+        QVERIFY(!shouldShowDuplicateResult(true, 1));
+        QVERIFY(shouldShowDuplicateResult(true, 2));
+
+        QVERIFY(!shouldShowDuplicateResult(false, 0));
+        QVERIFY(shouldShowDuplicateResult(false, 1));
+        QVERIFY(shouldShowDuplicateResult(false, 2));
+    }
+
+    void searchesContentsAndHashes()
+    {
+        QTemporaryDir directory;
+        QVERIFY(directory.isValid());
+        const QString firstPath = directory.filePath(QStringLiteral("first.bin"));
+        const QString secondPath = directory.filePath(QStringLiteral("second.bin"));
+        const QString differentPath = directory.filePath(QStringLiteral("different.bin"));
+        const QByteArray content = QByteArray(1024 * 1024 - 2, 'x')
+            + QByteArray("Alpha needle BETA");
+
+        QFile first(firstPath);
+        QVERIFY(first.open(QIODevice::WriteOnly));
+        QCOMPARE(first.write(content), content.size());
+        first.close();
+
+        QFile second(secondPath);
+        QVERIFY(second.open(QIODevice::WriteOnly));
+        QCOMPARE(second.write(content), content.size());
+        second.close();
+
+        QFile different(differentPath);
+        QVERIFY(different.open(QIODevice::WriteOnly));
+        QCOMPARE(different.write("different"), qint64(9));
+        different.close();
+
+        SearchOptions options;
+        options.contains = QStringLiteral("needle");
+        QVERIFY(fileContains(firstPath, options));
+        options.contains = QStringLiteral("alpha,beta");
+        options.multipleValues = true;
+        options.multipleAnd = true;
+        QVERIFY(fileContains(firstPath, options));
+        options.caseSensitive = true;
+        QVERIFY(!fileContains(firstPath, options));
+        options.binary = true;
+        options.multipleValues = false;
+        options.multipleAnd = false;
+        options.contains = QStringLiteral("41 6c 70 68 61");
+        QVERIFY(fileContains(firstPath, options));
+        options.contains = QStringLiteral("ABC");
+        QVERIFY(!fileContains(firstPath, options));
+
+        QVERIFY(filesEqual(firstPath, secondPath));
+        QVERIFY(!filesEqual(firstPath, differentPath));
+        QCOMPARE(sha256(firstPath), QCryptographicHash::hash(content, QCryptographicHash::Sha256));
+    }
+
+    void cancelsFileOperations()
+    {
+        QTemporaryDir directory;
+        QVERIFY(directory.isValid());
+        const QString path = directory.filePath(QStringLiteral("file.bin"));
+        QFile file(path);
+        QVERIFY(file.open(QIODevice::WriteOnly));
+        QCOMPARE(file.write("needle"), qint64(6));
+        file.close();
+
+        std::atomic_bool cancelled = true;
+        SearchOptions options;
+        options.contains = QStringLiteral("needle");
+        QVERIFY(!fileContains(path, options, &cancelled));
+        QVERIFY(!filesEqual(path, path, &cancelled));
+        QVERIFY(sha256(path, &cancelled).isEmpty());
+    }
+};
+
+QTEST_GUILESS_MAIN(SearchCoreTest)
+
+#include "search_core_test.moc"