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/** @file testSelection.cxx
** Unit Tests for Scintilla internal data structures
**/
#include <cstdint>
#include <stdexcept>
#include <string_view>
#include <vector>
#include "Debugging.h"
#include "Position.h"
#include "Selection.h"
#include "catch.hpp"
using namespace Scintilla;
using namespace Scintilla::Internal;
// Test Selection.
namespace {
constexpr SelectionPosition invalid;
constexpr SelectionPosition zero(0);
constexpr SelectionRange rangeInvalid;
constexpr SelectionRange rangeZero(0);
}
TEST_CASE("SelectionPosition") {
SECTION("SelectionPosition") {
SelectionPosition sel;
REQUIRE(sel.Position() == Sci::invalidPosition);
REQUIRE(sel.VirtualSpace() == 0);
REQUIRE(!sel.IsValid());
REQUIRE(sel.VirtualSpace() == 0);
REQUIRE(sel == invalid);
REQUIRE(sel != zero);
sel.Reset();
REQUIRE(sel != invalid);
REQUIRE(sel == zero);
}
SECTION("Comparison") {
constexpr SelectionPosition sel(2,3);
REQUIRE(sel > invalid);
REQUIRE(sel > zero);
REQUIRE(sel >= zero);
REQUIRE(zero < sel);
REQUIRE(zero <= sel);
SelectionPosition virtuous(0, 4);
REQUIRE(virtuous > zero);
REQUIRE(virtuous >= zero);
REQUIRE(zero < virtuous);
REQUIRE(zero <= virtuous);
REQUIRE(virtuous.Position() == 0);
REQUIRE(virtuous.VirtualSpace() == 4);
virtuous.SetPosition(1); // Also resets virtualSpace
REQUIRE(virtuous.Position() == 1);
REQUIRE(virtuous.VirtualSpace() == 0);
virtuous.SetVirtualSpace(3); // Does not reset position
REQUIRE(virtuous.Position() == 1);
REQUIRE(virtuous.VirtualSpace() == 3);
}
SECTION("Add") {
SelectionPosition sel(2,3);
sel.Add(1);
REQUIRE(sel.Position() == 3);
REQUIRE(sel.VirtualSpace() == 3);
sel.AddVirtualSpace(2);
REQUIRE(sel.Position() == 3);
REQUIRE(sel.VirtualSpace() == 5);
}
SECTION("MoveForInsertDelete") {
// There are multiple details implemented in MoveForInsertDelete that are supposed to
// move selections in a way that appears to be natural to a user.
SelectionPosition sel(2,3);
sel.MoveForInsertDelete(true, 0,1, false);
REQUIRE(sel == SelectionPosition(3,3));
// Converts a virtual space to real space
sel.MoveForInsertDelete(true, 3,1, false);
REQUIRE(sel == SelectionPosition(4,2));
// Deletion at position clears virtual space
sel.MoveForInsertDelete(false, 4,1, false);
REQUIRE(sel == SelectionPosition(4,0));
sel.MoveForInsertDelete(false, 3,1, false);
REQUIRE(sel == SelectionPosition(3,0));
// Insert at position with and without move for equal
sel.MoveForInsertDelete(true, 3, 1, false);
REQUIRE(sel == SelectionPosition(3, 0));
sel.MoveForInsertDelete(true, 3, 1, true);
REQUIRE(sel == SelectionPosition(4, 0));
// Deletion over the position moves to start of deletion
sel.MoveForInsertDelete(false, 2, 5, false);
REQUIRE(sel == SelectionPosition(2, 0));
}
SECTION("Serialization") {
// Conversion to/from string form
const std::string invalidString(invalid.ToString());
REQUIRE(invalidString == "-1");
const SelectionPosition invalidReturned(invalidString);
REQUIRE(invalidReturned == invalid);
const std::string zeroString(zero.ToString());
REQUIRE(zeroString == "0");
const SelectionPosition zeroReturned(zeroString);
REQUIRE(zeroReturned == zero);
const SelectionPosition virtue(2, 3);
const std::string virtueString(virtue.ToString());
REQUIRE(virtueString == "2v3");
const SelectionPosition virtueReturned(virtueString);
REQUIRE(virtueReturned == virtue);
}
}
TEST_CASE("SelectionSegment") {
SECTION("SelectionSegment") {
const SelectionSegment ss;
REQUIRE(ss.start == invalid);
REQUIRE(ss.end == invalid);
}
}
TEST_CASE("SelectionRange") {
SECTION("SelectionRange") {
const SelectionRange sr;
REQUIRE(sr.anchor == invalid);
REQUIRE(sr.caret == invalid);
}
SECTION("Serialization") {
// Conversion to/from string form
// Range from 1 to 2 with 3 virtual spaces
const SelectionRange range123(SelectionPosition(2, 3), SelectionPosition(1));
const std::string range123String(range123.ToString());
// Opposite order to constructor: from anchor to caret
REQUIRE(range123String == "1-2v3");
const SelectionRange range123Returned(range123String);
REQUIRE(range123Returned == range123);
}
SECTION("Intersect") {
constexpr SelectionSegment segmentEmpty;
// Range from 1 to 2 with 3 virtual spaces
const SelectionRange range123(SelectionPosition(2, 3), SelectionPosition(1));
const SelectionSegment segment12(1, 2);
const SelectionSegment inside = range123.Intersect(segment12);
REQUIRE(inside == segment12);
const SelectionSegment segment121(SelectionPosition(1), SelectionPosition(2, 1));
const SelectionSegment withVirtual = range123.Intersect(segment121);
REQUIRE(withVirtual == segment121);
const SelectionSegment segment052(SelectionPosition(0), SelectionPosition(5, 2));
const SelectionSegment internal = range123.Intersect(segment052); // All inside
REQUIRE(internal == range123.AsSegment());
const SelectionSegment wayOut(SelectionPosition(100), SelectionPosition(105, 2));
const SelectionSegment nothing = range123.Intersect(wayOut);
REQUIRE(nothing == segmentEmpty);
const SelectionSegment edge(1, 1);
const SelectionSegment nowt = range123.Intersect(edge);
REQUIRE(nowt == edge);
// (0, 1) and (1, 2v3) touch so intersection is a single position.
const SelectionSegment front(0, 1);
const SelectionSegment single(1, 1);
const SelectionSegment thin = range123.Intersect(front);
REQUIRE(thin == single);
}
}
TEST_CASE("Selection") {
SECTION("Selection") {
Selection sel;
REQUIRE(sel.selType == Selection::SelTypes::stream);
REQUIRE(!sel.IsRectangular());
REQUIRE(sel.Count() == 1);
REQUIRE(sel.Main() == 0);
REQUIRE(sel.Range(0) == rangeZero);
REQUIRE(sel.RangeMain() == rangeZero);
REQUIRE(sel.Rectangular() == rangeInvalid);
REQUIRE(sel.Empty());
}
SECTION("Serialization") {
// Conversion to/from string form
// Range from 5 with 3 virtual spaces to 2
const SelectionRange range532(SelectionPosition(2), SelectionPosition(5, 3));
Selection selection;
selection.SetSelection(range532);
const std::string selectionString(selection.ToString());
// Opposite order to constructor: from anchor to caret
REQUIRE(selectionString == "5v3-2");
const SelectionRange selectionReturned(selectionString);
REQUIRE(selection.selType == Selection::SelTypes::stream);
REQUIRE(!selection.IsRectangular());
REQUIRE(selection.Count() == 1);
REQUIRE(selection.Main() == 0);
REQUIRE(selection.Range(0) == range532);
REQUIRE(selection.RangeMain() == range532);
REQUIRE(selection.Rectangular() == rangeInvalid);
REQUIRE(!selection.Empty());
}
SECTION("SerializationMultiple") {
// Conversion to/from string form
// Range from 5 with 3 virtual spaces to 2
const SelectionRange range532(SelectionPosition(2), SelectionPosition(5, 3));
const SelectionRange range1(SelectionPosition(1));
Selection selection;
selection.SetSelection(range532);
selection.AddSelection(range1);
selection.SetMain(1);
const std::string selectionString(selection.ToString());
REQUIRE(selectionString == "5v3-2,1#1");
const SelectionRange selectionReturned(selectionString);
REQUIRE(selection.selType == Selection::SelTypes::stream);
REQUIRE(!selection.IsRectangular());
REQUIRE(selection.Count() == 2);
REQUIRE(selection.Main() == 1);
REQUIRE(selection.Range(0) == range532);
REQUIRE(selection.Range(1) == range1);
REQUIRE(selection.RangeMain() == range1);
REQUIRE(selection.Rectangular() == rangeInvalid);
REQUIRE(!selection.Empty());
}
SECTION("SerializationRectangular") {
// Conversion to/from string form
// Range from 5 with 3 virtual spaces to 2
const SelectionRange range532(SelectionPosition(2), SelectionPosition(5, 3));
// Create a single-line rectangular selection
Selection selection;
selection.selType = Selection::SelTypes::rectangle;
selection.Rectangular() = range532;
// Set arbitrary realized range - inside editor ranges would be calculated from line layout
selection.SetSelection(rangeZero);
const std::string selectionString(selection.ToString());
REQUIRE(selectionString == "R5v3-2");
const Selection selectionReturned(selectionString);
REQUIRE(selection.selType == Selection::SelTypes::rectangle);
REQUIRE(selection.IsRectangular());
REQUIRE(selection.Count() == 1);
REQUIRE(selection.Main() == 0);
REQUIRE(selection.Range(0) == rangeZero);
REQUIRE(selection.RangeMain() == rangeZero);
REQUIRE(selection.Rectangular() == range532);
selection.selType = Selection::SelTypes::thin;
const std::string thinString(selection.ToString());
REQUIRE(thinString == "T5v3-2");
}
}
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