using System;
using UnitTestSharp;

namespace Clave.UnitTests
{
    public class ShortcutTextTests : TestFixture
    {
        public class NameOfTests : TestFixture
        {
            public void BothCtrlsAreCtrl()
            {
                CheckEqual("Ctrl", ShortcutText.NameOf(KeyCode.ControlLeft));
                CheckEqual("Ctrl", ShortcutText.NameOf(KeyCode.ControlRight));
            }

            public void ArrowsDropTheirPrefix()
            {
                CheckEqual("Left", ShortcutText.NameOf(KeyCode.ArrowLeft));
            }

            public void TopRowDigitIsItsNumber()
            {
                CheckEqual("7", ShortcutText.NameOf(KeyCode.Digit7));
            }

            public void PunctuationIsItsCharacter()
            {
                CheckEqual("[", ShortcutText.NameOf(KeyCode.BracketLeft));
            }

            public void AKeyWithNoSpecialNameIsItsCodeName()
            {
                CheckEqual("F2", ShortcutText.NameOf(KeyCode.F2));
            }

            public void TwoWordKeysHaveASpace()
            {
                CheckEqual("Page Down", ShortcutText.NameOf(KeyCode.PageDown));
            }
        }

        public class OfChordTests : TestFixture
        {
            public void ALoneKey_IsItsName()
            {
                CheckEqual("F2", ShortcutText.Of(Chord.Press(KeyCode.F2)));
            }

            public void AKeyWithAModifier_NamesTheModifierFirst()
            {
                CheckEqual("Ctrl+Z", ShortcutText.Of(Chord.Press(KeyCode.Z).WithAnyHeld(KeyState.Control)));
            }

            public void AltWithAnArrow_NamesBoth()
            {
                CheckEqual("Alt+Left", ShortcutText.Of(Chord.Press(KeyCode.ArrowLeft).WithAnyHeld(KeyState.Alt)));
            }

            public void ARepeatingKey_IsItsName()
            {
                CheckEqual("Home", ShortcutText.Of(Chord.Repeat(KeyCode.Home)));
            }

            public void ANullChord_Throws()
            {
                CheckThrow(typeof(ArgumentNullException));
                ShortcutText.Of((Chord)null);
            }
        }

        public class OfChordSetTests : TestFixture
        {
            public void AnEmptySet_IsNull()
            {
                CheckNull(ShortcutText.Of(ChordSet.Empty));
            }

            public void TheShortestTextWins()
            {
                ChordSet set = ChordSet.Of(Chord.Press(KeyCode.NumpadEnter), Chord.Press(KeyCode.MainEnter));

                CheckEqual("Enter", ShortcutText.Of(set));
            }

            public void ADisabledChordIsLeftOut()
            {
                var builder = new ChordSetBuilder();
                Chord disabled = builder.Add(Chord.Press(KeyCode.F2));
                builder.Add(Chord.Press(KeyCode.F10));
                builder.SetEnabled(disabled, false);

                CheckEqual("F10", ShortcutText.Of(new ChordSet(builder)));
            }

            public void ANullSet_Throws()
            {
                CheckThrow(typeof(ArgumentNullException));
                ShortcutText.Of((ChordSet)null);
            }
        }
    }
}