using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using CliFx.Domain;
using CliFx.Exceptions;
using CliFx.Tests.TestCommands;
using CliFx.Tests.TestCustomTypes;
using FluentAssertions;
using NUnit.Framework;

namespace CliFx.Tests.Domain
{
    [TestFixture]
    internal partial class ApplicationSchemaTests
    {
        private static IEnumerable<TestCaseData> GetTestCases_Resolve()
        {
            yield return new TestCaseData(
                new[]
                {
                    typeof(DivideCommand),
                    typeof(ConcatCommand),
                    typeof(EnvironmentVariableCommand)
                },
                new[]
                {
                    new CommandSchema(typeof(DivideCommand), "div", "Divide one number by another.",
                        new CommandParameterSchema[0], new[]
                        {
                            new CommandOptionSchema(typeof(DivideCommand).GetProperty(nameof(DivideCommand.Dividend)),
                                "dividend", 'D', null, true, "The number to divide."),
                            new CommandOptionSchema(typeof(DivideCommand).GetProperty(nameof(DivideCommand.Divisor)),
                                "divisor", 'd', null, true, "The number to divide by.")
                        }),
                    new CommandSchema(typeof(ConcatCommand), "concat", "Concatenate strings.",
                        new CommandParameterSchema[0],
                        new[]
                        {
                            new CommandOptionSchema(typeof(ConcatCommand).GetProperty(nameof(ConcatCommand.Inputs)),
                                null, 'i', null, true, "Input strings."),
                            new CommandOptionSchema(typeof(ConcatCommand).GetProperty(nameof(ConcatCommand.Separator)),
                                null, 's', null, false, "String separator.")
                        }),
                    new CommandSchema(typeof(EnvironmentVariableCommand), null, "Reads option values from environment variables.",
                        new CommandParameterSchema[0],
                        new[]
                        {
                            new CommandOptionSchema(typeof(EnvironmentVariableCommand).GetProperty(nameof(EnvironmentVariableCommand.Option)),
                                "opt", null, "ENV_SINGLE_VALUE", false, null)
                        }
                    )
                }
            );

            yield return new TestCaseData(
                new[] {typeof(SimpleParameterCommand)},
                new[]
                {
                    new CommandSchema(typeof(SimpleParameterCommand), "param cmd2", "Command using positional parameters",
                        new[]
                        {
                            new CommandParameterSchema(typeof(SimpleParameterCommand).GetProperty(nameof(SimpleParameterCommand.ParameterA)),
                                0, "first", null),
                            new CommandParameterSchema(typeof(SimpleParameterCommand).GetProperty(nameof(SimpleParameterCommand.ParameterB)),
                                10, null, null)
                        },
                        new[]
                        {
                            new CommandOptionSchema(typeof(SimpleParameterCommand).GetProperty(nameof(SimpleParameterCommand.OptionA)),
                                "option", 'o', null, false, null)
                        })
                }
            );

            yield return new TestCaseData(
                new[] {typeof(HelloWorldDefaultCommand)},
                new[]
                {
                    new CommandSchema(typeof(HelloWorldDefaultCommand), null, null,
                        new CommandParameterSchema[0],
                        new CommandOptionSchema[0])
                }
            );
        }

        private static IEnumerable<TestCaseData> GetTestCases_Resolve_Negative()
        {
            yield return new TestCaseData(new object[]
            {
                new Type[0]
            });

            // Command validation failure

            yield return new TestCaseData(new object[]
            {
                new[] {typeof(NonImplementedCommand)}
            });

            yield return new TestCaseData(new object[]
            {
                // Same name
                new[] {typeof(ExceptionCommand), typeof(CommandExceptionCommand)}
            });

            yield return new TestCaseData(new object[]
            {
                new[] {typeof(NonAnnotatedCommand)}
            });

            // Parameter validation failure

            yield return new TestCaseData(new object[]
            {
                new[] {typeof(DuplicateParameterOrderCommand)}
            });

            yield return new TestCaseData(new object[]
            {
                new[] {typeof(DuplicateParameterNameCommand)}
            });

            yield return new TestCaseData(new object[]
            {
                new[] {typeof(MultipleNonScalarParametersCommand)}
            });

            yield return new TestCaseData(new object[]
            {
                new[] {typeof(NonLastNonScalarParameterCommand)}
            });

            // Option validation failure

            yield return new TestCaseData(new object[]
            {
                new[] {typeof(DuplicateOptionNamesCommand)}
            });

            yield return new TestCaseData(new object[]
            {
                new[] {typeof(DuplicateOptionShortNamesCommand)}
            });

            yield return new TestCaseData(new object[]
            {
                new[] {typeof(DuplicateOptionEnvironmentVariableNamesCommand)}
            });
        }

        [Test]
        [TestCaseSource(nameof(GetTestCases_Resolve))]
        public void Resolve_Test(
            IReadOnlyList<Type> commandTypes,
            IReadOnlyList<CommandSchema> expectedCommandSchemas)
        {
            // Act
            var applicationSchema = ApplicationSchema.Resolve(commandTypes);

            // Assert
            applicationSchema.Commands.Should().BeEquivalentTo(expectedCommandSchemas);
        }

        [Test]
        [TestCaseSource(nameof(GetTestCases_Resolve_Negative))]
        public void Resolve_Negative_Test(IReadOnlyList<Type> commandTypes)
        {
            // Act & Assert
            var ex = Assert.Throws<CliFxException>(() => ApplicationSchema.Resolve(commandTypes));
            Console.WriteLine(ex.Message);
        }
    }

    internal partial class ApplicationSchemaTests
    {
        private static IEnumerable<TestCaseData> GetTestCases_InitializeEntryPoint()
        {
            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Object), "value")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Object = "value"}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.String), "value")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {String = "value"}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Bool), "true")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Bool = true}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Bool), "false")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Bool = false}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Bool))
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Bool = true}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Char), "a")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Char = 'a'}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Sbyte), "15")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Sbyte = 15}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Byte), "15")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Byte = 15}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Short), "15")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Short = 15}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Ushort), "15")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Ushort = 15}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Int), "15")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Int = 15}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Uint), "15")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Uint = 15}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Long), "15")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Long = 15}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Ulong), "15")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Ulong = 15}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Float), "123.45")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Float = 123.45f}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Double), "123.45")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Double = 123.45}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Decimal), "123.45")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Decimal = 123.45m}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.DateTime), "28 Apr 1995")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {DateTime = new DateTime(1995, 04, 28)}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.DateTimeOffset), "28 Apr 1995")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {DateTimeOffset = new DateTime(1995, 04, 28)}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TimeSpan), "00:14:59")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {TimeSpan = new TimeSpan(00, 14, 59)}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TestEnum), "value2")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {TestEnum = TestEnum.Value2}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.IntNullable), "666")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {IntNullable = 666}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.IntNullable))
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {IntNullable = null}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TestEnumNullable), "value3")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {TestEnumNullable = TestEnum.Value3}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TestEnumNullable))
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {TestEnumNullable = null}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TimeSpanNullable), "01:00:00")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {TimeSpanNullable = new TimeSpan(01, 00, 00)}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TimeSpanNullable))
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {TimeSpanNullable = null}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TestStringConstructable), "value")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {TestStringConstructable = new TestStringConstructable("value")}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TestStringParseable), "value")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {TestStringParseable = TestStringParseable.Parse("value")}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TestStringParseableWithFormatProvider), "value")
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand
                {
                    TestStringParseableWithFormatProvider =
                        TestStringParseableWithFormatProvider.Parse("value", CultureInfo.InvariantCulture)
                }
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.ObjectArray), new[] {"value1", "value2"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {ObjectArray = new object[] {"value1", "value2"}}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.StringArray), new[] {"value1", "value2"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {StringArray = new[] {"value1", "value2"}}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.StringArray))
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {StringArray = new string[0]}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.IntArray), new[] {"47", "69"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {IntArray = new[] {47, 69}}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TestEnumArray), new[] {"value1", "value3"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {TestEnumArray = new[] {TestEnum.Value1, TestEnum.Value3}}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.IntNullableArray), new[] {"1337", "2441"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {IntNullableArray = new int?[] {1337, 2441}}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.TestStringConstructableArray), new[] {"value1", "value2"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand
                {
                    TestStringConstructableArray = new[]
                    {
                        new TestStringConstructable("value1"),
                        new TestStringConstructable("value2")
                    }
                }
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.Enumerable), new[] {"value1", "value3"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {Enumerable = new[] {"value1", "value3"}}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.StringEnumerable), new[] {"value1", "value3"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {StringEnumerable = new[] {"value1", "value3"}}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.StringReadOnlyList), new[] {"value1", "value3"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {StringReadOnlyList = new[] {"value1", "value3"}}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.StringList), new[] {"value1", "value3"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {StringList = new List<string> {"value1", "value3"}}
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[]
                    {
                        new CommandOptionInput(nameof(AllSupportedTypesCommand.StringHashSet), new[] {"value1", "value3"})
                    }),
                new Dictionary<string, string>(),
                new AllSupportedTypesCommand {StringHashSet = new HashSet<string> {"value1", "value3"}}
            );

            yield return new TestCaseData(
                new[] {typeof(DivideCommand)},
                new CommandLineInput(
                    new[] {"div"},
                    new[]
                    {
                        new CommandOptionInput("dividend", "13"),
                        new CommandOptionInput("divisor", "8"),
                    }),
                new Dictionary<string, string>(),
                new DivideCommand {Dividend = 13, Divisor = 8}
            );

            yield return new TestCaseData(
                new[] {typeof(DivideCommand)},
                new CommandLineInput(
                    new[] {"div"},
                    new[]
                    {
                        new CommandOptionInput("D", "13"),
                        new CommandOptionInput("d", "8"),
                    }),
                new Dictionary<string, string>(),
                new DivideCommand {Dividend = 13, Divisor = 8}
            );

            yield return new TestCaseData(
                new[] {typeof(DivideCommand)},
                new CommandLineInput(
                    new[] {"div"},
                    new[]
                    {
                        new CommandOptionInput("dividend", "13"),
                        new CommandOptionInput("d", "8"),
                    }),
                new Dictionary<string, string>(),
                new DivideCommand {Dividend = 13, Divisor = 8}
            );

            yield return new TestCaseData(
                new[] {typeof(ConcatCommand)},
                new CommandLineInput(
                    new[] {"concat"},
                    new[] {new CommandOptionInput("i", new[] {"foo", " ", "bar"}),}),
                new Dictionary<string, string>(),
                new ConcatCommand {Inputs = new[] {"foo", " ", "bar"}}
            );

            yield return new TestCaseData(
                new[] {typeof(ConcatCommand)},
                new CommandLineInput(
                    new[] {"concat"},
                    new[]
                    {
                        new CommandOptionInput("i", new[] {"foo", "bar"}),
                        new CommandOptionInput("s", " "),
                    }),
                new Dictionary<string, string>(),
                new ConcatCommand {Inputs = new[] {"foo", "bar"}, Separator = " "}
            );

            yield return new TestCaseData(
                new[] {typeof(EnvironmentVariableCommand)},
                CommandLineInput.Empty,
                new Dictionary<string, string>
                {
                    ["ENV_SINGLE_VALUE"] = "A"
                },
                new EnvironmentVariableCommand {Option = "A"}
            );

            yield return new TestCaseData(
                new[] {typeof(EnvironmentVariableWithMultipleValuesCommand)},
                CommandLineInput.Empty,
                new Dictionary<string, string>
                {
                    ["ENV_MULTIPLE_VALUES"] = string.Join(Path.PathSeparator, "A", "B", "C")
                },
                new EnvironmentVariableWithMultipleValuesCommand {Option = new[] {"A", "B", "C"}}
            );

            yield return new TestCaseData(
                new[] {typeof(EnvironmentVariableCommand)},
                new CommandLineInput(new[] {new CommandOptionInput("opt", "X")}),
                new Dictionary<string, string>
                {
                    ["ENV_SINGLE_VALUE"] = "A"
                },
                new EnvironmentVariableCommand {Option = "X"}
            );

            yield return new TestCaseData(
                new[] {typeof(EnvironmentVariableWithoutCollectionPropertyCommand)},
                CommandLineInput.Empty,
                new Dictionary<string, string>
                {
                    ["ENV_MULTIPLE_VALUES"] = string.Join(Path.PathSeparator, "A", "B", "C")
                },
                new EnvironmentVariableWithoutCollectionPropertyCommand {Option = string.Join(Path.PathSeparator, "A", "B", "C")}
            );

            yield return new TestCaseData(
                new[] {typeof(ParameterCommand)},
                new CommandLineInput(
                    new[] {"param", "cmd", "abc", "123", "1", "2"},
                    new[] {new CommandOptionInput("o", "option value")}),
                new Dictionary<string, string>(),
                new ParameterCommand
                {
                    ParameterA = "abc",
                    ParameterB = 123,
                    ParameterC = new[] {1, 2},
                    OptionA = "option value"
                }
            );
        }

        private static IEnumerable<TestCaseData> GetTestCases_InitializeEntryPoint_Negative()
        {
            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[] {new CommandOptionInput(nameof(AllSupportedTypesCommand.Int), "1234.5")}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[] {new CommandOptionInput(nameof(AllSupportedTypesCommand.Int), new[] {"123", "456"})}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[] {new CommandOptionInput(nameof(AllSupportedTypesCommand.Int))}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(AllSupportedTypesCommand)},
                new CommandLineInput(
                    new[] {new CommandOptionInput(nameof(AllSupportedTypesCommand.NonConvertible), "123")}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(DivideCommand)},
                new CommandLineInput(new[] {"div"}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(DivideCommand)},
                new CommandLineInput(new[] {"div", "-D", "13"}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(ConcatCommand)},
                new CommandLineInput(new[] {"concat"}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(ConcatCommand)},
                new CommandLineInput(
                    new[] {"concat"},
                    new[] {new CommandOptionInput("s", "_")}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(ParameterCommand)},
                new CommandLineInput(
                    new[] {"param", "cmd"},
                    new[] {new CommandOptionInput("o", "option value")}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(ParameterCommand)},
                new CommandLineInput(
                    new[] {"param", "cmd", "abc", "123", "invalid"},
                    new[] {new CommandOptionInput("o", "option value")}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(DivideCommand)},
                new CommandLineInput(new[] {"non-existing"}),
                new Dictionary<string, string>()
            );

            yield return new TestCaseData(
                new[] {typeof(BrokenEnumerableCommand)},
                new CommandLineInput(new[] {"value1", "value2"}),
                new Dictionary<string, string>()
            );
        }

        [TestCaseSource(nameof(GetTestCases_InitializeEntryPoint))]
        public void InitializeEntryPoint_Test(
            IReadOnlyList<Type> commandTypes,
            CommandLineInput commandLineInput,
            IReadOnlyDictionary<string, string> environmentVariables,
            ICommand expectedResult)
        {
            // Arrange
            var applicationSchema = ApplicationSchema.Resolve(commandTypes);
            var typeActivator = new DefaultTypeActivator();

            // Act
            var command = applicationSchema.InitializeEntryPoint(commandLineInput, environmentVariables, typeActivator);

            // Assert
            command.Should().BeEquivalentTo(expectedResult, o => o.RespectingRuntimeTypes());
        }

        [TestCaseSource(nameof(GetTestCases_InitializeEntryPoint_Negative))]
        public void InitializeEntryPoint_Negative_Test(
            IReadOnlyList<Type> commandTypes,
            CommandLineInput commandLineInput,
            IReadOnlyDictionary<string, string> environmentVariables)
        {
            // Arrange
            var applicationSchema = ApplicationSchema.Resolve(commandTypes);
            var typeActivator = new DefaultTypeActivator();

            // Act & Assert
            var ex = Assert.Throws<CliFxException>(() =>
                applicationSchema.InitializeEntryPoint(commandLineInput, environmentVariables, typeActivator));
            Console.WriteLine(ex.Message);
        }
    }
}