// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
using System.CommandLine;
using System.CommandLine.Parsing;
using System.Text.Json;
using System.Text.Json.Serialization;
using AzureMcp.Core.Models.Command;
using AzureMcp.Postgres.Commands.Table;
using AzureMcp.Postgres.Services;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using NSubstitute;
using Xunit;
namespace AzureMcp.Postgres.UnitTests.Table;
public class TableSchemaGetCommandTests
{
private readonly IServiceProvider _serviceProvider;
private readonly IPostgresService _postgresService;
private readonly ILogger<TableSchemaGetCommand> _logger;
public TableSchemaGetCommandTests()
{
_postgresService = Substitute.For<IPostgresService>();
_logger = Substitute.For<ILogger<TableSchemaGetCommand>>();
var collection = new ServiceCollection();
collection.AddSingleton(_postgresService);
_serviceProvider = collection.BuildServiceProvider();
}
[Fact]
public async Task ExecuteAsync_ReturnsSchema_WhenSchemaExists()
{
var expectedSchema = new List<string>(["CREATE TABLE test (id INT);"]);
_postgresService.GetTableSchemaAsync("sub123", "rg1", "user1", "server1", "db123", "table123").Returns(expectedSchema);
var command = new TableSchemaGetCommand(_logger);
var args = command.GetCommand().Parse(["--subscription", "sub123", "--resource-group", "rg1", "--user", "user1", "--server", "server1", "--database", "db123", "--table", "table123"]);
var context = new CommandContext(_serviceProvider);
var response = await command.ExecuteAsync(context, args);
Assert.NotNull(response);
Assert.Equal(200, response.Status);
Assert.NotNull(response.Results);
var json = JsonSerializer.Serialize(response.Results);
var result = JsonSerializer.Deserialize<GetSchemaResult>(json);
Assert.NotNull(result);
Assert.Equal(expectedSchema, result.Schema);
}
[Fact]
public async Task ExecuteAsync_ReturnsNull_WhenSchemaDoesNotExist()
{
_postgresService.GetTableSchemaAsync("sub123", "rg1", "user1", "server1", "db123", "table123").Returns([]);
var command = new TableSchemaGetCommand(_logger);
var args = command.GetCommand().Parse(["--subscription", "sub123", "--resource-group", "rg1", "--user", "user1", "--server", "server1", "--database", "db123", "--table", "table123"]);
var context = new CommandContext(_serviceProvider);
var response = await command.ExecuteAsync(context, args);
Assert.NotNull(response);
Assert.Equal(200, response.Status);
Assert.Equal("Success", response.Message);
Assert.Null(response.Results);
}
[Theory]
[InlineData("--subscription")]
[InlineData("--resource-group")]
[InlineData("--user")]
[InlineData("--server")]
[InlineData("--database")]
[InlineData("--table")]
public async Task ExecuteAsync_ReturnsError_WhenParameterIsMissing(string missingParameter)
{
var command = new TableSchemaGetCommand(_logger);
var args = command.GetCommand().Parse(new string[]
{
missingParameter == "--subscription" ? "" : "--subscription", "sub123",
missingParameter == "--resource-group" ? "" : "--resource-group", "rg1",
missingParameter == "--user" ? "" : "--user", "user1",
missingParameter == "--server" ? "" : "--server", "server123",
missingParameter == "--database" ? "" : "--database", "db123",
missingParameter == "--table" ? "" : "--table", "table123"
});
var context = new CommandContext(_serviceProvider);
var response = await command.ExecuteAsync(context, args);
Assert.NotNull(response);
Assert.Equal(400, response.Status);
Assert.Equal($"Missing Required options: {missingParameter}", response.Message);
}
private class GetSchemaResult
{
[JsonPropertyName("Schema")]
public List<string> Schema { get; set; } = new List<string>();
}
}
