template engine
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EugeneTes
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using Inspectron.Epson.PrintServer.Printers.Utils;
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using Inspectron.Epson.PrintServer.Printers.Utils.KitchenReceipt;
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using System.Text.Json;
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namespace Inspectron.Epson.TemplateEngine.Tests;
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public class KitchenReceiptTemplateTests
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{
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private const int LineWidth = 42;
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private const int BigLineWidth = 22;
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private readonly ReceiptTemplateEngine _engine = new();
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private static string GetTemplatePath()
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{
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return Path.Combine(AppContext.BaseDirectory, "Templates", "KitchenReceipt.xml");
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}
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[Fact]
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public void RenderKitchenReceipt_BasicStructure()
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{
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var template = File.ReadAllText(GetTemplatePath());
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var json = """
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{
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"Title": "Test Restaurant",
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"TransactionDateTime": "2024-03-15T14:30:00Z",
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"ReceiptNumber": "42",
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"WaiterName": "Max",
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"TableNumber": "5",
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"SpecialInstruction": null,
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"HasGangs": false,
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"HasDishes": false,
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"Gangs": [],
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"Dishes": []
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}
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""";
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var commands = _engine.Render(template, json, LineWidth, BigLineWidth);
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Assert.True(commands.Count > 0);
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// First line: title centered in big font, red
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Assert.True(commands[0].IsBig);
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Assert.True(commands[0].IsTall);
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Assert.True(commands[0].IsRed);
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Assert.Contains("Test Restaurant", commands[0].Text);
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// Second line: separator
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Assert.Equal(new string('-', LineWidth), commands[1].Text);
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// Empty line
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Assert.Equal("", commands[2].Text);
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}
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[Fact]
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public void RenderKitchenReceipt_WithSpecialInstruction()
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{
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var template = File.ReadAllText(GetTemplatePath());
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var json = """
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{
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"Title": "Test Restaurant",
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"TransactionDateTime": "2024-03-15T14:30:00Z",
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"ReceiptNumber": "42",
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"WaiterName": "Max",
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"TableNumber": "5",
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"SpecialInstruction": "RUSH ORDER",
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"HasGangs": false,
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"HasDishes": false,
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"Gangs": [],
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"Dishes": []
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}
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""";
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var commands = _engine.Render(template, json, LineWidth, BigLineWidth);
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// Should contain the special instruction
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var specialCommands = commands.Where(c => c.Text.Contains("RUSH ORDER")).ToList();
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Assert.NotEmpty(specialCommands);
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Assert.True(specialCommands[0].IsBig);
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Assert.True(specialCommands[0].IsBold);
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}
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[Fact]
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public void RenderKitchenReceipt_WithGangs()
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{
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var template = File.ReadAllText(GetTemplatePath());
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var json = """
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{
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"Title": "Test Restaurant",
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"TransactionDateTime": "2024-03-15T14:30:00Z",
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"ReceiptNumber": "42",
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"WaiterName": "Max",
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"TableNumber": "5",
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"SpecialInstruction": null,
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"HasGangs": true,
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"HasDishes": false,
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"Gangs": [
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{
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"Id": 1,
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"Name": "Vorspeise",
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"Dishes": [
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{
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"Number": 2,
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"Name": "Caesar Salad",
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"GuestPrefix": "",
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"GuestId": null,
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"Modifications": { "Removed": [], "Added": [], "HasModifications": false },
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"Comment": null
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}
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]
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},
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{
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"Id": 2,
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"Name": "Hauptgang",
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"Dishes": [
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{
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"Number": 1,
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"Name": "Wiener Schnitzel",
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"GuestPrefix": "",
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"GuestId": null,
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"Modifications": { "Removed": ["Pommes"], "Added": ["Reis"], "HasModifications": true },
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"Comment": "Well done"
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}
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]
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}
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],
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"Dishes": []
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}
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""";
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var commands = _engine.Render(template, json, LineWidth, BigLineWidth);
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// Should contain gang names
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Assert.Contains(commands, c => c.Text.Contains("1. Vorspeise"));
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Assert.Contains(commands, c => c.Text.Contains("2. Hauptgang"));
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// Should contain dish names
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Assert.Contains(commands, c => c.Text.Contains("2x Caesar Salad"));
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Assert.Contains(commands, c => c.Text.Contains("1x Wiener Schnitzel"));
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// Should contain modifications
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Assert.Contains(commands, c => c.Text.Contains("- Pommes") && c.IsBold);
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Assert.Contains(commands, c => c.Text.Contains("+ Reis") && c.IsBold);
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// Should contain comment
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Assert.Contains(commands, c => c.Text.Contains("Comment: Well done") && c.IsBold);
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// Should have cut between gangs (not after last)
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var cutCommands = commands.Where(c => c.IsCut).ToList();
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Assert.Single(cutCommands);
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// Gang headers should be red and big
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var gangHeaders = commands.Where(c => c.Text.Contains("Vorspeise") || c.Text.Contains("Hauptgang")).ToList();
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Assert.All(gangHeaders, c =>
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{
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Assert.True(c.IsRed);
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Assert.True(c.IsBig);
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Assert.True(c.IsTall);
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});
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}
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[Fact]
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public void RenderKitchenReceipt_DishesAreTall()
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{
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var template = File.ReadAllText(GetTemplatePath());
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var json = """
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{
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"Title": "Test",
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"TransactionDateTime": "2024-01-01T00:00:00Z",
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"ReceiptNumber": "1",
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"WaiterName": "W",
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"TableNumber": "1",
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"SpecialInstruction": null,
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"HasGangs": true,
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"HasDishes": false,
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"Gangs": [
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{
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"Id": 1,
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"Name": "Gang1",
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"Dishes": [
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{
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"Number": 1,
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"Name": "Item",
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"GuestPrefix": "",
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"GuestId": null,
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"Modifications": { "Removed": [], "Added": [], "HasModifications": false },
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"Comment": null
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}
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]
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}
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],
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"Dishes": []
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}
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""";
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var commands = _engine.Render(template, json, LineWidth, BigLineWidth);
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// Dish line should be tall
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var dishCmd = commands.First(c => c.Text.Contains("1x Item"));
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Assert.True(dishCmd.IsTall);
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}
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[Fact]
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public void RenderKitchenReceipt_TableLineCenteredBigBold()
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{
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var template = File.ReadAllText(GetTemplatePath());
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var json = """
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{
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"Title": "Test",
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"TransactionDateTime": "2024-01-01T00:00:00Z",
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"ReceiptNumber": "1",
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"WaiterName": "W",
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"TableNumber": "12",
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"SpecialInstruction": null,
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"HasGangs": false,
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"HasDishes": false,
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"Gangs": [],
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"Dishes": []
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}
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""";
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var commands = _engine.Render(template, json, LineWidth, BigLineWidth);
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var tableCmd = commands.First(c => c.Text.Contains("Tisch: 12"));
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Assert.True(tableCmd.IsBig);
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Assert.True(tableCmd.IsBold);
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// Should be centered in big font width
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Assert.True(tableCmd.Text.StartsWith(" "));
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}
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[Fact]
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public void CompareWithExistingConverter_BasicReceipt()
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{
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// Create a KitchenReceipt via the existing converter
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var receipt = new KitchenReceipt
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{
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Title = "Test Restaurant",
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TransactionDateTime = new DateTime(2024, 3, 15, 14, 30, 0),
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ReceiptNumber = "42",
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WaiterName = "Max Mustermann",
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WaiterId = "W001",
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TableNumber = "5",
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SpecialInstruction = null,
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Gangs = new List<Gang>(),
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Dishes = new List<Dish>()
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};
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var existingConverter = new KitchenReceiptConverter(LineWidth, BigLineWidth);
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var existingCommands = existingConverter.ConvertToPrintCommands(receipt);
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// Render with template engine
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var template = File.ReadAllText(GetTemplatePath());
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var jsonData = JsonSerializer.Serialize(new
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{
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receipt.Title,
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TransactionDateTime = receipt.TransactionDateTime.ToString("o"),
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receipt.ReceiptNumber,
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receipt.WaiterName,
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receipt.TableNumber,
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receipt.SpecialInstruction,
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HasGangs = receipt.Gangs.Count > 0,
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HasDishes = receipt.Dishes != null && receipt.Dishes.Any(),
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receipt.Gangs,
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receipt.Dishes
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});
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var templateCommands = _engine.Render(template, jsonData, LineWidth, BigLineWidth);
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// Compare key structural elements
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// Title should match
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Assert.Equal(existingCommands[0].Text, templateCommands[0].Text);
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Assert.Equal(existingCommands[0].IsRed, templateCommands[0].IsRed);
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Assert.Equal(existingCommands[0].IsBig, templateCommands[0].IsBig);
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Assert.Equal(existingCommands[0].IsTall, templateCommands[0].IsTall);
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// Separator should match
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Assert.Equal(existingCommands[1].Text, templateCommands[1].Text);
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// Empty line
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Assert.Equal(existingCommands[2].Text, templateCommands[2].Text);
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// Date/receipt number line should match formatting
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Assert.Equal(existingCommands[3].Text, templateCommands[3].Text);
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// Waiter name
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Assert.Equal(existingCommands[4].Text, templateCommands[4].Text);
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// Table number
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Assert.Equal(existingCommands[5].Text, templateCommands[5].Text);
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Assert.Equal(existingCommands[5].IsBig, templateCommands[5].IsBig);
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Assert.Equal(existingCommands[5].IsBold, templateCommands[5].IsBold);
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}
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}
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