templates support

Inspectron.Epson.Templates.Tests/Interpreter/InterpreterRowTests.cs

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+using Inspectron.Epson.Templates.Configuration;
+using Inspectron.Epson.Templates.Interpreter;
+using Inspectron.Epson.Templates.Language;
+using Inspectron.Epson.Templates.Language.Nodes;
+
+namespace Inspectron.Epson.Templates.Tests.Interpreter;
+
+public class InterpreterRowTests
+{
+    private readonly PrinterProfile _profile = new("test", "Test Printer", 48, 24, false);
+
+    private TemplateNode Parse(string source)
+    {
+        var lexer = new Lexer(source);
+        var parser = new Parser(lexer.Tokenize().Tokens);
+        return parser.Parse().Template;
+    }
+
+    [Fact]
+    public void Interpret_Row_CombinesColumns()
+    {
+        var template = Parse("@row\n|20|Name|10|Value\n@endrow");
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, "{}");
+
+        // Should have a single command with combined column text
+        var rowCmd = commands.FirstOrDefault(c => c.Text.Contains("Name") && c.Text.Contains("Value"));
+        Assert.NotNull(rowCmd);
+    }
+
+    [Fact]
+    public void Interpret_Row_LeftAlignsPaddsRight()
+    {
+        var template = Parse("@row\n|10|Hi\n@endrow");
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, "{}");
+
+        var rowCmd = commands.FirstOrDefault(c => c.Text.Contains("Hi"));
+        Assert.NotNull(rowCmd);
+        Assert.Equal(10, rowCmd.Text.Length);
+        Assert.StartsWith("Hi", rowCmd.Text);
+    }
+
+    [Fact]
+    public void Interpret_Row_RightAlignsPaddsLeft()
+    {
+        var template = Parse("@row\n|10,right|Hi\n@endrow");
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, "{}");
+
+        var rowCmd = commands.FirstOrDefault(c => c.Text.Contains("Hi"));
+        Assert.NotNull(rowCmd);
+        Assert.Equal(10, rowCmd.Text.Length);
+        Assert.EndsWith("Hi", rowCmd.Text);
+    }
+
+    [Fact]
+    public void Interpret_Row_CenterAlignsCentersText()
+    {
+        var template = Parse("@row\n|10,center|Hi\n@endrow");
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, "{}");
+
+        var rowCmd = commands.FirstOrDefault(c => c.Text.Contains("Hi"));
+        Assert.NotNull(rowCmd);
+        Assert.Equal(10, rowCmd.Text.Length);
+        Assert.StartsWith("    Hi", rowCmd.Text);
+    }
+
+    [Fact]
+    public void Interpret_Row_TruncatesLongText()
+    {
+        var template = Parse("@row\n|5|HelloWorld\n@endrow");
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, "{}");
+
+        var rowCmd = commands.FirstOrDefault(c => c.Text.Contains("Hello"));
+        Assert.NotNull(rowCmd);
+        Assert.Equal(5, rowCmd.Text.Length);
+        Assert.Equal("Hello", rowCmd.Text);
+    }
+
+    [Fact]
+    public void Interpret_Row_WithBindings_ResolvesValues()
+    {
+        var template = Parse("@row\n|20|{Name}|10,right|{Price:F2}\n@endrow");
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, """{"Name": "Item", "Price": 9.99}""");
+
+        var rowCmd = commands.FirstOrDefault(c => c.Text.Contains("Item") && c.Text.Contains("9.99"));
+        Assert.NotNull(rowCmd);
+    }
+
+    [Fact]
+    public void Interpret_Row_MultipleColumns_CorrectTotalWidth()
+    {
+        var template = Parse("@row\n|10|A|10|B|10|C\n@endrow");
+        var interpreter = new TemplateInterpreter(_profile);
+        var commands = interpreter.Interpret(template, "{}");
+
+        var rowCmd = commands.FirstOrDefault(c => c.Text.Contains("A") && c.Text.Contains("B") && c.Text.Contains("C"));
+        Assert.NotNull(rowCmd);
+        Assert.Equal(30, rowCmd.Text.Length);
+    }
+}