template engine
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EugeneTes
445
Inspectron.Epson.TemplateEngine.Tests/TemplateRendererTests.cs
Normal file
445
Inspectron.Epson.TemplateEngine.Tests/TemplateRendererTests.cs
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namespace Inspectron.Epson.TemplateEngine.Tests;
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public class TemplateRendererTests
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{
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private readonly ReceiptTemplateEngine _engine = new();
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[Fact]
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public void Render_EmptyReceipt()
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{
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var commands = _engine.Render("<receipt></receipt>", "{}", 42, 22);
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Assert.Empty(commands);
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}
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[Fact]
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public void Render_SimpleLine()
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{
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var commands = _engine.Render(
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"<receipt><line>Hello World</line></receipt>",
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"{}", 42, 22);
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Assert.Single(commands);
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Assert.Equal("Hello World", commands[0].Text);
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}
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[Fact]
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public void Render_LineWithDataBinding()
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{
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var commands = _engine.Render(
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"<receipt><line>Hello {{Name}}</line></receipt>",
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"""{"Name":"John"}""", 42, 22);
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Assert.Single(commands);
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Assert.Equal("Hello John", commands[0].Text);
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}
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[Fact]
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public void Render_LineWithFormatting()
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{
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var commands = _engine.Render(
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"""<receipt><line bold="true" big="true" tall="true" red="true">Text</line></receipt>""",
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"{}", 42, 22);
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var cmd = commands[0];
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Assert.True(cmd.IsBold);
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Assert.True(cmd.IsBig);
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Assert.True(cmd.IsTall);
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Assert.True(cmd.IsRed);
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}
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[Fact]
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public void Render_LineWithCenterAlignment()
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{
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var commands = _engine.Render(
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"""<receipt><line align="center">Test</line></receipt>""",
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"{}", 42, 22);
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Assert.Equal(" Test", commands[0].Text);
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}
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[Fact]
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public void Render_LineWithCenterAlignment_BigFont()
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{
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var commands = _engine.Render(
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"""<receipt><line align="center" big="true">Test</line></receipt>""",
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"{}", 42, 22);
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Assert.Equal(" Test", commands[0].Text);
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}
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[Fact]
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public void Render_EmptyLine()
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{
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var commands = _engine.Render(
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"<receipt><line /></receipt>",
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"{}", 42, 22);
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Assert.Single(commands);
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Assert.Equal("", commands[0].Text);
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}
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[Fact]
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public void Render_Separator()
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{
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var commands = _engine.Render(
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"<receipt><separator /></receipt>",
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"{}", 42, 22);
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Assert.Single(commands);
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Assert.Equal(new string('-', 42), commands[0].Text);
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}
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[Fact]
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public void Render_Cut()
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{
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var commands = _engine.Render(
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"<receipt><cut /></receipt>",
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"{}", 42, 22);
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Assert.Single(commands);
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Assert.True(commands[0].IsCut);
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}
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[Fact]
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public void Render_Feed()
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{
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var commands = _engine.Render(
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"""<receipt><feed lines="3" /></receipt>""",
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"{}", 42, 22);
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Assert.Equal(3, commands.Count);
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Assert.All(commands, c => Assert.Equal("", c.Text));
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}
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[Fact]
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public void Render_Columns()
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{
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var commands = _engine.Render(
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"""<receipt><columns left="Name" right="Price" /></receipt>""",
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"{}", 42, 22);
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Assert.Single(commands);
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Assert.Equal(42, commands[0].Text.Length);
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Assert.StartsWith("Name", commands[0].Text);
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Assert.EndsWith("Price", commands[0].Text);
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}
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[Fact]
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public void Render_ColumnsWithDataBinding()
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{
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var commands = _engine.Render(
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"""<receipt><columns left="{{Label}}" right="{{Value}}" /></receipt>""",
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"""{"Label":"Total","Value":"100.00"}""", 42, 22);
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Assert.Single(commands);
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Assert.Contains("Total", commands[0].Text);
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Assert.Contains("100.00", commands[0].Text);
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}
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[Fact]
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public void Render_Foreach()
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{
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var commands = _engine.Render("""
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<receipt>
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<foreach items="Items" var="item">
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<line>{{item.Name}}</line>
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</foreach>
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</receipt>
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""",
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"""{"Items":[{"Name":"Pizza"},{"Name":"Pasta"},{"Name":"Salad"}]}""",
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42, 22);
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Assert.Equal(3, commands.Count);
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Assert.Equal("Pizza", commands[0].Text);
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Assert.Equal("Pasta", commands[1].Text);
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Assert.Equal("Salad", commands[2].Text);
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}
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[Fact]
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public void Render_Foreach_EmptyArray()
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{
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var commands = _engine.Render("""
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<receipt>
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<foreach items="Items" var="item">
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<line>{{item.Name}}</line>
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</foreach>
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</receipt>
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""",
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"""{"Items":[]}""", 42, 22);
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Assert.Empty(commands);
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}
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[Fact]
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public void Render_Foreach_WithLoopVariables()
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{
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var commands = _engine.Render("""
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<receipt>
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<foreach items="Items" var="item">
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<line>{{$index}}: {{item.Name}}</line>
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</foreach>
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</receipt>
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""",
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"""{"Items":[{"Name":"A"},{"Name":"B"},{"Name":"C"}]}""",
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42, 22);
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Assert.Equal(3, commands.Count);
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Assert.Equal("0: A", commands[0].Text);
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Assert.Equal("1: B", commands[1].Text);
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Assert.Equal("2: C", commands[2].Text);
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}
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[Fact]
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public void Render_NestedForeach()
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{
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var commands = _engine.Render("""
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<receipt>
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<foreach items="Groups" var="group">
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<line>{{group.Name}}</line>
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<foreach items="group.Items" var="item">
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<line> {{item.Name}}</line>
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</foreach>
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</foreach>
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</receipt>
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""",
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"""{"Groups":[{"Name":"G1","Items":[{"Name":"A"},{"Name":"B"}]},{"Name":"G2","Items":[{"Name":"C"}]}]}""",
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42, 22);
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Assert.Equal(5, commands.Count);
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Assert.Equal("G1", commands[0].Text);
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Assert.Equal(" A", commands[1].Text);
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Assert.Equal(" B", commands[2].Text);
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Assert.Equal("G2", commands[3].Text);
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Assert.Equal(" C", commands[4].Text);
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}
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[Fact]
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public void Render_If_True()
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{
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var commands = _engine.Render("""
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<receipt>
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<if test="Name">
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<line>Has name: {{Name}}</line>
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</if>
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</receipt>
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""",
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"""{"Name":"John"}""", 42, 22);
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Assert.Single(commands);
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Assert.Equal("Has name: John", commands[0].Text);
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}
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[Fact]
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public void Render_If_False()
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{
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var commands = _engine.Render("""
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<receipt>
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<if test="Name">
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<line>Has name</line>
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</if>
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</receipt>
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""",
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"""{}""", 42, 22);
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Assert.Empty(commands);
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}
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[Fact]
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public void Render_IfElse_True()
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{
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var commands = _engine.Render("""
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<receipt>
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<if test="Name">
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<line>Yes</line>
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</if>
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<else>
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<line>No</line>
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</else>
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</receipt>
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""",
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"""{"Name":"John"}""", 42, 22);
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Assert.Single(commands);
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Assert.Equal("Yes", commands[0].Text);
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}
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[Fact]
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public void Render_IfElse_False()
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{
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var commands = _engine.Render("""
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<receipt>
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<if test="Name">
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<line>Yes</line>
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</if>
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<else>
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<line>No</line>
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</else>
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</receipt>
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""",
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"""{}""", 42, 22);
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Assert.Single(commands);
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Assert.Equal("No", commands[0].Text);
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}
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[Fact]
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public void Render_If_NegatedCondition()
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{
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var commands = _engine.Render("""
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<receipt>
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<if test="!$last">
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<cut />
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</if>
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</receipt>
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""",
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"""{}""", 42, 22);
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// $last is not set so not a boolean false, but the variable doesn't exist
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// When there's no foreach context, $last is null, so !null = true
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Assert.Single(commands);
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Assert.True(commands[0].IsCut);
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}
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[Fact]
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public void Render_Foreach_WithIfNotLast()
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{
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var commands = _engine.Render("""
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<receipt>
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<foreach items="Items" var="item">
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<line>{{item.Name}}</line>
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<if test="!$last">
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<separator />
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</if>
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</foreach>
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</receipt>
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""",
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"""{"Items":[{"Name":"A"},{"Name":"B"},{"Name":"C"}]}""",
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42, 22);
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// A, sep, B, sep, C = 5
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Assert.Equal(5, commands.Count);
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Assert.Equal("A", commands[0].Text);
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Assert.Equal(new string('-', 42), commands[1].Text);
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Assert.Equal("B", commands[2].Text);
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Assert.Equal(new string('-', 42), commands[3].Text);
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Assert.Equal("C", commands[4].Text);
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}
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[Fact]
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public void Render_LineWithWrap()
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{
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var commands = _engine.Render(
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"""<receipt><line wrap="true">The quick brown fox jumps over the lazy dog and more text here</line></receipt>""",
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"{}", 30, 15);
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Assert.True(commands.Count > 1);
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}
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[Fact]
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public void Render_LineSpacing()
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{
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var commands = _engine.Render(
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"""<receipt><line lineSpacing="50">Text</line></receipt>""",
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"{}", 42, 22);
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Assert.Equal(50, commands[0].SetLineSpacing);
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}
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[Fact]
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public void Render_FormatString()
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{
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var commands = _engine.Render(
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"<receipt><line>{{Price:F2}}</line></receipt>",
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"""{"Price":9.5}""", 42, 22);
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Assert.Equal("9.50", commands[0].Text);
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}
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[Fact]
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public void Render_DateTimeFormat()
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{
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var commands = _engine.Render(
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"<receipt><line>{{Date:dd.MM.yyyy}}</line></receipt>",
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"""{"Date":"2024-03-15T14:30:00Z"}""", 42, 22);
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Assert.Equal("15.03.2024", commands[0].Text);
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}
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[Fact]
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public void Render_Row()
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{
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var commands = _engine.Render("""
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<receipt>
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<row>
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<col width="14">Left</col>
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<col width="14" align="center">Center</col>
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<col width="14" align="right">Right</col>
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</row>
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</receipt>
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""",
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"{}", 42, 22);
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Assert.Single(commands);
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Assert.Equal(42, commands[0].Text.Length);
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}
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[Fact]
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public void Render_InvalidXml_ThrowsParsingException()
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{
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Assert.Throws<TemplateParsingException>(() =>
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_engine.Render("not xml", "{}", 42, 22));
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}
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[Fact]
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public void Render_InvalidJson_ThrowsRenderingException()
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{
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Assert.Throws<TemplateRenderingException>(() =>
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_engine.Render("<receipt></receipt>", "not json", 42, 22));
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}
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[Fact]
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public void Render_ComplexTemplate()
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{
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var template = """
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<receipt>
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<line align="center" big="true" red="true">Restaurant</line>
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<separator />
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<line />
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<line align="center">{{DateTime:dd-MMM-yy HH:mm}} Nr.:{{Number}}</line>
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<line align="center" big="true" bold="true">Tisch: {{Table}}</line>
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<separator />
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<foreach items="Items" var="item">
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<line bold="true">{{item.Qty}}x {{item.Name}}</line>
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</foreach>
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<separator />
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<columns left="Total:" right="{{Total:F2}} CHF" bold="true" />
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<cut />
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</receipt>
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""";
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var json = """
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{
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"DateTime": "2024-03-15T14:30:00Z",
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"Number": "42",
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"Table": "5",
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"Items": [
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{"Qty": 2, "Name": "Margherita"},
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{"Qty": 1, "Name": "Tiramisu"}
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],
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"Total": 45.50
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}
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""";
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var commands = _engine.Render(template, json, 42, 22);
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Assert.True(commands.Count >= 10);
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// Header
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Assert.True(commands[0].IsRed);
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Assert.True(commands[0].IsBig);
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Assert.Contains("Restaurant", commands[0].Text);
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// Last command is cut
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Assert.True(commands[^1].IsCut);
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}
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}
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