update: renderer initial idea

src/renderer_test.zig

@@ -0,0 +1,120 @@
+const std = @import("std");
+const testing = std.testing;
+
+const Renderer = @import("renderer.zig").Renderer;
+const RenderError = @import("renderer.zig").RenderError;
+
+const Context = @import("context.zig").Context;
+const Value = @import("context.zig").Value; // ajuste o caminho se estiver diferente
+
+test "renderer: literal + variável simples" {
+    const alloc = testing.allocator;
+    var ctx = Context.init(alloc);
+    defer ctx.deinit();
+
+    try ctx.set("nome", Value{ .string = "Mariana" });
+
+    const renderer = Renderer.init(&ctx);
+
+    var buf = std.ArrayList(u8){};
+    defer buf.deinit(alloc);
+
+    const template =
+        \\Olá, {{ nome }}! Bem-vinda.
+    ;
+
+    try renderer.renderString(template, buf.writer(alloc));
+
+    try testing.expectEqualStrings("Olá, Mariana! Bem-vinda.", buf.items);
+}
+
+test "renderer: filtros + autoescape" {
+    const alloc = testing.allocator;
+    var ctx = Context.init(alloc);
+
+    defer ctx.deinit();
+
+    try ctx.set("html", Value{ .string = "<script>alert()</script>" });
+    try ctx.set("texto", Value{ .string = "maiusculo e slug" });
+
+    const renderer = Renderer.init(&ctx);
+
+    var buf = std.ArrayList(u8){};
+    defer buf.deinit(alloc);
+
+    const template =
+        \\Normal:   {{ html }}
+        \\Safe:     {{ html|safe }}
+        \\Filtrado: {{ texto|upper|slugify }}
+    ;
+
+    try renderer.renderString(template, buf.writer(alloc));
+
+    const expected =
+        \\Normal:   &lt;script&gt;alert()&lt;/script&gt;
+        \\Safe:     <script>alert()</script>
+        \\Filtrado: maiusculo-e-slug
+    ;
+
+    try testing.expectEqualStrings(expected, buf.items);
+}
+
+test "literal simples" {
+    const alloc = testing.allocator;
+    var ctx = Context.init(alloc);
+
+    defer ctx.deinit();
+
+    const renderer = Renderer.init(&ctx);
+
+    var buf = std.ArrayList(u8){};
+    defer buf.deinit(alloc);
+
+    const template = "Texto literal com acentos: Olá, mundo!";
+
+    try renderer.renderString(template, buf.writer(alloc));
+
+    try testing.expectEqualStrings("Texto literal com acentos: Olá, mundo!", buf.items);
+}
+
+test "variável com filtro encadeado e autoescape" {
+    const alloc = testing.allocator;
+    var ctx = Context.init(alloc);
+
+    defer ctx.deinit();
+
+    const renderer = Renderer.init(&ctx);
+
+    try ctx.set("texto", Value{ .string = "Exemplo de Texto" });
+
+
+    var buf = std.ArrayList(u8){};
+    defer buf.deinit(alloc);
+
+    const template = "Resultado: {{ texto|lower|upper }}";
+
+    try renderer.renderString(template, buf.writer(alloc));
+
+    try testing.expectEqualStrings("Resultado: EXEMPLO DE TEXTO", buf.items);  // assume lower then upper
+}
+
+test "autoescape com safe" {
+    const alloc = testing.allocator;
+    var ctx = Context.init(alloc);
+
+    defer ctx.deinit();
+
+    const renderer = Renderer.init(&ctx);
+
+    try ctx.set("html", Value{ .string = "<div>conteúdo</div>" });
+
+
+    var buf = std.ArrayList(u8){};
+    defer buf.deinit(alloc);
+
+    const template = "Escape: {{ html }} | Safe: {{ html|safe }}";
+
+    try renderer.renderString(template, buf.writer(alloc));
+
+    try testing.expectEqualStrings("Escape: &lt;div&gt;conteúdo&lt;/div&gt; | Safe: <div>conteúdo</div>", buf.items);
+}