test(examples): render hemplate views into buffers

Use hemplate render_into in public examples and example tests instead of the string-returning render helper, preserving SafeHtml wrapping only at the explicit effect boundary.

req: view/001

req: html_safety/002

examples/kanban/src/lib.rs

@@ -45,11 +45,11 @@ mod tests {
 
     fn render_empty_board() -> SafeHtml {
         // req: html_safety/002 req: view/001
-        SafeHtml::trusted(
+        let mut html = String::new();
         BoardColumns { columns: Vec::new() }
-                .render()
+            .render_into(&mut html)
-                .expect("kanban board test view renders"),
+            .expect("kanban board test view renders");
-        )
+        SafeHtml::trusted(html)
     }
 
     fn selector(value: &str) -> Selector {

examples/kanban/src/main.rs

@@ -310,7 +310,11 @@ fn render_html(template: &impl Hemplate) -> SafeHtml {
 }
 
 fn render_template(template: &impl Hemplate) -> String {
-    template.render().expect("kanban hemplate view renders")
+    let mut html = String::new();
+    template
+        .render_into(&mut html)
+        .expect("kanban hemplate view renders");
+    html
 }
 
 #[cfg(test)]

examples/techdemo/src/lib.rs

@@ -40,11 +40,11 @@ mod tests {
 
     fn render_fast_metric(label: &'static str) -> SafeHtml {
         // req: html_safety/002 req: view/001
-        SafeHtml::trusted(
+        let mut html = String::new();
         FastMetric { label }
-                .render()
+            .render_into(&mut html)
-                .expect("techdemo fast metric renders"),
+            .expect("techdemo fast metric renders");
-        )
+        SafeHtml::trusted(html)
     }
 
     // req: examples/001 req: form/001 req: form/004 req: form/006 req: derive_handler/003

examples/techdemo/src/main.rs

@@ -549,7 +549,11 @@ fn render_control_center(page: ControlCenter) -> String {
 }
 
 fn render_template(template: &impl Hemplate) -> String {
-    template.render().expect("techdemo hemplate partial renders")
+    let mut html = String::new();
+    template
+        .render_into(&mut html)
+        .expect("techdemo hemplate partial renders");
+    html
 }
 
 fn render_html(template: &impl Hemplate) -> SafeHtml {

examples/v0/src/lib.rs

@@ -88,11 +88,11 @@ mod tests {
 
     fn render_todo_row(todo: &Todo) -> SafeHtml {
         // req: html_safety/002 req: view/001
-        SafeHtml::trusted(
+        let mut html = String::new();
         TodoRow { title: todo.title.clone() }
-                .render()
+            .render_into(&mut html)
-                .expect("v0 todo row renders"),
+            .expect("v0 todo row renders");
-        )
+        SafeHtml::trusted(html)
     }
 
     // req: examples/001 req: form/001 req: form/004 req: form/006 req: derive_handler/003
@@ -143,11 +143,11 @@ mod tests {
 
     fn render_docs_content(message: &'static str) -> SafeHtml {
         // req: html_safety/002 req: view/001
-        SafeHtml::trusted(
+        let mut html = String::new();
         DocsContent { message }
-                .render()
+            .render_into(&mut html)
-                .expect("v0 docs content renders"),
+            .expect("v0 docs content renders");
-        )
+        SafeHtml::trusted(html)
     }
 
     // req: examples/001 req: form/001 req: form/004 req: form/006 req: derive_handler/003

examples/v0/src/main.rs

@@ -222,7 +222,11 @@ fn render_html(template: &impl Hemplate) -> SafeHtml {
 }
 
 fn render_template(template: &impl Hemplate) -> String {
-    template.render().expect("v0 hemplate view renders")
+    let mut html = String::new();
+    template
+        .render_into(&mut html)
+        .expect("v0 hemplate view renders");
+    html
 }
 
 #[cfg(test)]