Add tests

packages/yew-macro/tests/html_macro/dyn-prop-fail.rs

@@ -0,0 +1,67 @@
+#![no_implicit_prelude]
+
+// Shadow primitives
+#[allow(non_camel_case_types)]
+pub struct bool;
+#[allow(non_camel_case_types)]
+pub struct char;
+#[allow(non_camel_case_types)]
+pub struct f32;
+#[allow(non_camel_case_types)]
+pub struct f64;
+#[allow(non_camel_case_types)]
+pub struct i128;
+#[allow(non_camel_case_types)]
+pub struct i16;
+#[allow(non_camel_case_types)]
+pub struct i32;
+#[allow(non_camel_case_types)]
+pub struct i64;
+#[allow(non_camel_case_types)]
+pub struct i8;
+#[allow(non_camel_case_types)]
+pub struct isize;
+#[allow(non_camel_case_types)]
+pub struct str;
+#[allow(non_camel_case_types)]
+pub struct u128;
+#[allow(non_camel_case_types)]
+pub struct u16;
+#[allow(non_camel_case_types)]
+pub struct u32;
+#[allow(non_camel_case_types)]
+pub struct u64;
+#[allow(non_camel_case_types)]
+pub struct u8;
+#[allow(non_camel_case_types)]
+pub struct usize;
+
+#[derive(::yew::Properties, ::std::cmp::PartialEq)]
+pub struct SimpleProps {
+    pub test: ::std::string::String,
+}
+
+pub struct Simple;
+impl ::yew::Component for Simple {
+    type Message = ();
+    type Properties = SimpleProps;
+
+    fn create(_ctx: &::yew::Context<Self>) -> Self {
+        ::std::unimplemented!()
+    }
+
+    fn view(&self, _ctx: &::yew::Context<Self>) -> ::yew::Html {
+        ::std::unimplemented!()
+    }
+}
+
+pub struct Fail;
+
+fn main() {
+    _ = ::yew::html! { <span { Fail }={ "" } /> };
+
+    let dyn_prop = || Fail;
+    _ = ::yew::html! { <span { dyn_prop() }={ "" } /> };
+
+    _ = ::yew::html! { <Simple { "test" }={ "" } /> }
+}

packages/yew-macro/tests/html_macro/dyn-prop-fail.stderr

@@ -0,0 +1,33 @@
+error: expected a valid Rust identifier
+  --> tests/html_macro/dyn-prop-fail.rs:66:34
+   |
+66 |     _ = ::yew::html! { <Simple { "test" }={ "" } /> }
+   |                                  ^^^^^^
+
+error[E0277]: the trait bound `implicit_clone::unsync::IString: From<Fail>` is not satisfied
+  --> tests/html_macro/dyn-prop-fail.rs:61:9
+   |
+61 |     _ = ::yew::html! { <span { Fail }={ "" } /> };
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<Fail>` is not implemented for `implicit_clone::unsync::IString`
+   |
+   = help: the following other types implement trait `From<T>`:
+             <implicit_clone::unsync::IString as From<&'static str>>
+             <implicit_clone::unsync::IString as From<Cow<'static, str>>>
+             <implicit_clone::unsync::IString as From<Rc<str>>>
+             <implicit_clone::unsync::IString as From<String>>
+   = note: required because of the requirements on the impl of `Into<implicit_clone::unsync::IString>` for `Fail`
+   = note: this error originates in the macro `::yew::html` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `implicit_clone::unsync::IString: From<Fail>` is not satisfied
+  --> tests/html_macro/dyn-prop-fail.rs:64:9
+   |
+64 |     _ = ::yew::html! { <span { dyn_prop() }={ "" } /> };
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<Fail>` is not implemented for `implicit_clone::unsync::IString`
+   |
+   = help: the following other types implement trait `From<T>`:
+             <implicit_clone::unsync::IString as From<&'static str>>
+             <implicit_clone::unsync::IString as From<Cow<'static, str>>>
+             <implicit_clone::unsync::IString as From<Rc<str>>>
+             <implicit_clone::unsync::IString as From<String>>
+   = note: required because of the requirements on the impl of `Into<implicit_clone::unsync::IString>` for `Fail`
+   = note: this error originates in the macro `::yew::html` (in Nightly builds, run with -Z macro-backtrace for more info)

packages/yew-macro/tests/html_macro/dyn-prop-pass.rs

@@ -0,0 +1,53 @@
+#![no_implicit_prelude]
+
+// Shadow primitives
+#[allow(non_camel_case_types)]
+pub struct bool;
+#[allow(non_camel_case_types)]
+pub struct char;
+#[allow(non_camel_case_types)]
+pub struct f32;
+#[allow(non_camel_case_types)]
+pub struct f64;
+#[allow(non_camel_case_types)]
+pub struct i128;
+#[allow(non_camel_case_types)]
+pub struct i16;
+#[allow(non_camel_case_types)]
+pub struct i32;
+#[allow(non_camel_case_types)]
+pub struct i64;
+#[allow(non_camel_case_types)]
+pub struct i8;
+#[allow(non_camel_case_types)]
+pub struct isize;
+#[allow(non_camel_case_types)]
+pub struct str;
+#[allow(non_camel_case_types)]
+pub struct u128;
+#[allow(non_camel_case_types)]
+pub struct u16;
+#[allow(non_camel_case_types)]
+pub struct u32;
+#[allow(non_camel_case_types)]
+pub struct u64;
+#[allow(non_camel_case_types)]
+pub struct u8;
+#[allow(non_camel_case_types)]
+pub struct usize;
+
+fn main() {
+    // basic example from https://htmx.org/attributes/hx-on/
+
+    // repeating attrs is not valid HTMX nor HTML,
+    // but valid html! (any checks can happen only during runtime)
+
+    // literal
+    _ = ::yew::html! { <span { "hx-on:click" }={ "alert('Clicked!')" } /> };
+    _ = ::yew::html! { <span { "hx-on:click" }={ "alert('Clicked!')" } { "hx-on:click" }={ "alert('Clicked!')" } /> };
+
+    // expr
+    let dyn_prop = || ::std::string::ToString::to_string("hx-on:click");
+    _ = ::yew::html! { <span { dyn_prop() }={ "alert('Clicked!')" } /> };
+    _ = ::yew::html! { <span { dyn_prop() }={ "alert('Clicked!')" } { dyn_prop() }={ "alert('Clicked!')" } /> };
+}