fix(embedded_web_page): Put web page in html/ (#30)

The `acap-build` tool establishes the convention that the `html/`
and `lib/` directories in the current working directory are special and
always included. This seems convenient, so going forward the tools and
examples in this project will follow that convention.

Disable unit tests on host because it is not obvious how to implement
`html_dir`.

Makefile

@@ -219,10 +219,12 @@ target/%/$(PACKAGE)/LICENSE: apps/$(PACKAGE)/LICENSE
 # at some point we need to map one to the other. It might as well be here.
 target/aarch64/$(PACKAGE)/_envoy: target/aarch64-unknown-linux-gnu/release/$(PACKAGE)
 target/armv7hf/$(PACKAGE)/_envoy: target/thumbv7neon-unknown-linux-gnueabihf/release/$(PACKAGE)
-target/%/$(PACKAGE)/_envoy: apps/$(PACKAGE)/manifest.json apps/$(PACKAGE)/LICENSE $(wildcard apps/$(PACKAGE)/otherfiles/*)
+target/%/$(PACKAGE)/_envoy: apps/$(PACKAGE)/manifest.json apps/$(PACKAGE)/LICENSE
 	# Make sure we don't include any obsolete files in the `.eap`
 	if [ -d $(@D) ]; then rm -r $(@D); fi
 	mkdir -p $(@D)
+	if [ -d  apps/$(PACKAGE)/html ]; then cp -r apps/$(PACKAGE)/html $(@D); fi
+	if [ -d  apps/$(PACKAGE)/lib ]; then cp -r apps/$(PACKAGE)/lib $(@D); fi
 	cp -r $^ $(@D)
 	$(DOCKER_RUN) sh -c ". /opt/axis/acapsdk/environment-setup-* && acap-build --build no-build ."
 	touch $@

apps/embedded_web_page/src/main.rs

@@ -3,3 +3,25 @@
 //! All applications require a program, but for this example it doesn't need to do anything,
 //! hence the empty main function.
 fn main() {}
+
+// TODO: Figure out how to resolve paths on host
+// It is not particularly interesting for this app, but once the reverse proxy example is added it
+// becomes feasible to serve the embedded web page also when testing on host.
+#[cfg(not(target_arch = "x86_64"))]
+#[cfg(test)]
+mod tests {
+    use std::{env, path::PathBuf};
+
+    fn html_dir() -> PathBuf {
+        env::current_exe().unwrap().parent().unwrap().join("html")
+    }
+    #[test]
+    fn html_files_are_installed() {
+        assert!(html_dir().join("index.html").is_file())
+    }
+
+    #[test]
+    fn html_nested_files_are_installed() {
+        assert!(html_dir().join("css").join("main.css").is_file())
+    }
+}