Skip wasm testing packages that do not have wasm tests (https://github.com/enso-org/ide/pull/1832)

Original commit: 3c17eb7f28

gui/src/rust/test/Cargo.toml

@@ -7,4 +7,5 @@ edition = "2018"
 [workspace]
 
 [dependencies]
+glob = "0.3.0"
 toml = "0.5.5"

gui/src/rust/test/src/bin/test_all.rs

@@ -10,6 +10,12 @@ const PACKAGE_BLACKLIST:[&str;2] = [
     "ide/file-manager/mock-server"
 ];
 
+/// Attributes that denote WASM tests.
+const WASM_TEST_ATTRIBUTES:[&str;2] = ["#[wasm_bindgen_test]", "#[wasm_bindgen_test(async)]"];
+
+/// Subdirectories in the crate directory that contain sources for the crate.
+const SOURCE_SUBDIRECTORIES:[&str;4] = ["src", "benches", "examples", "tests"];
+
 /// Lists members of given Cargo.toml workspace.
 fn get_workspace_members(cargo_toml_root:toml::Value) -> Vec<String> {
     let workspace = cargo_toml_root.get("workspace").expect("not a workspace");
@@ -31,6 +37,27 @@ fn parse_toml(path:impl AsRef<Path>) -> toml::Value {
     data.parse().unwrap()
 }
 
+///  Check if the given line of source code is an attribute denoting wasm test.
+fn is_wasm_test_attribute(line:&str) -> bool {
+    WASM_TEST_ATTRIBUTES.contains(&line.trim())
+}
+
+/// Check if the given workspace member contains any wasm tests in the sources.
+fn has_wasm_tests(member:&str) -> bool {
+    // We go over selected subdirectories only to avoid entering into sources of other crates that
+    // are nested within this crate subtree.
+    for subdir in SOURCE_SUBDIRECTORIES {
+        let pattern = format!("{}/{}/**/*.rs", member,subdir);
+        for entry in glob::glob(&pattern).unwrap() {
+            let contents = std::fs::read_to_string(entry.unwrap()).unwrap();
+            if contents.lines().any(is_wasm_test_attribute) {
+                return true
+            }
+        }
+    }
+    false
+}
+
 /// Checks if the given member is blacklisted from running the tests.
 fn blacklisted(memeber:&str) -> bool {
     PACKAGE_BLACKLIST.contains(&memeber)
@@ -38,7 +65,7 @@ fn blacklisted(memeber:&str) -> bool {
 
 /// Checks if for the given workspace member wasm-pack test should be run.
 fn to_be_tested(member:&str) -> bool {
-    !blacklisted(member) && !is_proc_macro_crate(member)
+    has_wasm_tests(member) && !blacklisted(member) && !is_proc_macro_crate(member)
 }
 
 /// Checks if given workspace member is a proc-macro crate.
@@ -64,13 +91,13 @@ fn main() {
     let tested_members  = all_members.iter().filter(|p| to_be_tested(&p));
 
     for member in tested_members {
-        println!("Running tests for {}:", member);
-        let status = std::process::Command::new("wasm-pack")
-            .arg("test")
-            .arg(&member)
+        println!("Running tests for {}", member);
+        let mut command = std::process::Command::new("wasm-pack");
+        command.arg("test")
             .args(&wasm_pack_args)
-            .status()
-            .unwrap();
+            .arg(&member);
+        println!("{:?}",command);
+        let status = command.status().unwrap();
         if !status.success() {
             panic!("Process for {} failed!{}", member, match status.code() {
                 Some(code) => format!(" Code: {}", code),