Use ignore for unsupported tests

diesel/Cargo.toml

@@ -53,10 +53,10 @@ path = "../diesel_derives"
 libsqlite3-sys = { version = ">=0.17.2, <0.32.0", optional = true, features = ["bundled_bindings"] }
 
 [target.'cfg(all(target_family = "wasm", target_os = "unknown"))'.dependencies]
-sqlite-wasm-rs = { version = ">=0.2.2, <0.3.0", optional = true }
+sqlite-wasm-rs = { version = ">=0.2.4, <0.3.0", optional = true }
 
 [target.'cfg(all(target_family = "wasm", target_os = "unknown"))'.dev-dependencies]
-# Something is dependent on it, so we use feature to override it.
+# Something is dependent on it, we use feature to override it.
 getrandom = { version = "0.2", features = ["js"] }
 wasm-bindgen-test = "0.3.49"
 

diesel_tests/tests/connection.rs

@@ -2,9 +2,12 @@ use crate::schema::*;
 use diesel::connection::BoxableConnection;
 use diesel::*;
 
+#[cfg_attr(
+    all(target_family = "wasm", target_os = "unknown"),
+    ignore = "can't sleep"
+)]
 #[diesel_test_helper::test]
 #[cfg(any(feature = "postgres", feature = "sqlite"))]
-#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 fn managing_updated_at_for_table() {
     use crate::schema_dsl::*;
     use chrono::NaiveDateTime;
@@ -79,10 +82,12 @@ fn managing_updated_at_for_table() {
     assert!(old_time < new_time);
 }
 
-/// wasm does not support `std::env::temp_dir`
+#[cfg_attr(
+    all(target_family = "wasm", target_os = "unknown"),
+    ignore = "no filesystem on this platform"
+)]
 #[diesel_test_helper::test]
 #[cfg(feature = "sqlite")]
-#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 fn strips_sqlite_url_prefix() {
     let mut path = std::env::temp_dir();
     path.push("diesel_test_sqlite.db");
@@ -99,10 +104,12 @@ fn file_uri_created_in_memory() {
     assert!(!Path::new(":memory:").exists());
 }
 
-/// wasm does not support `std::env::temp_dir`
+#[cfg_attr(
+    all(target_family = "wasm", target_os = "unknown"),
+    ignore = "no filesystem on this platform"
+)]
 #[diesel_test_helper::test]
 #[cfg(feature = "sqlite")]
-#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 fn sqlite_uri_prefix_interpreted_as_file() {
     let mut path = std::env::temp_dir();
     path.push("diesel_test_sqlite_readonly.db");