Fix wasm testing

wasm-bindgen-test and wasm-bindgen need to be different versions (0.3 and 0.2,
respectively), otherwise no tests are found([1], [2]);

This also fixes the test to and ci runner to just test in the current env/tz,
thereby requiring that js_sys returns the same timezone as the host system
thinks it is, but not otherwise trying to set the TZ.

[1]: https://users.rust-lang.org/t/wasm-bindgen-test-and-no-tests-to-run/43444
[2]: rustwasm/wasm-bindgen#2123

Cargo.toml

@@ -52,7 +52,7 @@ criterion = { version = "0.3" }
 doc-comment = { version = "0.3" }
 
 [target.'cfg(all(target_arch = "wasm32", not(any(target_os = "emscripten", target_os = "wasi"))))'.dev-dependencies]
-wasm-bindgen-test = "0.2"
+wasm-bindgen-test = "0.3"
 
 [package.metadata.docs.rs]
 features = ["serde"]

ci/github.sh

@@ -91,9 +91,8 @@ test_wasm() {
 
 test_wasm_simple() {
     now=$(date +%s)
-    for tz in "${TEST_TZS[@]}"; do
-        runt env TZ="$tz" NOW="$now" wasm-pack test --node -- --features wasmbind
-    done
+    tz=$(date +%z)
+    runt env TZ="$tz" NOW="$now" wasm-pack test --node -- --features wasmbind
 }
 
 main "$@"

tests/wasm.rs

@@ -12,17 +12,27 @@ mod test {
         let local: DateTime<Local> = Local::now();
 
         // Ensure time fetched is correct
-        let actual = Utc.datetime_from_str(env!("NOW"), "%s").unwrap();
+        let actual = Utc.datetime_from_str(&env!("NOW"), "%s").unwrap();
         assert!(utc - actual < chrono::Duration::minutes(5));
 
+        let tz = env!("TZ");
+        eprintln!("testing with tz={}", tz);
+
         // Ensure offset retrieved when getting local time is correct
-        let expected_offset = match env!("TZ") {
+        let expected_offset = match tz {
             "ACST-9:30" => FixedOffset::east(19 * 30 * 60),
             "Asia/Katmandu" => FixedOffset::east(23 * 15 * 60), // No DST thankfully
-            "EST4" => FixedOffset::east(-4 * 60 * 60),
-            "UTC0" => FixedOffset::east(0),
-            _ => panic!("unexpected TZ"),
+            "EDT" | "EST4" | "-0400" => FixedOffset::east(-4 * 60 * 60),
+            "EST" | "-0500" => FixedOffset::east(-5 * 60 * 60),
+            "UTC0" | "+0000" => FixedOffset::east(0),
+            tz => panic!("unexpected TZ {}", tz),
         };
-        assert_eq!(&expected_offset, local.offset());
+        assert_eq!(
+            &expected_offset,
+            local.offset(),
+            "expected: {:?} local: {:?}",
+            expected_offset,
+            local.offset(),
+        );
     }
 }