5 files changed, 99 insertions, 1 deletions
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b257115..c0be05c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -56,3 +56,25 @@ jobs:
         with:
           command: test
 
+  test_wasm:
+    name: Run wasm tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+    steps:
+      - name: Checkout branch
+        uses: actions/checkout@master
+        with:
+          submodules: true
+      - name: Setup Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - name: Install wasm-pack
+        run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+      - name: Run tests
+        run: wasm-pack test serde_dhall --node
diff --git a/Cargo.lock b/Cargo.lock
index 977d701..0fa3c4d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -124,6 +124,15 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "console_error_panic_hook"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "core-foundation"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -259,6 +268,11 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "futures"
+version = "0.1.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "futures-channel"
 version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -996,6 +1010,11 @@ dependencies = [
 ]
 
 [[package]]
+name = "scoped-tls"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "security-framework"
 version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1071,6 +1090,7 @@ dependencies = [
  "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "version-sync 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-test 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1388,6 +1408,18 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-futures"
+version = "0.3.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.36 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
 version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
@@ -1424,6 +1456,29 @@ version = "0.2.59"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "wasm-bindgen-test"
+version = "0.2.50"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "console_error_panic_hook 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scoped-tls 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-futures 0.3.27 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-test-macro 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "wasm-bindgen-test-macro"
+version = "0.2.50"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "web-sys"
 version = "0.3.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1504,6 +1559,7 @@ dependencies = [
 "checksum bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)" = "130aac562c0dd69c56b3b1cc8ffd2e17be31d0b6c25b61c96b76231aa23e39e1"
 "checksum cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)" = "95e28fa049fda1c330bcf9d723be7663a899c4679724b34c81e9f5a326aab8cd"
 "checksum cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
+"checksum console_error_panic_hook 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "b8d976903543e0c48546a91908f21588a680a8c8f984df9a5d69feccb2b2a211"
 "checksum core-foundation 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "57d24c7a13c43e870e37c1556b74555437870a04514f7685f5b354e090567171"
 "checksum core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b3a71ab494c0b5b860bdc8407ae08978052417070c2ced38573a9157ad75b8ac"
 "checksum ctor 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "47c5e5ac752e18207b12e16b10631ae5f7f68f8805f335f9b817ead83d9ffce1"
@@ -1519,6 +1575,7 @@ dependencies = [
 "checksum foreign-types-shared 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
+"checksum futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)" = "1b980f2816d6ee8673b6517b52cb0e808a180efc92e5c19d02cdda79066703ef"
 "checksum futures-channel 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f366ad74c28cca6ba456d95e6422883cfb4b252a83bed929c83abfdbbf2967d5"
 "checksum futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "59f5fff90fd5d971f936ad674802482ba441b6f09ba5e15fd8b39145582ca399"
 "checksum futures-io 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "de27142b013a8e869c14957e6d2edeef89e97c289e69d042ee3a49acd8b51789"
@@ -1603,6 +1660,7 @@ dependencies = [
 "checksum ryu 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "535622e6be132bccd223f4bb2b8ac8d53cda3c7a6394944d3b2b33fb974f9d76"
 "checksum same-file 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
 "checksum schannel 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "507a9e6e8ffe0a4e0ebb9a10293e62fdf7657c06f1b8bb07a8fcf697d2abf295"
+"checksum scoped-tls 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ea6a9290e3c9cf0f18145ef7ffa62d68ee0bf5fcd651017e586dc7fd5da448c2"
 "checksum security-framework 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "97bbedbe81904398b6ebb054b3e912f99d55807125790f3198ac990d98def5b0"
 "checksum security-framework-sys 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "06fd2f23e31ef68dd2328cc383bd493142e46107a3a0e24f7d734e3f3b80fe4c"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
@@ -1648,10 +1706,13 @@ dependencies = [
 "checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 "checksum wasm-bindgen 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)" = "3557c397ab5a8e347d434782bcd31fc1483d927a6826804cec05cc792ee2519d"
 "checksum wasm-bindgen-backend 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)" = "e0da9c9a19850d3af6df1cb9574970b566d617ecfaf36eb0b706b6f3ef9bd2f8"
+"checksum wasm-bindgen-futures 0.3.27 (registry+https://github.com/rust-lang/crates.io-index)" = "83420b37346c311b9ed822af41ec2e82839bfe99867ec6c54e2da43b7538771c"
 "checksum wasm-bindgen-futures 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)" = "457414a91863c0ec00090dba537f88ab955d93ca6555862c29b6d860990b8a8a"
 "checksum wasm-bindgen-macro 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)" = "0f6fde1d36e75a714b5fe0cffbb78978f222ea6baebb726af13c78869fdb4205"
 "checksum wasm-bindgen-macro-support 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)" = "25bda4168030a6412ea8a047e27238cadf56f0e53516e1e83fec0a8b7c786f6d"
 "checksum wasm-bindgen-shared 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)" = "fc9f36ad51f25b0219a3d4d13b90eb44cd075dff8b6280cca015775d7acaddd8"
+"checksum wasm-bindgen-test 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)" = "a2d9693b63a742d481c7f80587e057920e568317b2806988c59cd71618bc26c1"
+"checksum wasm-bindgen-test-macro 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)" = "0789dac148a8840bbcf9efe13905463b733fa96543bfbf263790535c11af7ba5"
 "checksum web-sys 0.3.36 (registry+https://github.com/rust-lang/crates.io-index)" = "721c6263e2c66fd44501cc5efbfa2b7dfa775d13e4ea38c46299646ed1f9c70a"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
 "checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
diff --git a/serde_dhall/Cargo.toml b/serde_dhall/Cargo.toml
index 1b66aa1..05a7255 100644
--- a/serde_dhall/Cargo.toml
+++ b/serde_dhall/Cargo.toml
@@ -17,5 +17,8 @@ dhall_proc_macros = { version = "= 0.5.0", path = "../dhall_proc_macros" }
 doc-comment = "0.3"
 url = "2.1"
 
+[target.'cfg(target_arch = "wasm32")'.dev-dependencies]
+wasm-bindgen-test = "0.2"
+
 [dev-dependencies]
 version-sync = "0.8"
diff --git a/serde_dhall/tests/de.rs b/serde_dhall/tests/de.rs
index 1932e26..a418563 100644
--- a/serde_dhall/tests/de.rs
+++ b/serde_dhall/tests/de.rs
@@ -21,7 +21,7 @@ fn test_de_typed() {
     assert_eq!(parse::<f32>("1.0"), 1.0);
 
     assert_eq!(parse::<String>(r#""foo""#), "foo".to_owned());
-    assert_eq!(parse::<Vec<u64>>("[] : List Natural"), vec![]);
+    assert_eq!(parse::<Vec<u64>>("[] : List Natural"), <Vec<u64>>::new());
     assert_eq!(parse::<Vec<u64>>("[1, 2]"), vec![1, 2]);
     assert_eq!(parse::<Option<u64>>("None Natural"), None);
     assert_eq!(parse::<Option<u64>>("Some 1"), Some(1));
diff --git a/serde_dhall/tests/wasm.rs b/serde_dhall/tests/wasm.rs
new file mode 100644
index 0000000..c719d84
--- /dev/null
+++ b/serde_dhall/tests/wasm.rs
@@ -0,0 +1,12 @@
+#![cfg(target_arch = "wasm32")]
+use wasm_bindgen_test::*;
+
+use serde_dhall::{from_str, FromDhall, StaticType};
+
+#[wasm_bindgen_test]
+fn test() {
+    fn parse<T: FromDhall + StaticType>(s: &str) -> T {
+        from_str(s).static_type_annotation().parse().unwrap()
+    }
+    assert_eq!(parse::<Vec<u64>>("[1, 2]"), vec![1, 2]);
+}