[WIP]test: add wasm test

makefile

@@ -37,6 +37,7 @@ build-go: ## build from current commit using just go
 wasm: ## build wasm binary
 	@echo Build wasm binary
 	@go generate ./wasm/wasm.go
+	@tar -czf ./wasm/kuneiform_wasm.tar.gz -C ./wasm/ kuneiform.wasm
 
 release: ## release
 	@# need configure github token
@@ -45,3 +46,7 @@ release: ## release
 
 test: ## run tests
 	@go test -v ./kfparser/ -count=1
+	@make test-wasm
+
+test-wasm: ## run wasm tests
+	@GOOS=js GOARCH=wasm go test -v -exec="$$(go env GOROOT)/misc/wasm/go_js_wasm_exec" ./wasm/ -count=1

wasm/.gitignore

@@ -1 +1,2 @@
-*.wasm
+*.wasm
+*.tar.gz

wasm/testdata/all_features.golden

@@ -0,0 +1,57 @@
+{
+  "owner": "",
+  "name": "td1",
+  "tables": [
+    {
+      "name": "tt1",
+      "columns": [
+        {
+          "name": "tc1",
+          "type": "int"
+        }
+      ]
+    }
+  ],
+  "actions": [
+    {
+      "name": "act1",
+      "inputs": [
+        "$var1"
+      ],
+      "public": false,
+      "mutability": "update",
+      "auxiliaries": null,
+      "statements": [
+        "select * from tt1 where tc1 = $var1;"
+      ]
+    },
+    {
+      "name": "init",
+      "inputs": null,
+      "public": false,
+      "mutability": "update",
+      "auxiliaries": null,
+      "statements": [
+        "act1(1);",
+        "$v=ext1.call(@caller);",
+        "insert into tt1 values ($v);"
+      ]
+    }
+  ],
+  "extensions": [
+    {
+      "name": "a_ext",
+      "config": [
+        {
+          "argument": "addr",
+          "value": "'0x0000'"
+        },
+        {
+          "argument": "seed",
+          "value": "3"
+        }
+      ],
+      "alias": "ext1"
+    }
+  ]
+}

wasm/testdata/all_features.kf

@@ -0,0 +1,14 @@
+database td1;
+use a_ext{addr: '0x0000', seed: 3} as ext1;
+
+table tt1 { tc1 int }
+
+action act1($var1) private {
+    select * from tt1 where tc1 = $var1;
+}
+
+init() {
+    act1(1);
+    $v = ext1.call(@caller);
+    insert into tt1 values ($v);
+}

wasm/wasm_test.go

@@ -0,0 +1,75 @@
+//go:build js && wasm
+
+package main
+
+import (
+	"flag"
+	"io"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+var (
+	update = flag.Bool("update", false, "update the golden files of this test")
+)
+
+var testDataDir = "testdata"
+
+func goldenValue(t *testing.T, goldenFile string, actual string, update bool) string {
+	t.Helper()
+	goldenPath := filepath.Join(".", testDataDir, goldenFile+".golden")
+
+	f, err := os.OpenFile(goldenPath, os.O_RDWR|os.O_CREATE, 0666)
+	defer f.Close()
+
+	if update {
+		_, err := f.WriteString(actual)
+		if err != nil {
+			t.Fatalf("Error writing to file %s: %s", goldenPath, err)
+		}
+
+		return actual
+	}
+
+	content, err := io.ReadAll(f)
+	if err != nil {
+		t.Fatalf("Error opening file %s: %s", goldenPath, err)
+	}
+	return string(content)
+}
+
+func TestParse(t *testing.T) {
+	// refer: https://github.com/golang/go/wiki/WebAssembly#executing-webassembly-with-nodejs
+
+	// TODO: refactor, this method should also works for ../kfparser/parser_test.go
+	// testdata directory should be shared between wasm and kfparser tests
+	tests := []struct {
+		name   string
+		target string
+	}{
+		{
+			name:   "all_features",
+			target: "all_features",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			kfPath := filepath.Join(".", testDataDir, tt.target+".kf")
+
+			kfDef, err := os.ReadFile(kfPath)
+			require.NoError(t, err)
+
+			got, err := parse(string(kfDef))
+			require.NoError(t, err)
+
+			want := goldenValue(t, tt.target, got, *update)
+
+			assert.Equal(t, want, got)
+		})
+	}
+}