Bundler (#473)

* refactor bundler
* enable unit test

bundler/java/java_test.go

@@ -0,0 +1,155 @@
+package java
+
+import (
+	"io/ioutil"
+	"log"
+	"os"
+	"reflect"
+	"testing"
+
+	"github.com/metrue/fx/utils"
+)
+
+func TestJavaBundler(t *testing.T) {
+	t.Run("Scaffold", func(t *testing.T) {
+		outputDir, err := ioutil.TempDir("", "fx_java")
+		if err != nil {
+			log.Fatal(err)
+		}
+		defer os.RemoveAll(outputDir)
+
+		java := New()
+		if err := java.Scaffold(outputDir); err != nil {
+			t.Fatal(err)
+		}
+
+		diff, _, _, err := utils.Diff(outputDir, "./assets")
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		if diff {
+			t.Fatalf("%s is not equal with %s", outputDir, "./assets")
+		}
+	})
+
+	t.Run("BundleSingleFunc", func(t *testing.T) {
+		fd, err := ioutil.TempFile("", "fx_func_*.java")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer os.Remove(fd.Name())
+
+		content := `package fx;
+
+import io.javalin.Javalin;
+import org.json.JSONObject;
+
+public class app {
+    public static void main(String[] args) {
+        Javalin app = Javalin.start(3000);
+        Fx handler = new Fx();
+        app.post("/", ctx -> {
+            JSONObject obj = new JSONObject(ctx.body());
+            ctx.result(""+handler.handle(obj));
+        });
+    }
+}
+		`
+		err = ioutil.WriteFile(fd.Name(), []byte(content), 0666)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		outputDir, err := ioutil.TempDir("", "fx_java")
+		if err != nil {
+			log.Fatal(err)
+		}
+		defer os.RemoveAll(outputDir)
+
+		java := New()
+		if err := java.Bundle(outputDir, fd.Name()); err != nil {
+			t.Fatal(err)
+		}
+
+		diff, pre, cur, err := utils.Diff("./assets", outputDir)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		if !diff {
+			t.Fatalf("handle functino should be changed")
+		}
+
+		if !reflect.DeepEqual(cur, []byte(content)) {
+			t.Fatalf("it should be %s but got %s", content, cur)
+		}
+
+		preHandleFunc, err := ioutil.ReadFile("./assets/src/main/java/fx/Fx.java")
+		if err != nil {
+			t.Fatal(err)
+		}
+		if !reflect.DeepEqual(pre, preHandleFunc) {
+			{
+			}
+			t.Fatalf("it should get %s but got %s", preHandleFunc, pre)
+		}
+	})
+
+	t.Run("BundleFuncAndDeps", func(t *testing.T) {
+		fd, err := ioutil.TempFile("", "fx_func_*.js")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer os.Remove(fd.Name())
+
+		content, err := ioutil.ReadFile("./assets/src/main/java/fx/Fx.java")
+		if err != nil {
+			t.Fatal(err)
+		}
+		err = ioutil.WriteFile(fd.Name(), content, 0666)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		addFunc := `
+module.exports = (a, b) => a+b
+  `
+		addFd, err := ioutil.TempFile("", "fx_add_func_*.js")
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		err = ioutil.WriteFile(addFd.Name(), []byte(addFunc), 0644)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		outputDir, err := ioutil.TempDir("", "fx_java")
+		if err != nil {
+			log.Fatal(err)
+		}
+		defer os.RemoveAll(outputDir)
+
+		java := New()
+		if err := java.Bundle(outputDir, fd.Name(), addFd.Name()); err != nil {
+			t.Fatal(err)
+		}
+
+		diff, pre, cur, err := utils.Diff("./assets", outputDir)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		if !diff {
+			t.Fatalf("handle functino should be changed")
+		}
+
+		if !reflect.DeepEqual(cur, []byte(addFunc)) {
+			t.Fatalf("it should be %s but got %s", content, cur)
+		}
+		if pre != nil {
+			t.Fatal(pre)
+		}
+	})
+}