refactor: remove lodash dependencies & general housekeeping

__tests__/unit/core-kernel/services/actions/service-provider.test.ts

@@ -1,21 +1,13 @@
 import "jest-extended";
 
 import { Application } from "@packages/core-kernel/src/application";
-import { Container, interfaces, Identifiers } from "@packages/core-kernel/src/ioc";
+import { Container, Identifiers } from "@packages/core-kernel/src/ioc";
 import { ServiceProvider } from "@packages/core-kernel/src/services/actions";
 import { Actions } from "@packages/core-kernel/src/services/actions/actions";
 
 let app: Application;
-let container: interfaces.Container;
 
-beforeEach(() => {
-    container = new Container();
-    container.snapshot();
-
-    app = new Application(container);
-});
-
-afterEach(() => container.restore());
+beforeEach(() => (app = new Application(new Container())));
 
 describe("ActionsServiceProvider", () => {
     it(".register", async () => {

__tests__/unit/core-kernel/services/cache/service-provider.test.ts

@@ -1,27 +1,23 @@
 import "jest-extended";
 
 import { Application } from "@packages/core-kernel/src/application";
-import { Container, interfaces, Identifiers } from "@packages/core-kernel/src/ioc";
+import { Container, Identifiers } from "@packages/core-kernel/src/ioc";
 import { ServiceProvider } from "@packages/core-kernel/src/services/cache";
 import { MemoryCacheStore } from "@packages/core-kernel/src/services/cache/drivers/memory";
 
 let app: Application;
-let container: interfaces.Container;
 
-beforeEach(() => {
-    container = new Container();
-    container.snapshot();
-
-    app = new Application(container);
-});
-
-afterEach(() => container.restore());
+beforeEach(() => (app = new Application(new Container())));
 
 describe("CacheServiceProvider", () => {
     it(".register", async () => {
+        expect(app.isBound(Identifiers.CacheManager)).toBeFalse();
+        expect(app.isBound(Identifiers.CacheService)).toBeFalse();
+
         await app.resolve<ServiceProvider>(ServiceProvider).register();
 
         expect(app.isBound(Identifiers.CacheManager)).toBeTrue();
+        expect(app.isBound(Identifiers.CacheService)).toBeTrue();
         expect(app.get(Identifiers.CacheService)).toBeInstanceOf(MemoryCacheStore);
     });
 });

__tests__/unit/core-kernel/services/events/service-provider.test.ts

@@ -1,21 +1,13 @@
 import "jest-extended";
 
 import { Application } from "@packages/core-kernel/src/application";
-import { Container, interfaces, Identifiers } from "@packages/core-kernel/src/ioc";
+import { Container, Identifiers } from "@packages/core-kernel/src/ioc";
 import { ServiceProvider } from "@packages/core-kernel/src/services/events";
 import { MemoryEventDispatcher } from "@packages/core-kernel/src/services/events/drivers/memory";
 
 let app: Application;
-let container: interfaces.Container;
 
-beforeEach(() => {
-    container = new Container();
-    container.snapshot();
-
-    app = new Application(container);
-});
-
-afterEach(() => container.restore());
+beforeEach(() => (app = new Application(new Container())));
 
 describe("EventDispatcherServiceProvider", () => {
     it(".register", async () => {

__tests__/unit/core-kernel/services/filesystem/service-provider.test.ts

@@ -1,21 +1,13 @@
 import "jest-extended";
 
 import { Application } from "@packages/core-kernel/src/application";
-import { Container, interfaces, Identifiers } from "@packages/core-kernel/src/ioc";
+import { Container, Identifiers } from "@packages/core-kernel/src/ioc";
 import { ServiceProvider } from "@packages/core-kernel/src/services/filesystem";
 import { LocalFilesystem } from "@packages/core-kernel/src/services/filesystem/drivers/local";
 
 let app: Application;
-let container: interfaces.Container;
 
-beforeEach(() => {
-    container = new Container();
-    container.snapshot();
-
-    app = new Application(container);
-});
-
-afterEach(() => container.restore());
+beforeEach(() => (app = new Application(new Container())));
 
 describe("FilesystemServiceProvider", () => {
     it(".register", async () => {

__tests__/unit/core-kernel/services/mixins/service-provider.test.ts

@@ -1,20 +1,13 @@
 import "jest-extended";
 
 import { Application } from "@packages/core-kernel/src/application";
-import { Container, interfaces, Identifiers } from "@packages/core-kernel/src/ioc";
+import { Container, Identifiers } from "@packages/core-kernel/src/ioc";
 import { ServiceProvider } from "@packages/core-kernel/src/services/mixins";
+import { MixinService } from "@packages/core-kernel/src/services/mixins/mixins";
 
 let app: Application;
-let container: interfaces.Container;
 
-beforeEach(() => {
-    container = new Container();
-    container.snapshot();
-
-    app = new Application(container);
-});
-
-afterEach(() => container.restore());
+beforeEach(() => (app = new Application(new Container())));
 
 describe("MixinServiceProvider", () => {
     it(".register", async () => {
@@ -23,5 +16,6 @@ describe("MixinServiceProvider", () => {
         await app.resolve<ServiceProvider>(ServiceProvider).register();
 
         expect(app.isBound(Identifiers.MixinService)).toBeTrue();
+        expect(app.get(Identifiers.MixinService)).toBeInstanceOf(MixinService);
     });
 });

__tests__/unit/core-kernel/services/queue/service-provider.test.ts

@@ -1,21 +1,13 @@
 import "jest-extended";
 
 import { Application } from "@packages/core-kernel/src/application";
-import { Container, interfaces, Identifiers } from "@packages/core-kernel/src/ioc";
+import { Container, Identifiers } from "@packages/core-kernel/src/ioc";
 import { ServiceProvider } from "@packages/core-kernel/src/services/queue";
 import { MemoryQueue } from "@packages/core-kernel/src/services/queue/drivers/memory";
 
 let app: Application;
-let container: interfaces.Container;
 
-beforeEach(() => {
-    container = new Container();
-    container.snapshot();
-
-    app = new Application(container);
-});
-
-afterEach(() => container.restore());
+beforeEach(() => (app = new Application(new Container())));
 
 describe("QueueServiceProvider", () => {
     it(".register", async () => {

__tests__/unit/core-kernel/services/schedule/service-provider.test.ts

@@ -1,21 +1,13 @@
 import "jest-extended";
 
 import { Application } from "@packages/core-kernel/src/application";
-import { Container, interfaces, Identifiers } from "@packages/core-kernel/src/ioc";
+import { Container, Identifiers } from "@packages/core-kernel/src/ioc";
 import { ServiceProvider } from "@packages/core-kernel/src/services/schedule";
 import { Schedule } from "@packages/core-kernel/src/services/schedule/schedule";
 
 let app: Application;
-let container: interfaces.Container;
 
-beforeEach(() => {
-    container = new Container();
-    container.snapshot();
-
-    app = new Application(container);
-});
-
-afterEach(() => container.restore());
+beforeEach(() => (app = new Application(new Container())));
 
 describe("LogServiceProvider", () => {
     it(".register", async () => {

__tests__/unit/core-kernel/services/validation/service-provider.test.ts

@@ -1,21 +1,13 @@
 import "jest-extended";
 
 import { Application } from "@packages/core-kernel/src/application";
-import { Container, interfaces, Identifiers } from "@packages/core-kernel/src/ioc";
+import { Container, Identifiers } from "@packages/core-kernel/src/ioc";
 import { ServiceProvider } from "@packages/core-kernel/src/services/validation";
 import { JoiValidator } from "@packages/core-kernel/src/services/validation/drivers/joi";
 
 let app: Application;
-let container: interfaces.Container;
 
-beforeEach(() => {
-    container = new Container();
-    container.snapshot();
-
-    app = new Application(container);
-});
-
-afterEach(() => container.restore());
+beforeEach(() => (app = new Application(new Container())));
 
 describe("ValidationServiceProvider", () => {
     it(".register", async () => {

__tests__/unit/core-kernel/utils/delegate-calculator.test.ts

@@ -1,42 +1,68 @@
 import "jest-extended";
 
-import { Wallets } from "@arkecosystem/core-state";
+import { app } from "@arkecosystem/core-kernel";
+import { Identifiers } from "@packages/core-kernel/src/ioc";
+import { AttributeService } from "@packages/core-kernel/src/services/attributes";
+import { Wallet } from "@packages/core-state/src/wallets";
 import { Managers, Utils } from "@arkecosystem/crypto";
 import { calculateApproval, calculateForgedTotal } from "@packages/core-kernel/src/utils/delegate-calculator";
 
-let delegate: Wallets.Wallet;
-let attributes;
+beforeAll(() => {
+    // @fixme: we modify the real app instance instead of using a container and snapshot.
+    // There are some context issues that result in "core-state" resolving a different container
+    // then we initially specify in the test so those bindings would not be available.
 
-beforeEach(() => {
-    attributes = {
-        producedBlocks: 0,
-    };
+    app.bind<AttributeService>(Identifiers.AttributeService)
+        .to(AttributeService)
+        .inSingletonScope();
 
-    delegate = new Wallets.Wallet("D61xc3yoBQDitwjqUspMPx1ooET6r1XLt7");
-    delegate.setAttribute("delegate", attributes);
+    app.get<AttributeService>(Identifiers.AttributeService).set("wallet");
+
+    app.get<AttributeService>(Identifiers.AttributeService)
+        .get("wallet")
+        .bind("delegate");
+
+    app.get<AttributeService>(Identifiers.AttributeService)
+        .get("wallet")
+        .bind("delegate.voteBalance");
 
     Managers.configManager.set("genesisBlock.totalAmount", 1000000 * 1e8);
 });
 
 describe("Delegate Calculator", () => {
     describe("calculateApproval", () => {
         it("should calculate correctly with a height", () => {
-            attributes.voteBalance = Utils.BigNumber.make(10000 * 1e8);
+            const delegate = new Wallet("D61xc3yoBQDitwjqUspMPx1ooET6r1XLt7");
+
+            delegate.setAttribute("delegate", {
+                producedBlocks: 0,
+                voteBalance: Utils.BigNumber.make(10000 * 1e8),
+            });
 
             expect(calculateApproval(delegate, 1)).toBe(1);
         });
 
         it("should calculate correctly with 2 decimals", () => {
-            attributes.voteBalance = Utils.BigNumber.make(16500 * 1e8);
+            const delegate = new Wallet("D61xc3yoBQDitwjqUspMPx1ooET6r1XLt7");
+
+            delegate.setAttribute("delegate", {
+                producedBlocks: 0,
+                voteBalance: Utils.BigNumber.make(16500 * 1e8),
+            });
 
             expect(calculateApproval(delegate, 1)).toBe(1.65);
         });
     });
 
     describe("calculateForgedTotal", () => {
         it("should calculate correctly", () => {
-            attributes.forgedFees = Utils.BigNumber.make(10);
-            attributes.forgedRewards = Utils.BigNumber.make(100);
+            const delegate = new Wallet("D61xc3yoBQDitwjqUspMPx1ooET6r1XLt7");
+
+            delegate.setAttribute("delegate", {
+                producedBlocks: 0,
+                forgedFees: Utils.BigNumber.make(10),
+                forgedRewards: Utils.BigNumber.make(100),
+            });
 
             expect(calculateForgedTotal(delegate)).toBe("110");
         });