Add react-dnd-test-backend

types/react-dnd-test-backend/index.d.ts

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+// Type definitions for react-dnd-test-backend 2.5
+// Project: https://github.com/react-dnd/react-dnd#readme
+// Definitions by: Gustavo Henke <https://github.com/gustavohenke>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.6
+
+import * as ReactDnd from "react-dnd";
+
+export default class TestBackend implements ReactDnd.Backend {
+    simulateBeginDrag(sourceIds: ReactDnd.Identifier[], options?: {}): void;
+    simulatePublishDragSource(): void;
+    simulateHover(targetIds: ReactDnd.Identifier[], options?: {}): void;
+    simulateDrop(): void;
+    simulateEndDrag(): void;
+}

types/react-dnd-test-backend/react-dnd-test-backend-tests.tsx

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+import * as React from "react";
+import { ContextComponent, ContextComponentClass, DragDropContext } from "react-dnd";
+import TestBackend from "react-dnd-test-backend";
+
+const Component = DragDropContext(TestBackend)(() => <div/>);
+<Component ref={(instance: ContextComponent<{}, {}>) => {
+    const backend = instance.getManager().getBackend() as TestBackend;
+    backend.simulateBeginDrag(["1"]);
+    backend.simulateBeginDrag(["1"], { foo: "bar" });
+
+    backend.simulateHover(["2"]);
+    backend.simulateHover(["2"], { foo: "bar" });
+
+    backend.simulateDrop();
+    backend.simulateEndDrag();
+    backend.simulatePublishDragSource();
+}}/>;

types/react-dnd-test-backend/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "jsx": "react",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "react-dnd-test-backend-tests.tsx"
+    ]
+}

types/react-dnd-test-backend/tslint.json

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+{
+    "extends": "dtslint/dt.json",
+    "rules": {
+        "quotemark": [true, "double"]
+    }
+}