diff --git a/packages/utils/typescript/lib/__tests__/generators/schemas/global.test.js b/packages/utils/typescript/lib/__tests__/generators/schemas/global.test.js
new file mode 100644
index 0000000000..7ca6f18a1f
--- /dev/null
+++ b/packages/utils/typescript/lib/__tests__/generators/schemas/global.test.js
@@ -0,0 +1,108 @@
+'use strict';
+
+jest.mock('../../../generators/schemas/utils', () => ({
+  getSchemaInterfaceName: jest.fn(),
+}));
+
+const ts = require('typescript');
+const { get } = require('lodash/fp');
+
+const { generateGlobalDefinition } = require('../../../generators/schemas/global');
+const { getSchemaInterfaceName } = require('../../../generators/schemas/utils');
+
+const getSchemasInterfaceNode = get('body.statements[0].body.statements[0]');
+
+describe('Global', () => {
+  afterAll(() => {
+    jest.resetAllMocks();
+  });
+
+  const assertGlobalNodeStructure = node => {
+    // "declare global"
+    expect(node.kind).toBe(ts.SyntaxKind.ModuleDeclaration);
+    expect(node.modifiers).toHaveLength(1);
+    expect(node.modifiers[0].kind).toBe(ts.SyntaxKind.DeclareKeyword);
+    expect(node.name.originalKeywordKind).toBe(ts.SyntaxKind.GlobalKeyword);
+    expect(node.name.escapedText).toBe('global');
+
+    // "namespace Strapi"
+    const [strapiNamespace] = node.body.statements;
+
+    expect(strapiNamespace.kind).toBe(ts.SyntaxKind.ModuleDeclaration);
+    expect(strapiNamespace.name.kind).toBe(ts.SyntaxKind.Identifier);
+    expect(strapiNamespace.name.escapedText).toBe('Strapi');
+
+    // "interface Schemas"
+    const [schemasInterface] = strapiNamespace.body.statements;
+
+    expect(schemasInterface.kind).toBe(ts.SyntaxKind.InterfaceDeclaration);
+    expect(schemasInterface.name.escapedText).toBe('Schemas');
+  };
+
+  describe('Generate Global Definition', () => {
+    beforeEach(() => {
+      jest.resetAllMocks();
+    });
+
+    test('With empty definition', () => {
+      const definitions = [];
+
+      const globalNode = generateGlobalDefinition(definitions);
+
+      assertGlobalNodeStructure(globalNode);
+
+      expect(getSchemaInterfaceName).not.toHaveBeenCalled();
+
+      const schemasNode = getSchemasInterfaceNode(globalNode);
+
+      expect(schemasNode.members).toHaveLength(0);
+    });
+
+    test('With no definition', () => {
+      const globalNode = generateGlobalDefinition();
+
+      assertGlobalNodeStructure(globalNode);
+
+      expect(getSchemaInterfaceName).not.toHaveBeenCalled();
+
+      const schemasNode = getSchemasInterfaceNode(globalNode);
+
+      expect(schemasNode.members).toHaveLength(0);
+    });
+
+    test('With multiple definitions', () => {
+      const definitions = [
+        { schema: { uid: 'api::foo.foo' } },
+        { schema: { uid: 'api::bar.bar' } },
+        { schema: { uid: 'api::foobar.foobar' } },
+        { schema: { uid: 'default.barfoo' } },
+      ];
+
+      getSchemaInterfaceName.mockReturnValue('Placeholder');
+
+      const globalNode = generateGlobalDefinition(definitions);
+
+      assertGlobalNodeStructure(globalNode);
+
+      const schemasNode = getSchemasInterfaceNode(globalNode);
+
+      expect(schemasNode.members).toHaveLength(definitions.length);
+
+      definitions.forEach(({ schema }, index) => {
+        const { uid } = schema;
+        const node = schemasNode.members[index];
+
+        expect(node.kind).toBe(ts.SyntaxKind.PropertySignature);
+
+        expect(getSchemaInterfaceName).toHaveBeenCalledWith(uid);
+
+        expect(node.name.kind).toBe(ts.SyntaxKind.StringLiteral);
+        expect(node.name.text).toBe(uid);
+        expect(node.name.singleQuote).toBeTruthy();
+
+        expect(node.type.kind).toBe(ts.SyntaxKind.TypeReference);
+        expect(node.type.typeName.escapedText).toBe('Placeholder');
+      });
+    });
+  });
+});