test: failing case for shadowed namespace in .d.ts

tests/files/typescript-declare-nested-shadowed.d.ts

@@ -0,0 +1,16 @@
+declare namespace foo {
+  interface SomeInterface {
+    a: string;
+  }
+}
+
+declare namespace foo.bar {
+  interface SomeOtherInterface {
+    b: string;
+  }
+
+  function MyFunction();
+}
+
+declare const foo: foo.SomeInterface;
+export = foo;

tests/src/rules/namespace.js

@@ -156,6 +156,18 @@ const valid = [
       },
     }),
 
+    test({
+      code: `
+        import * as foo from "./typescript-declare-nested-shadowed"
+        console.log(foo.a)
+      `,
+      parser,
+      settings: {
+        'import/parsers': { [parser]: ['.ts'] },
+        'import/resolver': { 'eslint-import-resolver-typescript': true },
+      },
+    }),
+
     test({
       code: `import { foobar } from "./typescript-declare-interface"`,
       parser,