Update incorrectly-authored test.

Author: DanielRosenwasser

tests/cases/compiler/contextualNarrowingFromUnknownToObjects.ts

@@ -5,7 +5,7 @@
 declare function keysOfEmptyObject(o: {}): string[];
 declare function keysOfNonPrimitive(o: object): string[];
 
-namespace explicitConstraints {
+namespace implicitConstraints {
     export function keyLengthsEqualUsingEmptyObjectFn<T>(a: T, b: T): [T, T] | undefined {
         if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
             return undefined;
@@ -26,7 +26,7 @@ namespace explicitConstraints {
         if (Array.isArray(a) || Array.isArray(b)) {
             return undefined;
         }
-        if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
+        if (keysOfNonPrimitive(a).length !== keysOfNonPrimitive(b).length) {
             return [a, b];
         }
         return undefined;
@@ -35,7 +35,7 @@ namespace explicitConstraints {
 
 // Explicit Constraints of 'unknown'
 namespace explicitConstraintsOfUnknown {
-    export function keyLengthsEqualUsingEmptyObjectFn<T>(a: T, b: T): [T, T] | undefined {
+    export function keyLengthsEqualUsingEmptyObjectFn<T extends unknown>(a: T, b: T): [T, T] | undefined {
         if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
             return undefined;
         }
@@ -48,14 +48,14 @@ namespace explicitConstraintsOfUnknown {
         return undefined;
     }
 
-    export function keyLengthsEqualUsingNonPrimitiveFn<T>(a: T, b: T): [T, T] | undefined {
+    export function keyLengthsEqualUsingNonPrimitiveFn<T extends unknown>(a: T, b: T): [T, T] | undefined {
         if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
             return undefined;
         }
         if (Array.isArray(a) || Array.isArray(b)) {
             return undefined;
         }
-        if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
+        if (keysOfNonPrimitive(a).length !== keysOfNonPrimitive(b).length) {
             return [a, b];
         }
         return undefined;