Add more and unify tests for absent object cases

- Unify test data for nonexistence of an object/string and collection.
- Introduce more test through adding missing test data to existing tests.
- Improve logic for checking absence of values to match tests.
- Add missing tests for absent value validation.
- Update documentation to include shared test functionality.

tests/unit/stubs/PipeFactoryStub.ts

@@ -14,7 +14,7 @@ export class PipeFactoryStub implements IPipeFactory {
 
   public withPipe(pipe: IPipe) {
     if (!pipe) {
-      throw new Error('undefined pipe');
+      throw new Error('missing pipe');
     }
     this.pipes.push(pipe);
     return this;