Add test for bad request in /school

src/test/school.js

@@ -68,5 +68,17 @@ describe('request schools', () => {
                 //res.body.result[0].should.have.property('nome_entidade');
                 done();
             })
-    })
+    });
+
+    it('should return 400 with no filters', (done) => {
+        chai.request(server)
+            .get('/api/v1/school')
+            .end((err, res) => {
+                res.should.have.status(400);
+                res.should.be.json;
+                res.body.should.have.property('error');
+                res.body.error.should.be.equal('Wrong/No filter specified');
+                done();
+            })
+    });
 });