diff --git a/R/setup_address_fields.R b/R/setup_address_fields.R
index 4cde5b6..9bf0cf6 100644
--- a/R/setup_address_fields.R
+++ b/R/setup_address_fields.R
@@ -75,10 +75,7 @@ setup_address_fields <- function(logradouro = NULL,
 
 error_null_address_fields <- function() {
   geocodebr_error(
-    paste0(
-      "At least one of {.fn address_fields_const} ",
-      "arguments must not be {.code NULL}."
-    ),
+    "At least one of the arguments must not be {.code NULL}.",
     call = rlang::caller_env()
   )
 }
diff --git a/man/setup_address_fields.Rd b/man/setup_address_fields.Rd
index 6a9efd0..8af2cc9 100644
--- a/man/setup_address_fields.Rd
+++ b/man/setup_address_fields.Rd
@@ -1,5 +1,5 @@
 % Generated by roxygen2: do not edit by hand
-% Please edit documentation in R/address_fields_const.R
+% Please edit documentation in R/setup_address_fields.R
 \name{setup_address_fields}
 \alias{setup_address_fields}
 \title{Specify the columns describing the address fields}
diff --git a/tests/testthat/_snaps/setup_address_fields.md b/tests/testthat/_snaps/setup_address_fields.md
new file mode 100644
index 0000000..5fa95a0
--- /dev/null
+++ b/tests/testthat/_snaps/setup_address_fields.md
@@ -0,0 +1,8 @@
+# errors when all fields are NULL
+
+    Code
+      tester()
+    Condition <geocodebr_error_null_address_fields>
+      Error in `setup_address_fields()`:
+      ! At least one of the arguments must not be `NULL`.
+
diff --git a/tests/testthat/test-setup_address_fields.R b/tests/testthat/test-setup_address_fields.R
new file mode 100644
index 0000000..0834bb1
--- /dev/null
+++ b/tests/testthat/test-setup_address_fields.R
@@ -0,0 +1,74 @@
+tester <- function(logradouro = NULL,
+                   numero = NULL,
+                   complemento = NULL,
+                   cep = NULL,
+                   bairro = NULL,
+                   municipio = NULL,
+                   estado = NULL) {
+  setup_address_fields(
+    logradouro,
+    numero,
+    complemento,
+    cep,
+    bairro,
+    municipio,
+    estado
+  )
+}
+
+test_that("errors with incorrect input", {
+  expect_error(tester(logradouro = 1))
+  expect_error(tester(logradouro = c("aaa", "bbb")))
+
+  expect_error(tester(numero = 1))
+  expect_error(tester(numero = c("aaa", "bbb")))
+
+  expect_error(tester(complemento = 1))
+  expect_error(tester(complemento = c("aaa", "bbb")))
+
+  expect_error(tester(cep = 1))
+  expect_error(tester(cep = c("aaa", "bbb")))
+
+  expect_error(tester(bairro = 1))
+  expect_error(tester(bairro = c("aaa", "bbb")))
+
+  expect_error(tester(municipio = 1))
+  expect_error(tester(municipio = c("aaa", "bbb")))
+
+  expect_error(tester(estado = 1))
+  expect_error(tester(estado = c("aaa", "bbb")))
+})
+
+test_that("errors when all fields are NULL", {
+  expect_error(tester(), class = "geocodebr_error_null_address_fields")
+
+  expect_snapshot(tester(), error = TRUE, cnd_class = TRUE)
+})
+
+test_that("returns a character vector", {
+  expect_identical(
+    tester(
+      logradouro = "Nome_logradouro",
+      numero = "Numero",
+      complemento = "Comp",
+      cep = "CEP",
+      bairro = "Bairro",
+      municipio = "Cidade",
+      estado = "UF"
+    ),
+    c(
+      logradouro = "Nome_logradouro",
+      numero = "Numero",
+      complemento = "Comp",
+      cep = "CEP",
+      bairro = "Bairro",
+      municipio = "Cidade",
+      estado = "UF"
+    )
+  )
+
+  expect_identical(
+    tester(logradouro = "oi", numero = "ola"),
+    c(logradouro = "oi", numero = "ola")
+  )
+})