diff --git a/test/unit/math/rev/prob/categorical2_test.cpp b/test/unit/math/rev/prob/categorical2_test.cpp
index d612fce0956..c799aebbd9e 100644
--- a/test/unit/math/rev/prob/categorical2_test.cpp
+++ b/test/unit/math/rev/prob/categorical2_test.cpp
@@ -5,8 +5,8 @@
 
 template <typename T_prob>
 inline void expect_propto_categorical_lpmf(unsigned int n1, T_prob theta1,
-                                    unsigned int n2, T_prob theta2,
-                                    std::string message) {
+                                           unsigned int n2, T_prob theta2,
+                                           std::string message) {
   expect_eq_diffs(stan::math::categorical_lpmf<false>(n1, theta1),
                   stan::math::categorical_lpmf<false>(n2, theta2),
                   stan::math::categorical_lpmf<true>(n1, theta1),
diff --git a/test/unit/math/rev/prob/dirichlet2_test.cpp b/test/unit/math/rev/prob/dirichlet2_test.cpp
index 4d0b0724b18..8953f180ffd 100644
--- a/test/unit/math/rev/prob/dirichlet2_test.cpp
+++ b/test/unit/math/rev/prob/dirichlet2_test.cpp
@@ -4,9 +4,11 @@
 #include <string>
 
 template <typename T_prob, typename T_prior_sample_size>
-inline void expect_propto_dirichlet_lpdf(T_prob theta, T_prior_sample_size alpha,
-                                  T_prob theta2, T_prior_sample_size alpha2,
-                                  std::string message) {
+inline void expect_propto_dirichlet_lpdf(T_prob theta,
+                                         T_prior_sample_size alpha,
+                                         T_prob theta2,
+                                         T_prior_sample_size alpha2,
+                                         std::string message) {
   expect_eq_diffs(stan::math::dirichlet_lpdf<false>(theta, alpha),
                   stan::math::dirichlet_lpdf<false>(theta2, alpha2),
                   stan::math::dirichlet_lpdf<true>(theta, alpha),
diff --git a/test/unit/math/rev/prob/inv_wishart2_test.cpp b/test/unit/math/rev/prob/inv_wishart2_test.cpp
index 005cc9cefad..dd51246d169 100644
--- a/test/unit/math/rev/prob/inv_wishart2_test.cpp
+++ b/test/unit/math/rev/prob/inv_wishart2_test.cpp
@@ -5,9 +5,9 @@
 #include <string>
 
 template <typename T_y, typename T_dof, typename T_scale>
-inline void expect_propto_inv_wishart_lpdf(T_y W1, T_dof nu1, T_scale S1, T_y W2,
-                                    T_dof nu2, T_scale S2,
-                                    std::string message) {
+inline void expect_propto_inv_wishart_lpdf(T_y W1, T_dof nu1, T_scale S1,
+                                           T_y W2, T_dof nu2, T_scale S2,
+                                           std::string message) {
   expect_eq_diffs(stan::math::inv_wishart_lpdf<false>(W1, nu1, S1),
                   stan::math::inv_wishart_lpdf<false>(W2, nu2, S2),
                   stan::math::inv_wishart_lpdf<true>(W1, nu1, S1),
diff --git a/test/unit/math/rev/prob/multi_gp2_test.cpp b/test/unit/math/rev/prob/multi_gp2_test.cpp
index c0b06738641..cb10dce05c3 100644
--- a/test/unit/math/rev/prob/multi_gp2_test.cpp
+++ b/test/unit/math/rev/prob/multi_gp2_test.cpp
@@ -8,8 +8,8 @@
 #include <string>
 
 template <typename T_y, typename T_scale, typename T_w>
-inline void expect_propto(T_y y1, T_scale sigma1, T_w w1, T_y y2, T_scale sigma2,
-                   T_w w2, std::string message = "") {
+inline void expect_propto(T_y y1, T_scale sigma1, T_w w1, T_y y2,
+                          T_scale sigma2, T_w w2, std::string message = "") {
   expect_eq_diffs(stan::math::multi_gp_lpdf<false>(y1, sigma1, w1),
                   stan::math::multi_gp_lpdf<false>(y2, sigma2, w2),
                   stan::math::multi_gp_lpdf<true>(y1, sigma1, w1),
diff --git a/test/unit/math/rev/prob/multi_gp_cholesky2_test.cpp b/test/unit/math/rev/prob/multi_gp_cholesky2_test.cpp
index 088928fa79e..bda7f3538dd 100644
--- a/test/unit/math/rev/prob/multi_gp_cholesky2_test.cpp
+++ b/test/unit/math/rev/prob/multi_gp_cholesky2_test.cpp
@@ -8,9 +8,9 @@
 #include <vector>
 
 template <typename T_y, typename T_scale, typename T_w>
-inline void expect_propto_multi_gp_cholesky_lpdf(T_y y1, T_scale L1, T_w w1, T_y y2,
-                                          T_scale L2, T_w w2,
-                                          std::string message = "") {
+inline void expect_propto_multi_gp_cholesky_lpdf(T_y y1, T_scale L1, T_w w1,
+                                                 T_y y2, T_scale L2, T_w w2,
+                                                 std::string message = "") {
   expect_eq_diffs(stan::math::multi_gp_cholesky_lpdf<false>(y1, L1, w1),
                   stan::math::multi_gp_cholesky_lpdf<false>(y2, L2, w2),
                   stan::math::multi_gp_cholesky_lpdf<true>(y1, L1, w1),
diff --git a/test/unit/math/rev/prob/multi_normal2_test.cpp b/test/unit/math/rev/prob/multi_normal2_test.cpp
index 7550c0de852..6965f89c95a 100644
--- a/test/unit/math/rev/prob/multi_normal2_test.cpp
+++ b/test/unit/math/rev/prob/multi_normal2_test.cpp
@@ -9,9 +9,9 @@
 #include <string>
 
 template <typename T_y, typename T_loc, typename T_scale>
-inline void expect_propto_multi_normal_lpdf(T_y y1, T_loc mu1, T_scale sigma1, T_y y2,
-                                     T_loc mu2, T_scale sigma2,
-                                     std::string message = "") {
+inline void expect_propto_multi_normal_lpdf(T_y y1, T_loc mu1, T_scale sigma1,
+                                            T_y y2, T_loc mu2, T_scale sigma2,
+                                            std::string message = "") {
   expect_eq_diffs(stan::math::multi_normal_lpdf<false>(y1, mu1, sigma1),
                   stan::math::multi_normal_lpdf<false>(y2, mu2, sigma2),
                   stan::math::multi_normal_lpdf<true>(y1, mu1, sigma1),
diff --git a/test/unit/math/rev/prob/multi_normal_prec2_test.cpp b/test/unit/math/rev/prob/multi_normal_prec2_test.cpp
index e4075da76b9..206df434caf 100644
--- a/test/unit/math/rev/prob/multi_normal_prec2_test.cpp
+++ b/test/unit/math/rev/prob/multi_normal_prec2_test.cpp
@@ -9,9 +9,10 @@
 #include <string>
 
 template <typename T_y, typename T_loc, typename T_scale>
-inline void expect_propto_multi_normal_prec_lpdf(T_y y1, T_loc mu1, T_scale sigma1,
-                                          T_y y2, T_loc mu2, T_scale sigma2,
-                                          std::string message = "") {
+inline void expect_propto_multi_normal_prec_lpdf(T_y y1, T_loc mu1,
+                                                 T_scale sigma1, T_y y2,
+                                                 T_loc mu2, T_scale sigma2,
+                                                 std::string message = "") {
   expect_eq_diffs(stan::math::multi_normal_prec_lpdf<false>(y1, mu1, sigma1),
                   stan::math::multi_normal_prec_lpdf<false>(y2, mu2, sigma2),
                   stan::math::multi_normal_prec_lpdf<true>(y1, mu1, sigma1),
diff --git a/test/unit/math/rev/prob/multi_student_t2_test.cpp b/test/unit/math/rev/prob/multi_student_t2_test.cpp
index fe28014fe9b..44882de0418 100644
--- a/test/unit/math/rev/prob/multi_student_t2_test.cpp
+++ b/test/unit/math/rev/prob/multi_student_t2_test.cpp
@@ -11,9 +11,10 @@
 
 template <typename T_y, typename T_dof, typename T_loc, typename T_scale>
 inline void expect_propto_multi_student_t_lpdf(T_y y1, T_dof nu1, T_loc mu1,
-                                        T_scale sigma1, T_y y2, T_dof nu2,
-                                        T_loc mu2, T_scale sigma2,
-                                        std::string message = "") {
+                                               T_scale sigma1, T_y y2,
+                                               T_dof nu2, T_loc mu2,
+                                               T_scale sigma2,
+                                               std::string message = "") {
   expect_eq_diffs(stan::math::multi_student_t_lpdf<false>(y1, nu1, mu1, sigma1),
                   stan::math::multi_student_t_lpdf<false>(y2, nu2, mu2, sigma2),
                   stan::math::multi_student_t_lpdf<true>(y1, nu1, mu1, sigma1),
diff --git a/test/unit/math/rev/prob/multinomial_test.cpp b/test/unit/math/rev/prob/multinomial_test.cpp
index 8cf11dce795..33de0f4e727 100644
--- a/test/unit/math/rev/prob/multinomial_test.cpp
+++ b/test/unit/math/rev/prob/multinomial_test.cpp
@@ -7,8 +7,8 @@
 
 template <typename T_prob>
 inline void expect_propto_multinomial(std::vector<int>& ns1, T_prob theta1,
-                               std::vector<int>& ns2, T_prob theta2,
-                               std::string message) {
+                                      std::vector<int>& ns2, T_prob theta2,
+                                      std::string message) {
   expect_eq_diffs(stan::math::multinomial_lpmf<false>(ns1, theta1),
                   stan::math::multinomial_lpmf<false>(ns2, theta2),
                   stan::math::multinomial_lpmf<true>(ns1, theta1),
diff --git a/test/unit/math/rev/prob/wishart_test.cpp b/test/unit/math/rev/prob/wishart_test.cpp
index 8f497bfd621..898eb7544c3 100644
--- a/test/unit/math/rev/prob/wishart_test.cpp
+++ b/test/unit/math/rev/prob/wishart_test.cpp
@@ -6,7 +6,8 @@
 
 template <typename T_y, typename T_dof, typename T_scale>
 inline void expect_propto_wishart_lpdf(T_y W1, T_dof nu1, T_scale S1, T_y W2,
-                                T_dof nu2, T_scale S2, std::string message) {
+                                       T_dof nu2, T_scale S2,
+                                       std::string message) {
   expect_eq_diffs(stan::math::wishart_lpdf<false>(W1, nu1, S1),
                   stan::math::wishart_lpdf<false>(W2, nu2, S2),
                   stan::math::wishart_lpdf<true>(W1, nu1, S1),