diff --git a/tests/testEOS.c b/tests/testEOS.c
deleted file mode 100644
index 097e4db451455d4a4e72ebdd72faf0ee729fe5bc..0000000000000000000000000000000000000000
--- a/tests/testEOS.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/*******************************************************************************
- * This file is part of SWIFT.
- * Copyright (c) 2012 Pedro Gonnet (pedro.gonnet@durham.ac.uk),
- *                    Matthieu Schaller (matthieu.schaller@durham.ac.uk)
- *               2018 Jacob Kegerreis (jacob.kegerreis@durham.ac.uk)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- ******************************************************************************/
-
-/* Config parameters. */
-#include "../config.h"
-
-/* Some standard headers. */
-#include <fenv.h>
-#include <float.h>
-#include <limits.h>
-#include <math.h>
-#include <pthread.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-/* Conditional headers. */
-#ifdef HAVE_LIBZ
-#include <zlib.h>
-#endif
-
-/* Local headers. */
-#include "equation_of_state.h"
-#include "swift.h"
-
-/* Engine policy flags. */
-#ifndef ENGINE_POLICY
-#define ENGINE_POLICY engine_policy_none
-#endif
-
-/**
- * @brief Write a list of densities, energies, and resulting pressures to file
- *  from an equation of state.
- *
- * So far only has the Hubbard & MacFarlane (1980) equations of state.
- *
- * Sys args:
- *      mat_id | int | Material ID, see equation_of_state.h for the options.
- *          Default: 21 (= HM80_ice).
- *
- *      do_output | int | Set 1 to write the output file of rho, u, P values,
- *          set 0 for no output. Default: 0.
- *
- * Output text file contains:
- *  header
- *  num_rho  num_u  mat_id                      # Header info
- *  rho_0   rho_1   rho_2   ...   rho_num_rho   # Array of densities, rho
- *  u_0     u_1     u_2     ...   u_num_u       # Array of energies, u
- *  P_0_0   P_0_1   ...     P_0_num_u           # Array of pressures, P(rho, u)
- *  P_1_0   ...     ...     P_1_num_u
- *  ...     ...     ...     ...
- *  P_num_rho_0     ...     P_num_rho_num_u
- *
- */
-
-int main(int argc, char *argv[]) {
-  int mat_id, do_output;
-  struct HM80_params mat;
-  float rho, log_rho, log_u, P;
-  int num_rho, num_u;
-  struct unit_system us;
-  const struct phys_const *phys_const = 0;  // Unused placeholder
-  const struct swift_params *params = 0;    // Unused placeholder
-
-  // Check the number of system arguments and set defaults if not provided
-  switch (argc) {
-    case 1:
-      // Default both
-      mat_id = HM80_ice;
-      do_output = 0;
-      break;
-
-    case 2:
-      // Read mat_id, default do_output
-      mat_id = atoi(argv[1]);
-      do_output = 0;
-      break;
-
-    case 3:
-      // Read both
-      mat_id = atoi(argv[1]);
-      do_output = atoi(argv[2]);
-      break;
-
-    default:
-      error("Invalid number of system arguments!\n");
-      mat_id = HM80_ice;  // Ignored, just here to keep the compiler happy
-      do_output = 0;
-  };
-
-  /* Greeting message */
-  printf("This is %s\n", package_description());
-
-  // Select the material parameters
-  switch (mat_id) {
-    case HM80_HHe:
-      printf("HM80_HHe \n");
-      set_HM80_HHe(&mat);
-      load_HM80_table(&mat, HM80_HHe_table_file);
-      break;
-
-    case HM80_ice:
-      printf("HM80_ice \n");
-      set_HM80_ice(&mat);
-      load_HM80_table(&mat, HM80_ice_table_file);
-      break;
-
-    case HM80_rock:
-      printf("HM80_rock \n");
-      set_HM80_rock(&mat);
-      load_HM80_table(&mat, HM80_rock_table_file);
-      break;
-
-    default:
-      error("Unknown material ID! mat_id = %d", mat_id);
-      set_HM80_rock(&mat);  // Ignored, just here to keep the compiler happy
-      load_HM80_table(&mat, HM80_rock_table_file);
-  };
-
-  // Convert to internal units
-  units_init(&us, 5.9724e27, 6.3710e8, 1, 1, 1);
-  convert_units_HM80(&mat, &us);
-
-  eos_init(&eos, phys_const, &us, params);
-
-  // Output file
-  FILE *f = fopen("testEOS_rho_u_P.txt", "w");
-  if (f == NULL) {
-    printf("Could not open output file!\n");
-    exit(EXIT_FAILURE);
-  }
-
-  num_rho = (mat.log_rho_max - mat.log_rho_min) / mat.log_rho_step;
-  num_u = (mat.log_u_max - mat.log_u_min) / mat.log_u_step;
-  if (do_output == 1) {
-    fprintf(f, "Density  Sp.Int.Energy  mat_id \n");
-    fprintf(f, "%d      %d            %d \n", num_rho, num_u, mat_id);
-  }
-
-  // Arrays of densities and energies
-  float A1_rho[num_rho], A1_u[num_u];
-
-  log_rho = mat.log_rho_min;
-  for (int i = 0; i < num_rho; i++) {
-    A1_rho[i] = exp(log_rho);
-    log_rho += mat.log_rho_step;
-
-    if (do_output == 1)
-      fprintf(f, "%.6e ",
-              A1_rho[i] * units_cgs_conversion_factor(&us, UNIT_CONV_DENSITY));
-  }
-
-  if (do_output == 1) fprintf(f, "\n");
-  log_u = mat.log_u_min;
-  for (int i = 0; i < num_u; i++) {
-    A1_u[i] = exp(log_u);
-    log_u += mat.log_u_step;
-
-    if (do_output == 1)
-      fprintf(f, "%.6e ", A1_u[i] * units_cgs_conversion_factor(
-                                        &us, UNIT_CONV_ENERGY_PER_UNIT_MASS));
-  }
-
-  // Pressures P(rho, u)
-  if (do_output == 1) fprintf(f, "\n");
-  for (int i = 0; i < num_rho; i++) {
-    rho = A1_rho[i];
-
-    for (int j = 0; j < num_u; j++) {
-      P = gas_pressure_from_internal_energy(rho, A1_u[j], mat.mat_id);
-
-      if (do_output == 1)
-        fprintf(f, "%.6e ",
-                P * units_cgs_conversion_factor(&us, UNIT_CONV_PRESSURE));
-    }
-
-    if (do_output == 1) fprintf(f, "\n");
-  }
-  fclose(f);
-
-  return 0;
-}
diff --git a/tests/testEOS.sh b/tests/testEOS.sh
deleted file mode 100644
index 4ffb43eecf03770f87220f4ee5a0d18e52ea5cf3..0000000000000000000000000000000000000000
--- a/tests/testEOS.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/bash
-
-echo ""
-
-rm -f testEOS_rho_u_P.txt
-
-echo "Running  ./testEOS  21  1  0"
-
-./testEOS  21  1  0
-
-exit $?
diff --git a/tests/testEOS_plot.py b/tests/testEOS_plot.py
deleted file mode 100644
index 83b512683ed9c2a0027c8792a0ef3c4c269b365e..0000000000000000000000000000000000000000
--- a/tests/testEOS_plot.py
+++ /dev/null
@@ -1,153 +0,0 @@
-###############################################################################
- # This file is part of SWIFT.
- # Copyright (c) 2016 Matthieu Schaller (matthieu.schaller@durham.ac.uk)
- #               2018 Jacob Kegerreis (jacob.kegerreis@durham.ac.uk)
- #
- # This program is free software: you can redistribute it and/or modify
- # it under the terms of the GNU Lesser General Public License as published
- # by the Free Software Foundation, either version 3 of the License, or
- # (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU Lesser General Public License
- # along with this program.  If not, see <http://www.gnu.org/licenses/>.
- #
- ##############################################################################
-"""
-Plot the output of testEOS to show how the equation of state pressure varies
-with density and specific internal energy.
-
-Text file contains:
-    header
-    num_rho  num_u  mat_id                      # Header info
-    rho_0   rho_1   rho_2   ...   rho_num_rho   # Array of densities, rho
-    u_0     u_1     u_2     ...   u_num_u       # Array of energies, u
-    P_0_0   P_0_1   ...     P_0_num_u           # Array of pressures, P(rho, u)
-    P_1_0   ...     ...     P_1_num_u
-    ...     ...     ...     ...
-    P_num_rho_0     ...     P_num_rho_num_u
-"""
-
-# ========
-# Modules and constants
-# ========
-from __future__ import division
-import numpy as np
-import matplotlib
-import matplotlib.pyplot as plt
-
-filename = "testEOS_rho_u_P.txt"
-
-# Material types (copied from src/equation_of_state/planetary/equation_of_state.h)
-type_factor = 10
-Di_type = {
-    'Till'   : 1,
-    'HM80'   : 2,
-    'ANEOS'  : 3,
-    'SESAME' : 4,
-}
-Di_material = {
-    # Tillotson
-    'Til_iron'      : Di_type['Till']*type_factor,
-    'Til_granite'   : Di_type['Till']*type_factor + 1,
-    'Til_water'     : Di_type['Till']*type_factor + 2,
-    # Hubbard & MacFarlane (1980) Uranus/Neptune
-    'HM80_HHe'      : Di_type['HM80']*type_factor,      # Hydrogen-helium atmosphere
-    'HM80_ice'      : Di_type['HM80']*type_factor + 1,  # H20-CH4-NH3 ice mix
-    'HM80_rock'     : Di_type['HM80']*type_factor + 2,  # SiO2-MgO-FeS-FeO rock mix
-    # ANEOS
-    'ANEOS_iron'        : Di_type['ANEOS']*type_factor,
-    'MANEOS_forsterite' : Di_type['ANEOS']*type_factor + 1,
-    # SESAME
-    'SESAME_iron'   : Di_type['SESAME']*type_factor,
-}
-# Invert so the mat_id are the keys
-Di_mat_id = {mat_id : mat for mat, mat_id in Di_material.iteritems()}
-
-Ba_to_Mbar = 1e-12
-erg_g_to_J_kg = 1e-4
-
-# ========
-# Main
-# ========
-# Load the header info and density and energy arrays
-with open(filename) as f:
-    f.readline()
-    num_rho, num_u, mat_id = np.array(f.readline().split(), dtype=int)
-    A1_rho = np.array(f.readline().split(), dtype=float)
-    A1_u = np.array(f.readline().split(), dtype=float)
-
-# Load pressure array
-A2_P = np.loadtxt(filename, skiprows=4)
-
-# Convert pressures from cgs Barye to Mbar
-A2_P *= Ba_to_Mbar
-# Convert energies from cgs to SI
-A1_u *= erg_g_to_J_kg
-
-# Check that the numbers are right
-assert A1_rho.shape == (num_rho,)
-assert A1_u.shape == (num_u,)
-assert A2_P.shape == (num_rho, num_u)
-try:
-    mat = Di_mat_id[mat_id]
-except KeyError:
-    print "Error: unknown material ID! mat_id = %d" % mat_id
-    print "Materials:"
-    for mat_id, mat in sorted(Di_mat_id.iteritems()):
-        print "  %s%s%d" % (mat, (20 - len("%s" % mat))*" ", mat_id)
-
-# Plot
-plt.figure(figsize=(7, 7))
-ax = plt.gca()
-
-# P(rho) at fixed u
-num_u_fix = 9
-A1_idx = np.floor(np.linspace(0, num_u - 1, num_u_fix)).astype(int)
-A1_colour = matplotlib.cm.rainbow(np.linspace(0, 1, num_u_fix))
-
-for i, idx in enumerate(A1_idx):
-    plt.plot(A1_rho, A2_P[:, idx], c=A1_colour[i],
-             label=r"%.2e" % A1_u[idx])
-
-plt.legend(title="Sp. Int. Energy (J kg$^{-1}$)")
-plt.xscale('log')
-plt.yscale('log')
-plt.xlabel(r"Density (g cm$^{-3}$)")
-plt.ylabel(r"Pressure (Mbar)")
-plt.title(mat)
-plt.tight_layout()
-
-plt.show()
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