Finishes DiceInterface Refactoring and Continues Tests Implementation

control.example.yml

@@ -1,21 +1,22 @@
 diceplayer:
     maxcyc: 3
     opt: no
+    ncores: 4
     nprocs: 4
     qmprog: 'g16'
     lps: no
     ghosts: no
-    altsteps: 20000
 
+    altsteps: 20000
 dice:
-    ncores: 3
     nmol: [1, 50]
     dens: 0.75
-    nstep: [2000, 3000]
+    nstep: [2000, 3000, 4000]
     isave: 1000
     outname: 'phb'
+    progname: '~/.local/bin/dice'
     ljname: 'phb.ljc'
-    randominit: 'always'
+    randominit: 'first'
 
 gaussian:
     qmprog: 'g16'

diceplayer/__main__.py

@@ -1,4 +1,4 @@
-from diceplayer.shared.external.dice import Dice
+from diceplayer.shared.interface.dice_interface import DiceInterface
 from diceplayer.player import Player
 
 from pathlib import Path
@@ -7,7 +7,6 @@ import logging
 import pickle
 import sys
 
-
 __VERSION = "v0.0.1"
 
 
@@ -66,5 +65,6 @@ def main():
 
     player.start()
 
+
 if __name__ == "__main__":
     main()

diceplayer/player.py

@@ -1,3 +1,4 @@
+from diceplayer.shared.config.step_dto import StepDTO
 from diceplayer.shared.environment.atom import Atom
 from diceplayer.shared.utils.dataclass_protocol import Dataclass
 from diceplayer.shared.config.gaussian_dto import GaussianDTO
@@ -5,9 +6,9 @@ from diceplayer.shared.environment.molecule import Molecule
 from diceplayer.shared.environment.system import System
 from diceplayer.shared.utils.misc import weekday_date_time
 from diceplayer.shared.config.player_dto import PlayerDTO
-from diceplayer.shared.external.gaussian import Gaussian
+from diceplayer.shared.interface.gaussian_interface import GaussianInterface
 from diceplayer.shared.config.dice_dto import DiceDTO
-from diceplayer.shared.external.dice import Dice
+from diceplayer.shared.interface.dice_interface import DiceInterface
 
 from dataclasses import fields
 from pathlib import Path
@@ -39,8 +40,8 @@ class Player:
             config_data.get("diceplayer")
         )
 
-        self.gaussian = Gaussian(config_data.get("gaussian"))
+        self.gaussian = GaussianInterface(config_data.get("gaussian"))
-        self.dice = Dice(config_data.get("dice"))
+        self.dice = DiceInterface(config_data.get("dice"))
 
     def start(self):
         self.print_keywords()
@@ -50,6 +51,9 @@ class Player:
         self.read_potentials()
         # self.print_potentials()
 
+        self.dice_start(1)
+        self.dice_start(2)
+
     def create_simulation_dir(self):
         simulation_dir_path = Path(self.config.simulation_dir)
         if simulation_dir_path.exists():
@@ -140,7 +144,7 @@ class Player:
                     self.dice.config.ljname
                 )
             )
-        self.dice.combrule = combrule
+        self.dice.config.combrule = combrule
 
         ntypes = ljdata.pop(0).split()[0]
         if not ntypes.isdigit():
@@ -184,8 +188,21 @@ class Player:
                     Atom(**self.validate_atom_dict(i, j, new_atom))
                 )
 
-    def dice_start(self):
+    def dice_start(self, cycle: int):
-        self.dice.start()
+        self.dice.configure(
+            StepDTO(
+                ncores=self.config.ncores,
+                nprocs=self.config.nprocs,
+                simulation_dir=self.config.simulation_dir,
+                altsteps=self.config.altsteps,
+                molecule=self.system.molecule,
+                nmol=self.system.nmols,
+            )
+        )
+
+        self.dice.start(cycle)
+
+        self.dice.reset()
 
     def gaussian_start(self):
         self.gaussian.start()

diceplayer/shared/config/dice_dto.py

@@ -7,10 +7,11 @@ from typing import List
 
 @dataclass
 class DiceDTO(Dataclass):
-
+    """
+    Data Transfer Object for the Dice configuration.
+    """
     ljname: str
     outname: str
-    ncores: int
     dens: float
     nmol: List[int]
     nstep: List[int]
@@ -20,6 +21,7 @@ class DiceDTO(Dataclass):
     isave: int = 1000
     press: float = 1.0
     temp: float = 300.0
+    progname: str = "dice"
     randominit: str = 'first'
 
     def __post_init__(self):
@@ -44,7 +46,7 @@ class DiceDTO(Dataclass):
                 "Error: 'nmol' keyword not defined appropriately in config file"
             )
 
-        if not isinstance(self.nstep, list):
+        if not isinstance(self.nstep, list) or len(self.nstep) not in (2, 3):
             raise ValueError(
                 "Error: 'nstep' keyword not defined appropriately in config file"
             )

diceplayer/shared/config/gaussian_dto.py

@@ -6,6 +6,9 @@ from dacite import from_dict
 
 @dataclass
 class GaussianDTO(Dataclass):
+    """
+    Data Transfer Object for the Gaussian configuration.
+    """
     level: str
     qmprog: str
     keywords: str

diceplayer/shared/config/player_dto.py

@@ -6,9 +6,13 @@ from dacite import from_dict
 
 @dataclass
 class PlayerDTO(Dataclass):
+    """
+    Data Transfer Object for the player configuration.
+    """
     opt: bool
     maxcyc: int
     nprocs: int
+    ncores: int
 
     qmprog: str = 'g16'
     altsteps: int = 20000

diceplayer/shared/config/step_dto.py

@@ -1,4 +1,5 @@
 from diceplayer.shared.environment.molecule import Molecule
+from diceplayer.shared.config.player_dto import PlayerDTO
 
 from dataclasses import dataclass
 from typing import List
@@ -6,13 +7,16 @@ from typing import List
 
 @dataclass
 class StepDTO:
-    nprocs: int = None
+    """
-    ncores: int = None
+    Data Transfer Object for the step configuration.
-    altsteps: int = None
+    """
-    switchcyc: int = None
+    ncores: int
-    opt: str = None
+    nprocs: int
+    simulation_dir: str
+
+    altsteps: int
+
     nmol: List[int] = None
     molecule: List[Molecule] = None
-
     charges: List[float] = None
     position: List[float] = None

diceplayer/shared/external/__init__.py

@@ -1 +0,0 @@
-from .__external import External

diceplayer/shared/external/dice.py

@@ -1,53 +0,0 @@
-from diceplayer.shared.config.dice_dto import DiceDTO
-from diceplayer.shared.external import External
-
-from multiprocessing import Process, connection
-from setproctitle import setproctitle
-import sys
-
-
-class Dice(External):
-    __slots__ = ['config', 'step']
-
-    def __init__(self, data: dict):
-        self.config: DiceDTO = self.set_config(data)
-
-    @staticmethod
-    def set_config(data: dict) -> DiceDTO:
-        return DiceDTO.from_dict(data)
-
-    def configure(self, step: any):
-        self.step = step
-
-    def start(self, cycle: int):
-        procs = [
-            Process(target=self._simulation_process, args=(cycle, proc))
-            for proc in range(1, self.config.ncores+1)
-        ]
-
-        for proc in procs:
-            proc.start()
-
-        connection.wait(p.sentinel for p in procs)
-
-    def reset(self):
-        del self.step
-
-    def _simulation_process(self, cycle: int, proc: int):
-        setproctitle(f"diceplayer-step{cycle:0d}-p{proc:0d}")
-
-        try:
-            self._make_proc_dir(cycle, proc)
-            self._make_dice_inputs(cycle, proc)
-            self._run_dice(cycle, proc)
-        except Exception as err:
-            sys.exit(err)
-
-    def _make_proc_dir(self, cycle, proc):
-        raise NotImplementedError
-
-    def _make_dice_inputs(self, cycle, proc):
-        raise NotImplementedError
-
-    def _run_dice(self, cycle, proc):
-        raise NotImplementedError

diceplayer/shared/interface/__init__.py

@@ -0,0 +1 @@
+from .__interface import Interface

diceplayer/shared/interface/__interface.py

@@ -3,7 +3,7 @@ from diceplayer.shared.utils.dataclass_protocol import Dataclass
 from abc import ABC, abstractmethod
 
 
-class External(ABC):
+class Interface(ABC):
     __slots__ = [
         'config'
     ]

diceplayer/shared/interface/dice_interface.py

@@ -0,0 +1,388 @@
+from __future__ import annotations
+
+from diceplayer.shared.config.dice_dto import DiceDTO
+from diceplayer.shared.config.step_dto import StepDTO
+from diceplayer.shared.interface import Interface
+
+from multiprocessing import Process, connection
+from setproctitle import setproctitle
+from typing import Final, TextIO
+from pathlib import Path
+import subprocess
+import shutil
+import random
+import time
+import sys
+import os
+
+DICE_END_FLAG: Final[str] = "End of simulation"
+DICE_FLAG_LINE: Final[int] = -2
+UMAANG3_TO_GCM3: Final[float] = 1.6605
+
+MAX_SEED: Final[int] = 4294967295
+
+
+class DiceInterface(Interface):
+    __slots__ = ['config', 'step']
+
+    title = "Diceplayer run"
+
+    def __init__(self, data: dict):
+        self.config: DiceDTO = self.set_config(data)
+        self.step: StepDTO | None = None
+
+    @staticmethod
+    def set_config(data: dict) -> DiceDTO:
+        return DiceDTO.from_dict(data)
+
+    def configure(self, step: any):
+        self.step = step
+
+    def start(self, cycle: int):
+        procs = []
+        sentinels = []
+
+        for proc in range(1, self.step.nprocs + 1):
+
+            p = Process(target=self._simulation_process, args=(cycle, proc))
+            p.start()
+
+            procs.append(p)
+            sentinels.append(p.sentinel)
+
+        while procs:
+            finished = connection.wait(sentinels)
+            for proc_sentinel in finished:
+                i = sentinels.index(proc_sentinel)
+                status = procs[i].exitcode
+                procs.pop(i)
+                sentinels.pop(i)
+                if status != 0:
+                    for p in procs:
+                        p.terminate()
+                    sys.exit(status)
+
+    def reset(self):
+        del self.step
+
+    def _simulation_process(self, cycle: int, proc: int):
+        setproctitle(f"diceplayer-step{cycle:0d}-p{proc:0d}")
+
+        try:
+            self._make_proc_dir(cycle, proc)
+            self._make_dice_inputs(cycle, proc)
+            self._run_dice(cycle, proc)
+        except Exception as err:
+            sys.exit(err)
+
+    def _make_proc_dir(self, cycle, proc):
+        simulation_dir = Path(self.step.simulation_dir)
+        if not simulation_dir.exists():
+            simulation_dir.mkdir(parents=True)
+
+        proc_dir = Path(
+            simulation_dir,
+            f"step{cycle:02d}",
+            f"p{proc:02d}"
+        )
+        proc_dir.mkdir(parents=True, exist_ok=True)
+
+    def _make_dice_inputs(self, cycle, proc):
+        proc_dir = Path(
+            self.step.simulation_dir,
+            f"step{cycle:02d}",
+            f"p{proc:02d}"
+        )
+
+        self._make_potentials(proc_dir)
+
+        random.seed(self._make_dice_seed())
+
+        # This is logic is used to make the initial configuration file
+        # for the next cycle using the last.xyz file from the previous cycle.
+        if self.config.randominit == 'first' and cycle > 1:
+            last_xyz = Path(
+                self.step.simulation_dir,
+                f"step{(cycle - 1):02d}",
+                f"p{proc:02d}",
+                "last.xyz"
+            )
+            if not last_xyz.exists():
+                raise FileNotFoundError(f"File {last_xyz} not found.")
+
+            with open(last_xyz, 'r') as last_xyz_file:
+                self._make_init_file(proc_dir, last_xyz_file)
+                last_xyz_file.seek(0)
+                self.config.dens = self._new_density(last_xyz_file)
+
+        else:
+            self._make_nvt_ter(cycle, proc_dir)
+
+        if len(self.config.nstep) == 2:
+            self._make_nvt_eq(proc_dir)
+
+        elif len(self.config.nstep) == 3:
+            self._make_npt_ter(cycle, proc_dir)
+            self._make_npt_eq(proc_dir)
+
+    def _run_dice(self, cycle: int, proc: int):
+        working_dir = os.getcwd()
+
+        proc_dir = Path(
+            self.step.simulation_dir,
+            f"step{cycle:02d}",
+            f"p{proc:02d}"
+        )
+        os.chdir(proc_dir)
+
+        if not (self.config.randominit == 'first' and cycle > 1):
+            self.run_dice_file(cycle, proc, "NVT.ter")
+
+        if len(self.config.nstep) == 2:
+            self.run_dice_file(cycle, proc, "NVT.eq")
+
+        elif len(self.config.nstep) == 3:
+            self.run_dice_file(cycle, proc, "NPT.ter")
+            self.run_dice_file(cycle, proc, "NPT.eq")
+
+        os.chdir(working_dir)
+
+        xyz_file = Path(proc_dir, "phb.xyz")
+        last_xyz_file = Path(proc_dir, "last.xyz")
+
+        if xyz_file.exists():
+            shutil.copy(xyz_file, last_xyz_file)
+        else:
+            raise FileNotFoundError(f"File {xyz_file} not found.")
+
+    @staticmethod
+    def _make_dice_seed() -> int:
+        num = time.time()
+        num = (num - int(num)) * 1e6
+
+        num = int((num - int(num)) * 1e6)
+
+        return (os.getpid() * num) % (MAX_SEED + 1)
+
+    def _make_init_file(self, proc_dir: Path, last_xyz_file: TextIO):
+        xyz_lines = last_xyz_file.readlines()
+
+        nsites_mm = 0
+        for i in range(len(self.step.nmol)):
+            nsites_mm += self.step.nmol[i] * len(self.step.molecule[i].atom)
+
+        xyz_lines = xyz_lines[-nsites_mm:]
+
+        input_file = Path(proc_dir, self.config.outname + ".xy")
+        with open(input_file, 'w') as f:
+
+            for atom in self.step.molecule[0].atom:
+                f.write(
+                    f"{atom.rx:>10.6f}  {atom.ry:>10.6f}  {atom.rz:>10.6f}\n"
+                )
+
+            for line in xyz_lines:
+                atom = line.split()
+                rx = float(atom[1])
+                ry = float(atom[2])
+                rz = float(atom[3])
+                f.write(f"{rx:>10.6f}  {ry:>10.6f}  {rz:>10.6f}\n")
+
+            f.write("$end")
+
+    def _new_density(self, last_xyz_file: TextIO):
+        last_xyz_lines = last_xyz_file.readlines()
+
+        box = last_xyz_lines[1].split()
+        volume = float(box[-3]) * float(box[-2]) * float(box[-1])
+
+        total_mass = 0
+        for i in range(len(self.step.molecule)):
+            total_mass += self.step.molecule[i].total_mass * self.step.nmol[i]
+
+        density = (total_mass / volume) * UMAANG3_TO_GCM3
+
+        return density
+
+    def _make_nvt_ter(self, cycle, proc_dir):
+        file = Path(proc_dir, "NVT.ter")
+        with open(file, 'w') as f:
+            f.write(f"title = {self.title} - NVT Thermalization\n")
+            f.write(f"ncores = {self.step.ncores}\n")
+            f.write(f"ljname = {self.config.ljname}\n")
+            f.write(f"outname = {self.config.outname}\n")
+
+            mol_string = " ".join(str(x) for x in self.config.nmol)
+            f.write(f"nmol = {mol_string}\n")
+
+            f.write(f"dens = {self.config.dens}\n")
+            f.write(f"temp = {self.config.temp}\n")
+
+            if self.config.randominit == "first" and cycle > 1:
+                f.write(f"init = yesreadxyz\n")
+                f.write(f"nstep = {self.step.altsteps}\n")
+            else:
+                f.write(f"init = yes\n")
+                f.write(f"nstep = {self.config.nstep[0]}\n")
+
+            f.write("vstep = 0\n")
+            f.write("mstop = 1\n")
+            f.write("accum = no\n")
+            f.write("iprint = 1\n")
+            f.write("isave = 0\n")
+            f.write("irdf = 0\n")
+
+            seed = int(1e6 * random.random())
+            f.write(f"seed = {seed}\n")
+            f.write(f"upbuf = {self.config.upbuf}")
+
+    def _make_nvt_eq(self, proc_dir):
+
+        file = Path(proc_dir, "NVT.eq")
+        with open(file, 'w') as f:
+            f.write(f"title = {self.title} - NVT Production\n")
+            f.write(f"ncores = {self.step.ncores}\n")
+            f.write(f"ljname = {self.config.ljname}\n")
+            f.write(f"outname = {self.config.outname}\n")
+
+            mol_string = " ".join(str(x) for x in self.config.nmol)
+            f.write(f"nmol = {mol_string}\n")
+
+            f.write(f"dens = {self.config.dens}\n")
+            f.write(f"temp = {self.config.temp}\n")
+            f.write("init = no\n")
+            f.write(f"nstep = {self.config.nstep[1]}\n")
+            f.write("vstep = 0\n")
+            f.write("mstop = 1\n")
+            f.write("accum = no\n")
+            f.write("iprint = 1\n")
+
+            f.write(f"isave = {self.config.isave}\n")
+            f.write(f"irdf = {10 * self.step.nprocs}\n")
+
+            seed = int(1e6 * random.random())
+            f.write("seed = {}\n".format(seed))
+
+    def _make_npt_ter(self, cycle, proc_dir):
+
+        file = Path(proc_dir, "NPT.ter")
+        with open(file, 'w') as f:
+            f.write(f"title = {self.title} - NPT Thermalization\n")
+            f.write(f"ncores = {self.step.ncores}\n")
+            f.write(f"ljname = {self.config.ljname}\n")
+            f.write(f"outname = {self.config.outname}\n")
+
+            mol_string = " ".join(str(x) for x in self.config.nmol)
+            f.write(f"nmol = {mol_string}\n")
+
+            f.write(f"press = {self.config.press}\n")
+            f.write(f"temp = {self.config.temp}\n")
+
+            if self.config.randominit == "first" and cycle > 1:
+                f.write("init = yesreadxyz\n")
+                f.write(f"dens = {self.config.dens:<8.4f}\n")
+                f.write(f"vstep = {int(self.step.altsteps / 5)}\n")
+            else:
+                f.write("init = no\n")
+                f.write(f"vstep = {int(self.config.nstep[1] / 5)}\n")
+
+            f.write("nstep = 5\n")
+            f.write("mstop = 1\n")
+            f.write("accum = no\n")
+            f.write("iprint = 1\n")
+            f.write("isave = 0\n")
+            f.write("irdf = 0\n")
+
+            seed = int(1e6 * random.random())
+            f.write(f"seed = {seed}\n")
+
+    def _make_npt_eq(self, proc_dir):
+        file = Path(proc_dir, "NPT.eq")
+        with open(file, 'w') as f:
+            f.write(f"title = {self.title} - NPT Production\n")
+            f.write(f"ncores = {self.step.ncores}\n")
+            f.write(f"ljname = {self.config.ljname}\n")
+            f.write(f"outname = {self.config.outname}\n")
+
+            mol_string = " ".join(str(x) for x in self.config.nmol)
+            f.write(f"nmol = {mol_string}\n")
+
+            f.write(f"press = {self.config.press}\n")
+            f.write(f"temp = {self.config.temp}\n")
+
+            f.write(f"nstep = 5\n")
+
+            f.write(f"vstep = {int(self.config.nstep[2] / 5)}\n")
+            f.write("init = no\n")
+            f.write("mstop = 1\n")
+            f.write("accum = no\n")
+            f.write("iprint = 1\n")
+            f.write(f"isave = {self.config.isave}\n")
+            f.write(f"irdf = {10 * self.step.nprocs}\n")
+
+            seed = int(1e6 * random.random())
+            f.write(f"seed = {seed}\n")
+
+    def _make_potentials(self, proc_dir):
+        fstr = "{:<3d} {:>3d}  {:>10.5f} {:>10.5f} {:>10.5f}  {:>10.6f} {:>9.5f} {:>7.4f}\n"
+
+        file = Path(proc_dir, self.config.ljname)
+        with open(file, 'w') as f:
+            f.write(f"{self.config.combrule}\n")
+            f.write(f"{len(self.step.nmol)}\n")
+
+            nsites_qm = len(self.step.molecule[0].atom)
+            f.write(f"{nsites_qm} {self.step.molecule[0].molname}\n")
+
+            for atom in self.step.molecule[0].atom:
+                f.write(
+                    fstr.format(
+                        atom.lbl,
+                        atom.na,
+                        atom.rx,
+                        atom.ry,
+                        atom.rz,
+                        atom.chg,
+                        atom.eps,
+                        atom.sig,
+                    )
+                )
+
+            for mol in self.step.molecule[1:]:
+                f.write(f"{len(mol.atom)} {mol.molname}\n")
+                for atom in mol.atom:
+                    f.write(
+                        fstr.format(
+                            atom.lbl,
+                            atom.na,
+                            atom.rx,
+                            atom.ry,
+                            atom.rz,
+                            atom.chg,
+                            atom.eps,
+                            atom.sig,
+                        )
+                    )
+
+    def run_dice_file(self, cycle: int, proc: int, file_name: str):
+        with open(Path(file_name), 'r') as infile, open(Path(file_name + ".out"), 'w') as outfile:
+            if shutil.which("bash") is not None:
+                exit_status = subprocess.call(
+                    [
+                        "bash",
+                        "-c",
+                        f"exec -a dice-step{cycle}-p{proc} {self.config.progname} < {infile.name} > {outfile.name}",
+                    ]
+                )
+            else:
+                exit_status = subprocess.call(
+                    self.config.progname, stdin=infile, stdout=outfile
+                )
+
+        if exit_status != 0:
+            raise Exception(f"Dice process step{cycle:02d}-p{proc:02d} did not exit properly")
+
+        with open(Path(file_name + ".out"), 'r') as outfile:
+            flag = outfile.readlines()[DICE_FLAG_LINE].strip()
+            if flag != DICE_END_FLAG:
+                raise Exception(f"Dice process step{cycle:02d}-p{proc:02d} did not exit properly")

diceplayer/shared/interface/gaussian_interface.py

@@ -1,8 +1,8 @@
 from diceplayer.shared.config.gaussian_dto import GaussianDTO
-from diceplayer.shared.external import External
+from diceplayer.shared.interface import Interface
 
 
-class Gaussian(External):
+class GaussianInterface(Interface):
 
     def __init__(self, data: dict):
         self.config: GaussianDTO = self.set_config(data)

setup.py

@@ -1,62 +0,0 @@
-import argparse
-from distutils.command.clean import clean
-import os
-import shutil
-import sys
-
-import PyInstaller.__main__
-
-name = "diceplayer"
-
-parser = argparse.ArgumentParser(prog="Diceplayer Setup")
-
-parser.add_argument(
-    "-b", "--build",
-    dest="build",
-    default=False,
-    action="store_true",
-    help="Builds the Diceplayer Binary",
-)
-parser.add_argument(
-    "-c", "--clean",
-    dest="clean",
-    default=False,
-    action="store_true",
-    help="Cleans the Development Environment"
-)
-
-args = parser.parse_args()
-
-
-def __build():
-
-    PyInstaller.__main__.run(
-        ["diceplayer/__main__.py", "--onefile", "-n{}".format(name)]
-    )
-
-
-def __clean():
-
-    try:
-
-        shutil.rmtree("build")
-        shutil.rmtree("dist")
-        os.remove("diceplayer.spec")
-
-    except:
-        
-        print("Workspace clean.")
-
-
-    
-
-
-if __name__ == "__main__":
-
-    if args.build:
-        __build()
-    elif args.clean:
-        __clean()
-    else:
-        parser.print_help(sys.stderr)
-        sys.exit(1)

tests/shared/config/test_dice_dto.py

@@ -8,10 +8,9 @@ class TestDiceDto(unittest.TestCase):
         dice_dto = DiceDTO(
             ljname='test',
             outname='test',
-            ncores=1,
             dens=1.0,
             nmol=[1],
-            nstep=[1],
+            nstep=[1, 1],
         )
 
         self.assertIsInstance(dice_dto, DiceDTO)
@@ -21,10 +20,9 @@ class TestDiceDto(unittest.TestCase):
             DiceDTO(
                 ljname=None,
                 outname='test',
-                ncores=1,
                 dens=1.0,
                 nmol=[1],
-                nstep=[1],
+                nstep=[1, 1],
             )
             self.assertEqual(ex.exception, "Error: 'ljname' keyword not specified in config file")
 
@@ -33,10 +31,9 @@ class TestDiceDto(unittest.TestCase):
             DiceDTO(
                 ljname='test',
                 outname=None,
-                ncores=1,
                 dens=1.0,
                 nmol=[1],
-                nstep=[1],
+                nstep=[1, 1],
             )
             self.assertEqual(ex.exception, "Error: 'outname' keyword not specified in config file")
 
@@ -45,10 +42,9 @@ class TestDiceDto(unittest.TestCase):
             DiceDTO(
                 ljname='test',
                 outname='test',
-                ncores=1,
                 dens=None,
                 nmol=[1],
-                nstep=[1],
+                nstep=[1, 1],
             )
             self.assertEqual(ex.exception, "Error: 'dens' keyword not specified in config file")
 
@@ -57,10 +53,9 @@ class TestDiceDto(unittest.TestCase):
             DiceDTO(
                 ljname='test',
                 outname='test',
-                ncores=1,
                 dens=1.0,
                 nmol=0,
-                nstep=[1],
+                nstep=[1, 1],
             )
             self.assertEqual(ex.exception, "Error: 'nmol' keyword not defined appropriately in config file")
 
@@ -69,7 +64,6 @@ class TestDiceDto(unittest.TestCase):
             DiceDTO(
                 ljname='test',
                 outname='test',
-                ncores=1,
                 dens=1.0,
                 nmol=[1],
                 nstep=0,
@@ -80,10 +74,9 @@ class TestDiceDto(unittest.TestCase):
         dice_dto = DiceDTO.from_dict({
             'ljname': 'test',
             'outname': 'test',
-            'ncores': 1,
             'dens': 1.0,
             'nmol': [1],
-            'nstep': [1],
+            'nstep': [1, 1],
         })
 
         self.assertIsInstance(dice_dto, DiceDTO)

tests/shared/config/test_gaussian_dto.py

@@ -0,0 +1,45 @@
+from diceplayer.shared.config.gaussian_dto import GaussianDTO
+
+import unittest
+
+
+class TestGaussianDTO(unittest.TestCase):
+    def test_class_instantiation(self):
+        gaussian_dto = GaussianDTO(
+            level='test',
+            qmprog='g16',
+            keywords='test',
+        )
+
+        self.assertIsInstance(gaussian_dto, GaussianDTO)
+
+    def test_is_valid_qmprog(self):
+        with self.assertRaises(ValueError):
+            gaussian_dto = GaussianDTO(
+                level='test',
+                qmprog='test',
+                keywords='test',
+            )
+
+    def test_is_valid_level(self):
+        with self.assertRaises(ValueError):
+            gaussian_dto = GaussianDTO(
+                level=None,
+                qmprog='g16',
+                keywords='test',
+            )
+
+    def test_from_dict(self):
+        gaussian_dto = GaussianDTO.from_dict(
+            {
+                'level': 'test',
+                'qmprog': 'g16',
+                'keywords': 'test',
+            }
+        )
+
+        self.assertIsInstance(gaussian_dto, GaussianDTO)
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/shared/config/test_player_dto.py

@@ -0,0 +1,28 @@
+from diceplayer.shared.config.player_dto import PlayerDTO
+
+import unittest
+
+
+class TestPlayerDTO(unittest.TestCase):
+    def test_class_instantiation(self):
+        player_dto = PlayerDTO(opt=True, maxcyc=100, nprocs=4)
+
+        self.assertIsInstance(player_dto, PlayerDTO)
+
+    def test_min_altsteps(self):
+        player_dto = PlayerDTO(opt=True, maxcyc=100, nprocs=4, altsteps=100)
+
+        self.assertEqual(player_dto.altsteps, 20000)
+
+    def test_from_dict(self):
+        player_dto = PlayerDTO.from_dict({
+            'opt': True,
+            'maxcyc': 100,
+            'nprocs': 4
+        })
+
+        self.assertIsInstance(player_dto, PlayerDTO)
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/shared/environment/test_system.py

@@ -26,25 +26,6 @@ class TestSystem(unittest.TestCase):
             system.add_type('test', Molecule('test'))
             self.assertEqual(ex.exception, 'Error: nmols is not an integer')
 
-    def test_center_of_mass_distance(self):
-        system = System()
-
-        a = Molecule('test')
-        a.add_atom(
-            Atom(lbl=0, na=1, rx=0, ry=0, rz=0, chg=0, eps=0, sig=0)
-        )
-        system.add_type(1, a)
-
-        b = Molecule('test')
-        b.add_atom(
-            Atom(lbl=0, na=1, rx=0, ry=0, rz=0, chg=0, eps=0, sig=0)
-        )
-        system.add_type(1, b)
-
-        self.assertIsInstance(system.center_of_mass_distance(0, 1), float)
-
-
-
 
 if __name__ == '__main__':
     unittest.main()

tests/shared/external/test_dice.py

@@ -1,4 +1,5 @@
-from diceplayer.shared.external.dice import Dice
+from diceplayer.shared.config.step_dto import StepDTO
+from diceplayer.shared.interface.dice_interface import DiceInterface
 
 from unittest import mock
 import unittest
@@ -6,28 +7,28 @@ import unittest
 
 class TestDice(unittest.TestCase):
     def test_class_instantiation(self):
-        dice = Dice(
+        dice = DiceInterface(
             {
                 'ljname': 'test',
                 'outname': 'test',
                 'ncores': 1,
                 'dens': 1.0,
                 'nmol': [1],
-                'nstep': [1],
+                'nstep': [1, 1],
             }
         )
 
-        self.assertIsInstance(dice, Dice)
+        self.assertIsInstance(dice, DiceInterface)
 
     def test_configure(self):
-        dice = Dice(
+        dice = DiceInterface(
             {
                 'ljname': 'test',
                 'outname': 'test',
                 'ncores': 1,
                 'dens': 1.0,
                 'nmol': [1],
-                'nstep': [1],
+                'nstep': [1, 1],
             }
         )
 
@@ -38,14 +39,14 @@ class TestDice(unittest.TestCase):
         self.assertTrue(hasattr(dice, 'step'))
 
     def test_reset(self):
-        dice = Dice(
+        dice = DiceInterface(
             {
                 'ljname': 'test',
                 'outname': 'test',
                 'ncores': 1,
                 'dens': 1.0,
                 'nmol': [1],
-                'nstep': [1],
+                'nstep': [1, 1],
             }
         )
 
@@ -60,30 +61,41 @@ class TestDice(unittest.TestCase):
     @mock.patch('diceplayer.shared.external.dice.connection')
     @mock.patch('diceplayer.shared.external.dice.Process')
     def test_start(self, mock_process, mock_connection):
-        dice = Dice(
+        dice = DiceInterface(
             {
                 'ljname': 'test',
                 'outname': 'test',
                 'ncores': 1,
                 'dens': 1.0,
                 'nmol': [1],
-                'nstep': [1],
+                'nstep': [1, 1],
             }
         )
+        dice.configure(
+            StepDTO(
+                ncores=1,
+                nprocs=1,
+                simulation_dir='test',
+                altsteps=1,
+                molecule=[],
+                nmol=[],
+            )
+        )
+
         dice.start(1)
 
         self.assertTrue(mock_process.called)
         self.assertTrue(mock_connection.wait.called)
 
     def test_simulation_process_raises_exception(self):
-        dice = Dice(
+        dice = DiceInterface(
             {
                 'ljname': 'test',
                 'outname': 'test',
                 'ncores': 1,
                 'dens': 1.0,
                 'nmol': [1],
-                'nstep': [1],
+                'nstep': [1, 1],
             }
         )
 
@@ -94,14 +106,14 @@ class TestDice(unittest.TestCase):
     @mock.patch('diceplayer.shared.external.dice.Dice._make_dice_inputs')
     @mock.patch('diceplayer.shared.external.dice.Dice._run_dice')
     def test_simulation_process(self, mock_run_dice, mock_make_dice_inputs, mock_make_proc_dir):
-        dice = Dice(
+        dice = DiceInterface(
             {
                 'ljname': 'test',
                 'outname': 'test',
                 'ncores': 1,
                 'dens': 1.0,
                 'nmol': [1],
-                'nstep': [1],
+                'nstep': [1, 1],
             }
         )
 
@@ -111,6 +123,82 @@ class TestDice(unittest.TestCase):
         self.assertTrue(dice._make_dice_inputs.called)
         self.assertTrue(dice._run_dice.called)
 
+    @mock.patch('diceplayer.shared.external.dice.Path.mkdir')
+    @mock.patch('diceplayer.shared.external.dice.Path.exists')
+    def test_make_proc_dir_if_simdir_exists(self, mock_path_exists, mock_path_mkdir):
+        dice = DiceInterface(
+            {
+                'ljname': 'test',
+                'outname': 'test',
+                'ncores': 1,
+                'dens': 1.0,
+                'nmol': [1],
+                'nstep': [1, 1],
+            }
+        )
+        dice.configure(
+            StepDTO(
+                ncores=1,
+                nprocs=1,
+                simulation_dir='test',
+                altsteps=1,
+                molecule=[],
+                nmol=[],
+            )
+        )
+
+        mock_path_exists.return_value = False
+
+        dice._make_proc_dir(1, 1)
+
+        self.assertEqual(mock_path_mkdir.call_count, 2)
+
+    @mock.patch('diceplayer.shared.external.dice.Path.mkdir')
+    @mock.patch('diceplayer.shared.external.dice.Path.exists')
+    def test_make_proc_dir_if_simdir_doesnt_exists(self, mock_path_exists, mock_path_mkdir):
+        dice = DiceInterface(
+            {
+                'ljname': 'test',
+                'outname': 'test',
+                'ncores': 1,
+                'dens': 1.0,
+                'nmol': [1],
+                'nstep': [1, 1],
+            }
+        )
+        dice.configure(
+            StepDTO(
+                ncores=1,
+                nprocs=1,
+                simulation_dir='test',
+                altsteps=1,
+                molecule=[],
+                nmol=[],
+            )
+        )
+
+        mock_path_exists.return_value = False
+
+        dice._make_proc_dir(1, 1)
+
+        self.assertEqual(mock_path_mkdir.call_count, 2)
+
+    def test_make_dice_seed(self):
+        dice = DiceInterface(
+            {
+                'ljname': 'test',
+                'outname': 'test',
+                'ncores': 1,
+                'dens': 1.0,
+                'nmol': [1],
+                'nstep': [1, 1],
+            }
+        )
+
+        seed = dice._make_dice_seed()
+
+        self.assertIsInstance(seed, int)
+
 
 if __name__ == '__main__':
     unittest.main()