 = main([recep, ligs, constrnt_file, "-m", "NONE", "-i"])
            detect_right_output(
                p, "decoy.vina_out.11." + ligs_desc.lower() + " (pose 3)",
            )

    # Test OPENBABEL mode (pdb and pdbqt)
    for recep, recep_desc in [(receptor_pdb, "PDB"), (receptor_pdbqt, "PDBQT")]:
        for ligs, constrnt_file, ligs_desc in [
            (ligand_pdbs, filters, "PDB"),
            (ligand_pdbqts, filters, "PDBQT"),
        ]:
            print(
                (
                    "TEST: {recep_desc} receptor + {ligs_desc} ligand "
                    + "(OPENBABEL mode)"
                ).format(recep_desc=recep_desc, ligs_desc=ligs_desc)
            )
            p = main(
                [
                    recep,
                    ligs,
                    constrnt_file,
                    "-m",
                    "OPENBABEL",
                    "--babel_exec",
                    obabel_path,
                    "-i",
                ]
            )
            detect_right_output(
                p, "decoy.vina_out.11." + ligs_desc.lower() + " (pose 3)",
            )

    # Test SMILES mode
    for recep, recep_desc in [(receptor_pdb, "PDB"), (receptor_pdbqt, "PDBQT")]:
        for ligs, constrnt_file, ligs_desc in [
            (ligand_pdbs, filters, "PDB"),
            (ligand_pdbqts, filters, "PDBQT"),
        ]:
            print(
                (
                    "TEST: {recep_desc} receptor + {ligs_desc} ligand "
                    + "(SMILES mode)"
                ).format(recep_desc=recep_desc, ligs_desc=ligs_desc)
            )
            # print(" ".join([recep, ligs, constrnt_file, "-m", "SMILES", "-i"]))
            p = main([recep, ligs, constrnt_file, "-m", "SMILES", "-i"])
            detect_right_output(
                p, "decoy.vina_out.11." + ligs_desc.lower() + " (pose 3)",
            )

    # Make sure it still works when you only specify partial receptor ligand
    # atoms.
    print(
        "TEST: PDB receptor + PDB ligand "
        + "(OPENBABEL mode) with partial receptor atoms specified"
    )
    p = main(
        [
            receptor_pdb,
            ligand_pdbs,
            example_path + "filters_limit_selection.json",
            "-m",
            "OPENBABEL",
            "--babel_exec",
            obabel_path,
            "-i",
        ]
    )
    detect_right_output(
        p, "decoy.vina_out.11.pdb (pose 3)",
    )

    # Test OPENBABEL mode on pdb ligands using all processors (to test
    # multiprocessing).
    print(
        "TEST: PDB receptor + PDB ligand "
        + "(OPENBABEL mode) using multiple (all) processors "
        + "(final test, will fail on Windows)"
    )
    p = main(
        [
            receptor_pdb,
            ligand_pdbs,
            filters,
            "-m",
            "OPENBABEL",
            "--babel_exec",
            obabel_path,
            "-i",
            "--num_processors",
            "-1",
            "--job_manager",
            "multiprocessing",
        ]
    )
    detect_right_output(
        p, "decoy.vina_out.11.pdb (pose 3)",
    )
Notes: Marsden Cottage Halt was a later addition opening in c.1900 to serve Marsden Cottage. Marsden Cottage (also known locally as Salmons Hall as was the halt) was built as a large country house. By the 1891 census the Hall had been leased to the Harton Coal Company who converted the outbuildings into cottages and divided the main house into separate dwellings for men working at the near by Whitburn Colliery. The halt was provided to take the miners to work and their wives shopping. In 1911 67 men, women and children lived in this isolated hamlet. Marsden Cottage had a long drive with a substantial gate house. The railway and, in 1928, the coast road ran between the gatehouse and Marsden Cottage.
Marsden Cottage was demolished in 1937 but the halt remained open to serve the Horsley Hill housing estate which was built in the 1930s.
The halt had a short unlit platform on the east side of the line with a brick waiting shelter. After nationalisation, the NCB also provided two corrugated iron shelters, one either side of the brick shelter. The three shelters stretched the full length of the platform. Marsden Cottage never appeared in Bradshaw but it did have paper tickets issued by the conductor. Trains stopped by request only; if passengers wished to alight there, they would tell the guard at Westoe Lane or Marsden and he would inform the driver that the train needed to stop 'half way'.
Separate trains were provided for the public and colliery workers but after 1913 public passengers and colliery workers used the same train and were directed to the right coach by the guard. Initially the line was known as the Marsden Railway but by the end of the century it had acquired the more grandiose title The South Shields Marsden and Whitburn Colliery Railway The first timetable only shows a weekday service but Marsden was convenient for Marsden Rock and the bay and the line soon attracted tourist traffic with a Sunday service which was slightly more frequent than the weekday service being introduced in 1881. In 1891, the Whitburn Coal Company which was, by then, in financial difficulty, was amalgamated with the Harton Coal Company, which continued to work the line.
The railway and Whitburn Colliery laboured on into the 1960's, but during 1965 the N.C.B. sold off the two Marsden quarries, and that soon brought an end to the rail movement of limestone, as lorries took over deliveries immediately. Also during 1965 the N.C.B. brought in three new diesel locomotives to replace all the steam engines which had over the years given sterling service. These diesels were put to work 24 hours a day, 7days a week during a seaman's strike in 1966, which closed the Harton Staiths for quite a while. Whilst the strike was taking place it was decided to use Whitburn colliery to stockpile all of the coal produced by the Harton pits. This lead to intense activity on the railway the like of which was never to be seen again.
Marsden Cottage Halt looking south in 1934 as the Rattler approaches.
1914 1:2,500 OS map. The halt was always referred to as Marsden Cottage Platform by Ordnance Survey. The railway cut through the original drive to Marsden Cottage, the lodge (gatehouse) is noted to the south of the railway. The platform with a single waiting shelter are shown.
1940 1:2,500 OS map, By the time this map was published Marsden Cottage had just been demolished along with the lodge. The boundaries of the miners community are still shown on this map.
1956 1:2,500 OS map published three years after the halt closed. The two additional NCB waiting shelters had clearly been demolished by the time of this survey.
A post-nationalisation view of Marsden Cottage Halt with the original HCC waiting shelter flanked by the two corrugated iron shelters provided by the National Coal Board.
Close up view of the three waiting shelters that stretched the full length of the platform. The two corrugated iron shelters were demolished shortly after closure of the halt in 1953.
Marsden Cottage Halt looking north c late1950's. The NCB shelters were short lived and were removed after closure.
Marsden Cottage Halt looking south in May 1968, only the platform edge remains.
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