def test(host, pguser):
    pg_conn_info = "dbname=epanet_test_db host=" + host + " user="******"dropdb --if-exists -h " + host + " -U "+pguser+" epanet_test_db")
    os.system("createdb -h " + host + " -U "+pguser+" epanet_test_db")
    os.system("psql -h " + host + " -U "+pguser+" epanet_test_db -f "+test_data_dir+"/epanet_test_db.sql")

    versioning.historize(pg_conn_info,"epanet")

    # try the update
    wc = tmp_dir+"/bug_in_branch_after_commit_wc.sqlite"
    if os.path.isfile(wc): os.remove(wc) 
    
    spversioning = versioning.spatialite(wc, pg_conn_info)
    spversioning.checkout(['epanet_trunk_rev_head.junctions', 'epanet_trunk_rev_head.pipes'])

    scur = versioning.Db( dbapi2.connect( wc ) )

    scur.execute("SELECT * FROM pipes")
    scur.execute("UPDATE pipes_view SET length = 1 WHERE OGC_FID = 1")
    scur.commit()

    spversioning.commit('test')

    versioning.add_branch(pg_conn_info,"epanet","mybranch","add 'branch")
Esempio n. 2
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def test(host, pguser):
    pg_conn_info = "dbname=epanet_test_db host=" + host + " user="******"dropdb --if-exists -h " + host + " -U " + pguser +
              " epanet_test_db")
    os.system("createdb -h " + host + " -U " + pguser + " epanet_test_db")
    os.system("psql -h " + host + " -U " + pguser +
              " epanet_test_db -c 'CREATE EXTENSION postgis'")
    os.system("psql -h " + host + " -U " + pguser + " epanet_test_db -f " +
              test_data_dir + "/epanet_test_db_unversioned.sql")

    versioning.historize(pg_conn_info, "epanet")

    # try the update
    wc = tmp_dir + "/bug_in_branch_after_commit_wc.sqlite"
    if os.path.isfile(wc): os.remove(wc)

    spversioning = versioning.spatialite(wc, pg_conn_info)
    spversioning.checkout(
        ['epanet_trunk_rev_head.junctions', 'epanet_trunk_rev_head.pipes'])

    scur = versioning.Db(dbapi2.connect(wc))

    scur.execute("SELECT * FROM pipes")
    scur.execute("UPDATE pipes_view SET length = 1 WHERE OGC_FID = 1")
    scur.commit()

    spversioning.commit('test')

    versioning.add_branch(pg_conn_info, "epanet", "mybranch", "add 'branch")
def test(host, pguser):
    pg_conn_info = "dbname=epanet_test_db host=" + host + " user="******"dropdb --if-exists -h " + host + " -U " + pguser +
              " epanet_test_db")
    os.system("createdb -h " + host + " -U " + pguser + " epanet_test_db")
    os.system("psql -h " + host + " -U " + pguser +
              " epanet_test_db -c 'CREATE EXTENSION postgis'")
    os.system("psql -h " + host + " -U " + pguser + " epanet_test_db -f " +
              test_data_dir + "/epanet_test_db.sql")
    versioning.historize(
        "dbname=epanet_test_db host={} user={}".format(host, pguser), "epanet")

    # branch
    versioning.add_branch(pg_conn_info, "epanet", "mybranch", "add 'branch")

    # chechout from branch : epanet_brwcs_rev_head
    #tables = ['epanet_trunk_rev_head.junctions','epanet_trunk_rev_head.pipes']
    tables = [
        'epanet_mybranch_rev_head.junctions', 'epanet_mybranch_rev_head.pipes'
    ]
    pgversioning = versioning.pgServer(pg_conn_info, 'epanet_brwcs_rev_head')
    pgversioning.checkout(tables)

    pcur = versioning.Db(psycopg2.connect(pg_conn_info))

    # insert into epanet_brwcs_rev_head
    pcur.execute(
        "INSERT INTO epanet_brwcs_rev_head.pipes_view(id, start_node, end_node, geom) VALUES ('2','1','2',ST_GeometryFromText('LINESTRING(1 1,0 1)',2154))"
    )
    pcur.execute(
        "INSERT INTO epanet_brwcs_rev_head.pipes_view(id, start_node, end_node, geom) VALUES ('3','1','2',ST_GeometryFromText('LINESTRING(1 -1,0 1)',2154))"
    )
    pcur.execute("DELETE FROM epanet_brwcs_rev_head.pipes_view WHERE id=3")
    pcur.commit()

    pgversioning.commit("commit", "postgres")

    versioning.merge(pg_conn_info, "epanet", "mybranch")

    pcur.execute("SELECT max(rev) FROM epanet.revisions")
    assert (pcur.fetchone()[0] == 4)

    pcur.execute(
        "SELECT rev, commit_msg, branch FROM epanet.revisions WHERE rev=4")
    assert (pcur.fetchall() == [(4, 'Merge branch mybranch into trunk',
                                 'trunk')])

    pcur.execute(
        "SELECT versioning_id, trunk_rev_begin, trunk_rev_end, mybranch_rev_begin,mybranch_rev_end FROM epanet.pipes"
    )
    assert (pcur.fetchall() == [(1, 1, None, 2, None), (2, 3, None, 3, None)])

    pcur.close()
def test(host, pguser):
    pg_conn_info = "dbname=epanet_test_db host=" + host + " user="******"dropdb --if-exists -h " + host +
              " -U "+pguser+" epanet_test_db")
    os.system("createdb -h " + host + " -U "+pguser+" epanet_test_db")
    os.system("psql -h " + host + " -U "+pguser +
              " epanet_test_db -c 'CREATE EXTENSION postgis'")
    os.system("psql -h " + host + " -U "+pguser +
              " epanet_test_db -f "+test_data_dir+"/epanet_test_db.sql")
    versioning.historize("dbname=epanet_test_db host={} user={}".format(host,pguser), "epanet")

    # branch
    versioning.add_branch(pg_conn_info, "epanet", "mybranch", "add 'branch")

    # chechout from branch : epanet_brwcs_rev_head
    #tables = ['epanet_trunk_rev_head.junctions','epanet_trunk_rev_head.pipes']
    tables = ['epanet_mybranch_rev_head.junctions',
              'epanet_mybranch_rev_head.pipes']
    pgversioning = versioning.pgServer(pg_conn_info, 'epanet_brwcs_rev_head')
    pgversioning.checkout(tables)

    pcur = versioning.Db(psycopg2.connect(pg_conn_info))

    # insert into epanet_brwcs_rev_head
    pcur.execute("INSERT INTO epanet_brwcs_rev_head.pipes_view(id, start_node, end_node, geom) VALUES ('2','1','2',ST_GeometryFromText('LINESTRING(1 1,0 1)',2154))")
    pcur.execute("INSERT INTO epanet_brwcs_rev_head.pipes_view(id, start_node, end_node, geom) VALUES ('3','1','2',ST_GeometryFromText('LINESTRING(1 -1,0 1)',2154))")
    pcur.execute("DELETE FROM epanet_brwcs_rev_head.pipes_view WHERE id=3")
    pcur.commit()

    pgversioning.commit("commit", "postgres")

    versioning.merge(pg_conn_info, "epanet", "mybranch")

    pcur.execute("SELECT max(rev) FROM epanet.revisions")
    assert(pcur.fetchone()[0] == 4)

    pcur.execute(
        "SELECT rev, commit_msg, branch FROM epanet.revisions WHERE rev=4")
    assert(pcur.fetchall() == [
           (4, 'Merge branch mybranch into trunk', 'trunk')])

    pcur.execute(
        "SELECT versioning_id, trunk_rev_begin, trunk_rev_end, mybranch_rev_begin,mybranch_rev_end FROM epanet.pipes")
    assert(pcur.fetchall() == [(1, 1, None, 2, None), (2, 3, None, 3, None)])

    pcur.close()
def test(host, pguser):
    pg_conn_info = "dbname=epanet_test_db host=" + host + " user="******"dropdb --if-exists -h " + host + " -U "+pguser+" epanet_test_db")
    os.system("createdb -h " + host + " -U "+pguser+" epanet_test_db")
    os.system("psql -h " + host + " -U "+pguser+" epanet_test_db -c 'CREATE EXTENSION postgis'")

    pcur = versioning.Db(psycopg2.connect(pg_conn_info))
    pcur.execute("CREATE SCHEMA epanet")
    pcur.execute("""
        CREATE TABLE epanet.junctions (
            hid serial PRIMARY KEY,
            id varchar,
            elevation float,
            base_demand_flow float,
            demand_pattern_id varchar,
            geometry geometry('POINT',2154),
            geometry_schematic geometry('POLYGON',2154)
        )""")

    pcur.execute("""
        INSERT INTO epanet.junctions
            (id, elevation, geometry, geometry_schematic)
            VALUES
            ('0',0,ST_GeometryFromText('POINT(0 0)',2154),
            ST_GeometryFromText('POLYGON((-1 -1,1 -1,1 1,-1 1,-1 -1))',2154))""")

    pcur.execute("""
        INSERT INTO epanet.junctions
            (id, elevation, geometry, geometry_schematic)
            VALUES
            ('1',1,ST_GeometryFromText('POINT(0 1)',2154),
            ST_GeometryFromText('POLYGON((0 0,2 0,2 2,0 2,0 0))',2154))""")

    pcur.execute("""
        CREATE TABLE epanet.pipes (
            hid serial PRIMARY KEY,
            id varchar,
            start_node varchar,
            end_node varchar,
            length float,
            diameter float,
            roughness float,
            minor_loss_coefficient float,
            status varchar,
            geometry geometry('LINESTRING',2154)
        )""")

    pcur.execute("""
        INSERT INTO epanet.pipes
            (id, start_node, end_node, length, diameter, geometry)
            VALUES
            ('0','0','1',1,2,ST_GeometryFromText('LINESTRING(1 0,0 1)',2154))""")

    pcur.commit()
    pcur.close()

    versioning.historize( pg_conn_info, 'epanet' )

    failed = False
    try:
        versioning.add_branch( pg_conn_info, 'epanet', 'trunk' )
    except:
        failed = True
    assert( failed )

    failed = False
    try:
        versioning.add_branch( pg_conn_info, 'epanet', 'mybranch', 'message', 'toto' )
    except:
        failed = True
    assert( failed )

    versioning.add_branch( pg_conn_info, 'epanet', 'mybranch', 'test msg' )


    pcur = versioning.Db(psycopg2.connect(pg_conn_info))
    pcur.execute("SELECT * FROM epanet_mybranch_rev_head.junctions")
    assert( len(pcur.fetchall()) == 2 )
    pcur.execute("SELECT * FROM epanet_mybranch_rev_head.pipes")
    assert( len(pcur.fetchall()) == 1 )

    ##versioning.add_revision_view( pg_conn_info, 'epanet', 'mybranch', 2)
    ##pcur.execute("SELECT * FROM epanet_mybranch_rev_2.junctions")
    ##assert( len(pcur.fetchall()) == 2 )
    ##pcur.execute("SELECT * FROM epanet_mybranch_rev_2.pipes")
    ##assert( len(pcur.fetchall()) == 1 )

    select_and_where_str =  versioning.rev_view_str( pg_conn_info, 'epanet', 'junctions','mybranch', 2)
    #print(select_and_where_str[0] + " WHERE " + select_and_where_str[1])
    pcur.execute(select_and_where_str[0] + " WHERE " + select_and_where_str[1])
    assert( len(pcur.fetchall()) == 2 )
    select_and_where_str =  versioning.rev_view_str( pg_conn_info, 'epanet', 'pipes','mybranch', 2)
    #print(select_and_where_str[0] + " WHERE " + select_and_where_str[1])
    pcur.execute(select_and_where_str[0] + " WHERE " + select_and_where_str[1])
    assert( len(pcur.fetchall()) == 1 )

    ##pcur.execute("SELECT ST_AsText(geometry), ST_AsText(geometry_schematic) FROM epanet_mybranch_rev_2.junctions")
    pcur.execute("SELECT ST_AsText(geometry), ST_AsText(geometry_schematic) FROM epanet.junctions")
    res = pcur.fetchall()
    assert( res[0][0] == 'POINT(0 0)' )
    assert( res[1][1] == 'POLYGON((0 0,2 0,2 2,0 2,0 0))' )


    wc = os.path.join(tmp_dir, 'wc_multiple_geometry_test.sqlite')
    spversioning = versioning.spatialite(wc, pg_conn_info)
    if os.path.isfile(wc): os.remove(wc)
    spversioning.checkout( ['epanet_trunk_rev_head.pipes','epanet_trunk_rev_head.junctions'] )


    scur = versioning.Db( dbapi2.connect(wc) )
    scur.execute("UPDATE junctions_view SET GEOMETRY = GeometryFromText('POINT(3 3)',2154)")
    scur.commit()
    scur.close()

    spversioning.commit( 'a commit msg' )

    pcur.execute("SELECT ST_AsText(geometry), ST_AsText(geometry_schematic) FROM epanet_trunk_rev_head.junctions")
    res = pcur.fetchall()
    for r in res: print(r)
    assert( res[0][0] == 'POINT(3 3)' )
    assert( res[1][1] == 'POLYGON((0 0,2 0,2 2,0 2,0 0))' )
    pcur.close()
def test(host, pguser):
    pg_conn_info = "dbname=epanet_test_db host=" + host + " user="******"dropdb --if-exists -h " + host + " -U "+pguser+" epanet_test_db")
    os.system("createdb -h " + host + " -U "+pguser+" epanet_test_db")
    os.system("psql -h " + host + " -U "+pguser+" epanet_test_db -c 'CREATE EXTENSION postgis'")

    pcur = versioning.Db(psycopg2.connect(pg_conn_info))
    pcur.execute("CREATE SCHEMA epanet")
    pcur.execute("""
        CREATE TABLE epanet.junctions (
            hid serial PRIMARY KEY,
            id varchar,
            elevation float,
            base_demand_flow float,
            demand_pattern_id varchar,
            geom geometry('POINT',2154)
        )""")

    pcur.execute("""
        INSERT INTO epanet.junctions
            (id, elevation, geom)
            VALUES
            ('0',0,ST_GeometryFromText('POINT(1 0)',2154))""")

    pcur.execute("""
        INSERT INTO epanet.junctions
            (id, elevation, geom)
            VALUES
            ('1',1,ST_GeometryFromText('POINT(0 1)',2154))""")

    pcur.execute("""
        CREATE TABLE epanet.pipes (
            hid serial PRIMARY KEY,
            id varchar,
            start_node varchar,
            end_node varchar,
            length float,
            diameter float,
            roughness float,
            minor_loss_coefficient float,
            status varchar,
            geom geometry('LINESTRING',2154)
        )""")

    pcur.execute("""
        INSERT INTO epanet.pipes
            (id, start_node, end_node, length, diameter, geom)
            VALUES
            ('0','0','1',1,2,ST_GeometryFromText('LINESTRING(1 0,0 1)',2154))""")

    pcur.commit()
    pcur.close()

    versioning.historize( pg_conn_info, 'epanet' )

    failed = False
    try:
        versioning.add_branch( pg_conn_info, 'epanet', 'trunk' )
    except:
        failed = True
    assert( failed )

    failed = False
    try:
        versioning.add_branch( pg_conn_info, 'epanet', 'mybranch', 'message', 'toto' )
    except:
        failed = True
    assert( failed )

    versioning.add_branch( pg_conn_info, 'epanet', 'mybranch', 'test msg' )


    pcur = versioning.Db(psycopg2.connect(pg_conn_info))
    pcur.execute("SELECT * FROM epanet_mybranch_rev_head.junctions")
    assert( len(pcur.fetchall()) == 2 )
    pcur.execute("SELECT * FROM epanet_mybranch_rev_head.pipes")
    assert( len(pcur.fetchall()) == 1 )

    ##versioning.add_revision_view( pg_conn_info, 'epanet', 'mybranch', 2)
    ##pcur.execute("SELECT * FROM epanet_mybranch_rev_2.junctions")
    ##assert( len(pcur.fetchall()) == 2 )
    ##pcur.execute("SELECT * FROM epanet_mybranch_rev_2.pipes")
    ##assert( len(pcur.fetchall()) == 1 )

    select_str, where_str =  versioning.rev_view_str( pg_conn_info, 'epanet', 'junctions','mybranch', 2)
    pcur.execute(select_str + " WHERE " + where_str)
    assert( len(pcur.fetchall()) == 2 )
    select_str, where_str =  versioning.rev_view_str( pg_conn_info, 'epanet', 'pipes','mybranch', 2)
    pcur.execute(select_str + " WHERE " + where_str)
    assert( len(pcur.fetchall()) == 1 )

    pcur.close()
def test(host, pguser):
    pg_conn_info = "dbname=epanet_test_db host=" + host + " user="******"dropdb --if-exists -h " + host + " -U "+pguser+" epanet_test_db")
    os.system("createdb -h " + host + " -U "+pguser+" epanet_test_db")
    os.system("psql -h " + host + " -U "+pguser+" epanet_test_db -c 'CREATE EXTENSION postgis'")

    pcur = versioning.Db(psycopg2.connect(pg_conn_info))
    pcur.execute("CREATE SCHEMA epanet")
    pcur.execute("""
        CREATE TABLE epanet.junctions (
            hid serial PRIMARY KEY,
            id varchar,
            elevation float,
            base_demand_flow float,
            demand_pattern_id varchar,
            geometry geometry('POINT',2154),
            geometry_schematic geometry('POLYGON',2154)
        )""")

    pcur.execute("""
        INSERT INTO epanet.junctions
            (id, elevation, geometry, geometry_schematic)
            VALUES
            ('0',0,ST_GeometryFromText('POINT(0 0)',2154),
            ST_GeometryFromText('POLYGON((-1 -1,1 -1,1 1,-1 1,-1 -1))',2154))""")

    pcur.execute("""
        INSERT INTO epanet.junctions
            (id, elevation, geometry, geometry_schematic)
            VALUES
            ('1',1,ST_GeometryFromText('POINT(0 1)',2154),
            ST_GeometryFromText('POLYGON((0 0,2 0,2 2,0 2,0 0))',2154))""")

    pcur.execute("""
        CREATE TABLE epanet.pipes (
            hid serial PRIMARY KEY,
            id varchar,
            start_node varchar,
            end_node varchar,
            length float,
            diameter float,
            roughness float,
            minor_loss_coefficient float,
            status varchar,
            geometry geometry('LINESTRING',2154)
        )""")

    pcur.execute("""
        INSERT INTO epanet.pipes
            (id, start_node, end_node, length, diameter, geometry)
            VALUES
            ('0','0','1',1,2,ST_GeometryFromText('LINESTRING(1 0,0 1)',2154))""")

    pcur.commit()
    pcur.close()

    versioning.historize( pg_conn_info, 'epanet' )

    failed = False
    try:
        versioning.add_branch( pg_conn_info, 'epanet', 'trunk' )
    except:
        failed = True
    assert( failed )

    failed = False
    try:
        versioning.add_branch( pg_conn_info, 'epanet', 'mybranch', 'message', 'toto' )
    except:
        failed = True
    assert( failed )

    versioning.add_branch( pg_conn_info, 'epanet', 'mybranch', 'test msg' )


    pcur = versioning.Db(psycopg2.connect(pg_conn_info))
    pcur.execute("SELECT * FROM epanet_mybranch_rev_head.junctions")
    assert( len(pcur.fetchall()) == 2 )
    pcur.execute("SELECT * FROM epanet_mybranch_rev_head.pipes")
    assert( len(pcur.fetchall()) == 1 )

    ##versioning.add_revision_view( pg_conn_info, 'epanet', 'mybranch', 2)
    ##pcur.execute("SELECT * FROM epanet_mybranch_rev_2.junctions")
    ##assert( len(pcur.fetchall()) == 2 )
    ##pcur.execute("SELECT * FROM epanet_mybranch_rev_2.pipes")
    ##assert( len(pcur.fetchall()) == 1 )

    select_and_where_str =  versioning.rev_view_str( pg_conn_info, 'epanet', 'junctions','mybranch', 2)
    #print(select_and_where_str[0] + " WHERE " + select_and_where_str[1])
    pcur.execute(select_and_where_str[0] + " WHERE " + select_and_where_str[1])
    assert( len(pcur.fetchall()) == 2 )
    select_and_where_str =  versioning.rev_view_str( pg_conn_info, 'epanet', 'pipes','mybranch', 2)
    #print(select_and_where_str[0] + " WHERE " + select_and_where_str[1])
    pcur.execute(select_and_where_str[0] + " WHERE " + select_and_where_str[1])
    assert( len(pcur.fetchall()) == 1 )

    ##pcur.execute("SELECT ST_AsText(geometry), ST_AsText(geometry_schematic) FROM epanet_mybranch_rev_2.junctions")
    pcur.execute("SELECT ST_AsText(geometry), ST_AsText(geometry_schematic) FROM epanet.junctions")
    res = pcur.fetchall()
    assert( res[0][0] == 'POINT(0 0)' )
    assert( res[1][1] == 'POLYGON((0 0,2 0,2 2,0 2,0 0))' )


    wc = os.path.join(tmp_dir, 'wc_multiple_geometry_test.sqlite')
    spversioning = versioning.spatialite(wc, pg_conn_info)
    if os.path.isfile(wc): os.remove(wc)
    spversioning.checkout( ['epanet_trunk_rev_head.pipes','epanet_trunk_rev_head.junctions'] )


    scur = versioning.Db( dbapi2.connect(wc) )
    scur.execute("UPDATE junctions_view SET GEOMETRY = GeometryFromText('POINT(3 3)',2154)")
    scur.commit()
    scur.close()

    spversioning.commit( 'a commit msg' )

    pcur.execute("SELECT ST_AsText(geometry), ST_AsText(geometry_schematic) FROM epanet_trunk_rev_head.junctions")
    res = pcur.fetchall()
    for r in res: print(r)
    assert( res[0][0] == 'POINT(3 3)' )
    assert( res[1][1] == 'POLYGON((0 0,2 0,2 2,0 2,0 0))' )
    pcur.close()
def test(host, pguser):
    pg_conn_info = "dbname=epanet_test_db host=" + host + " user="******"dropdb --if-exists -h " + host + " -U " + pguser +
              " epanet_test_db")
    os.system("createdb -h " + host + " -U " + pguser + " epanet_test_db")
    os.system("psql -h " + host + " -U " + pguser +
              " epanet_test_db -c 'CREATE EXTENSION postgis'")

    pcur = versioning.Db(psycopg2.connect(pg_conn_info))
    pcur.execute("CREATE SCHEMA epanet")
    pcur.execute("""
        CREATE TABLE epanet.junctions (
            hid serial PRIMARY KEY,
            id varchar,
            elevation float,
            base_demand_flow float,
            demand_pattern_id varchar,
            geom geometry('POINT',2154)
        )""")

    pcur.execute("""
        INSERT INTO epanet.junctions
            (id, elevation, geom)
            VALUES
            ('0',0,ST_GeometryFromText('POINT(1 0)',2154))""")

    pcur.execute("""
        INSERT INTO epanet.junctions
            (id, elevation, geom)
            VALUES
            ('1',1,ST_GeometryFromText('POINT(0 1)',2154))""")

    pcur.execute("""
        CREATE TABLE epanet.pipes (
            hid serial PRIMARY KEY,
            id varchar,
            start_node varchar,
            end_node varchar,
            length float,
            diameter float,
            roughness float,
            minor_loss_coefficient float,
            status varchar,
            geom geometry('LINESTRING',2154)
        )""")

    pcur.execute("""
        INSERT INTO epanet.pipes
            (id, start_node, end_node, length, diameter, geom)
            VALUES
            ('0','0','1',1,2,ST_GeometryFromText('LINESTRING(1 0,0 1)',2154))"""
                 )

    pcur.commit()
    pcur.close()

    versioning.historize(pg_conn_info, 'epanet')

    failed = False
    try:
        versioning.add_branch(pg_conn_info, 'epanet', 'trunk')
    except:
        failed = True
    assert (failed)

    failed = False
    try:
        versioning.add_branch(pg_conn_info, 'epanet', 'mybranch', 'message',
                              'toto')
    except:
        failed = True
    assert (failed)

    versioning.add_branch(pg_conn_info, 'epanet', 'mybranch', 'test msg')

    pcur = versioning.Db(psycopg2.connect(pg_conn_info))
    pcur.execute("SELECT * FROM epanet_mybranch_rev_head.junctions")
    assert (len(pcur.fetchall()) == 2)
    pcur.execute("SELECT * FROM epanet_mybranch_rev_head.pipes")
    assert (len(pcur.fetchall()) == 1)

    ##versioning.add_revision_view( pg_conn_info, 'epanet', 'mybranch', 2)
    ##pcur.execute("SELECT * FROM epanet_mybranch_rev_2.junctions")
    ##assert( len(pcur.fetchall()) == 2 )
    ##pcur.execute("SELECT * FROM epanet_mybranch_rev_2.pipes")
    ##assert( len(pcur.fetchall()) == 1 )

    select_str, where_str = versioning.rev_view_str(pg_conn_info, 'epanet',
                                                    'junctions', 'mybranch', 2)
    pcur.execute(select_str + " WHERE " + where_str)
    assert (len(pcur.fetchall()) == 2)
    select_str, where_str = versioning.rev_view_str(pg_conn_info, 'epanet',
                                                    'pipes', 'mybranch', 2)
    pcur.execute(select_str + " WHERE " + where_str)
    assert (len(pcur.fetchall()) == 1)

    pcur.close()