tests: Migrate dependency order/iteration testing to the format tests

Created new `tests/format/iteration.py` which tests the order in
which elements are iterated over in various scopes in a loaded
data model.

tests/pipeline/load.py

@@ -18,96 +18,6 @@ def test_load_simple(cli, datafiles):
     assert(result['configure-commands'][0] == 'pony')
 
 
-###############################################################
-#        Testing Element.dependencies() iteration             #
-###############################################################
-@pytest.mark.datafiles(os.path.join(DATA_DIR, 'iterate'))
-def test_iterate_scope_all(cli, datafiles):
-    basedir = os.path.join(datafiles.dirname, datafiles.basename)
-    elements = ['target.bst']
-
-    element_list = cli.get_pipeline(basedir, elements, scope='all')
-
-    assert(len(element_list) == 7)
-
-    assert(element_list[0] == "build-build.bst")
-    assert(element_list[1] == "run-build.bst")
-    assert(element_list[2] == "build.bst")
-    assert(element_list[3] == "dep-one.bst")
-    assert(element_list[4] == "run.bst")
-    assert(element_list[5] == "dep-two.bst")
-    assert(element_list[6] == "target.bst")
-
-
-@pytest.mark.datafiles(os.path.join(DATA_DIR, 'iterate'))
-def test_iterate_scope_run(cli, datafiles):
-    basedir = os.path.join(datafiles.dirname, datafiles.basename)
-    elements = ['target.bst']
-
-    element_list = cli.get_pipeline(basedir, elements, scope='run')
-
-    assert(len(element_list) == 4)
-
-    assert(element_list[0] == "dep-one.bst")
-    assert(element_list[1] == "run.bst")
-    assert(element_list[2] == "dep-two.bst")
-    assert(element_list[3] == "target.bst")
-
-
-@pytest.mark.datafiles(os.path.join(DATA_DIR, 'iterate'))
-def test_iterate_scope_build(cli, datafiles):
-    basedir = os.path.join(datafiles.dirname, datafiles.basename)
-    elements = ['target.bst']
-
-    element_list = cli.get_pipeline(basedir, elements, scope='build')
-
-    assert(len(element_list) == 3)
-
-    assert(element_list[0] == "dep-one.bst")
-    assert(element_list[1] == "run.bst")
-    assert(element_list[2] == "dep-two.bst")
-
-
-@pytest.mark.datafiles(os.path.join(DATA_DIR, 'iterate'))
-def test_iterate_scope_build_of_child(cli, datafiles):
-    basedir = os.path.join(datafiles.dirname, datafiles.basename)
-    elements = ['target.bst']
-
-    element_list = cli.get_pipeline(basedir, elements, scope='build')
-
-    # First pass, lets check dep-two
-    element = element_list[2]
-
-    # Pass two, let's look at these
-    element_list = cli.get_pipeline(basedir, [element], scope='build')
-
-    assert(len(element_list) == 2)
-
-    assert(element_list[0] == "run-build.bst")
-    assert(element_list[1] == "build.bst")
-
-
-@pytest.mark.datafiles(os.path.join(DATA_DIR, 'iterate'))
-def test_iterate_no_recurse(cli, datafiles):
-    basedir = os.path.join(datafiles.dirname, datafiles.basename)
-    elements = ['target.bst']
-
-    # We abuse the 'plan' scope here to ensure that we call
-    # element.dependencies() with recurse=False - currently, no `bst
-    # show` option does this directly.
-    element_list = cli.get_pipeline(basedir, elements, scope='plan')
-
-    assert(len(element_list) == 7)
-
-    assert(element_list[0] == 'build-build.bst')
-    assert(element_list[1] in ['build.bst', 'run-build.bst'])
-    assert(element_list[2] in ['build.bst', 'run-build.bst'])
-    assert(element_list[3] in ['dep-one.bst', 'run.bst', 'dep-two.bst'])
-    assert(element_list[4] in ['dep-one.bst', 'run.bst', 'dep-two.bst'])
-    assert(element_list[5] in ['dep-one.bst', 'run.bst', 'dep-two.bst'])
-    assert(element_list[6] == 'target.bst')
-
-
 @pytest.mark.datafiles(os.path.join(DATA_DIR, 'noloadref'))
 @pytest.mark.parametrize("ref_storage", [('inline'), ('project.refs')])
 def test_unsupported_load_ref(cli, datafiles, ref_storage):