fix unhashable formatted text

4 files changed, 246 insertions, 203 deletions

diff --git a/tests/test_naive_completion.py b/tests/test_naive_completion.py
index 761c8996..6560f82e 100644
--- a/tests/test_naive_completion.py
+++ b/tests/test_naive_completion.py
@@ -2,6 +2,7 @@ from __future__ import unicode_literals
 import pytest
 from prompt_toolkit.completion import Completion
 from prompt_toolkit.document import Document
+from utils import completions_to_set
 
 
 @pytest.fixture
@@ -15,32 +16,33 @@ def complete_event():
     from mock import Mock
     return Mock()
 
-
 def test_empty_string_completion(completer, complete_event):
     text = ''
     position = 0
-    result = set(completer.get_completions(
+    result = completions_to_set(completer.get_completions(
         Document(text=text, cursor_position=position),
         complete_event))
-    assert result == set(map(Completion, completer.all_completions))
+    assert result == completions_to_set(
+        map(Completion, completer.all_completions))
 
 
 def test_select_keyword_completion(completer, complete_event):
     text = 'SEL'
     position = len('SEL')
-    result = set(completer.get_completions(
+    result = completions_to_set(completer.get_completions(
         Document(text=text, cursor_position=position),
         complete_event))
-    assert result == set([Completion(text='SELECT', start_position=-3)])
+    assert result == completions_to_set(
+        [Completion(text='SELECT', start_position=-3)])
 
 
 def test_function_name_completion(completer, complete_event):
     text = 'SELECT MA'
     position = len('SELECT MA')
-    result = set(completer.get_completions(
+    result = completions_to_set(completer.get_completions(
         Document(text=text, cursor_position=position),
         complete_event))
-    assert result == set([
+    assert result == completions_to_set([
         Completion(text='MATERIALIZED VIEW', start_position=-2),
         Completion(text='MAX', start_position=-2),
         Completion(text='MAXEXTENTS', start_position=-2)])
@@ -49,42 +51,34 @@ def test_function_name_completion(completer, complete_event):
 def test_column_name_completion(completer, complete_event):
     text = 'SELECT  FROM users'
     position = len('SELECT ')
-    result = set(completer.get_completions(
+    result = completions_to_set(completer.get_completions(
         Document(text=text, cursor_position=position),
         complete_event))
-    assert result == set(map(Completion, completer.all_completions))
-
-
-def test_paths_completion(completer, complete_event):
-    text = '\i '
-    position = len(text)
-    result = set(completer.get_completions(
-        Document(text=text, cursor_position=position),
-        complete_event,
-        smart_completion=True))
-    assert result > set([Completion(text="setup.py", start_position=0)])
+    assert result == completions_to_set(
+        map(Completion, completer.all_completions))
 
 
 def test_alter_well_known_keywords_completion(completer, complete_event):
     text = 'ALTER '
     position = len(text)
-    result = set(completer.get_completions(
+    result = completions_to_set(completer.get_completions(
         Document(text=text, cursor_position=position),
         complete_event,
         smart_completion=True))
-    assert result > set([
+    assert result > completions_to_set([
         Completion(text="DATABASE", display_meta='keyword'),
         Completion(text="TABLE", display_meta='keyword'),
         Completion(text="SYSTEM", display_meta='keyword'),
     ])
-    assert Completion(text="CREATE", display_meta="keyword") not in result
+    assert completions_to_set(
+        [Completion(text="CREATE", display_meta="keyword")]) not in result
 
 
 def test_special_name_completion(completer, complete_event):
     text = '\\'
     position = len('\\')
-    result = set(completer.get_completions(
+    result = completions_to_set(completer.get_completions(
         Document(text=text, cursor_position=position),
         complete_event))
     # Special commands will NOT be suggested during naive completion mode.
-    assert result == set()
+    assert result == completions_to_set([])
diff --git a/tests/test_smart_completion_multiple_schemata.py b/tests/test_smart_completion_multiple_schemata.py
index c332cf74..bfadd1d0 100644
--- a/tests/test_smart_completion_multiple_schemata.py
+++ b/tests/test_smart_completion_multiple_schemata.py
@@ -4,6 +4,7 @@ import itertools
 from metadata import (MetaData, alias, name_join, fk_join, join,
     schema, table, function, wildcard_expansion, column,
     get_result, result_set, qual, no_qual, parametrize)
+from utils import completions_to_set
 
 metadata = {
     'tables': {
@@ -79,8 +80,9 @@ completers = testdata.get_completers(casing)
 @parametrize('completer', completers(filtr=True, casing=False, qualify=no_qual))
 @parametrize('table', ['users', '"users"'])
 def test_suggested_column_names_from_shadowed_visible_table(completer, table) :
-    result = result_set(completer, 'SELECT  FROM ' + table, len('SELECT '))
-    assert result == set(testdata.columns_functions_and_keywords('users'))
+    result = get_result(completer, 'SELECT  FROM ' + table, len('SELECT '))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns_functions_and_keywords('users'))
 
 
 @parametrize('completer', completers(filtr=True, casing=False, qualify=no_qual))
@@ -89,8 +91,8 @@ def test_suggested_column_names_from_shadowed_visible_table(completer, table) :
     'WITH users as (SELECT 1 AS foo) SELECT  from custom.users',
 ])
 def test_suggested_column_names_from_qualified_shadowed_table(completer, text):
-    result = result_set(completer, text, position = text.find('  ') + 1)
-    assert result == set(testdata.columns_functions_and_keywords(
+    result = get_result(completer, text, position=text.find('  ') + 1)
+    assert completions_to_set(result) == completions_to_set(testdata.columns_functions_and_keywords(
         'users', 'custom'
     ))
 
@@ -98,8 +100,10 @@ def test_suggested_column_names_from_qualified_shadowed_table(completer, text):
 @parametrize('completer', completers(filtr=True, casing=False, qualify=no_qual))
 @parametrize('text', ['WITH users as (SELECT 1 AS foo) SELECT  from users',])
 def test_suggested_column_names_from_cte(completer, text):
-    result = result_set(completer, text, text.find('  ') + 1)
-    assert result == set([column('foo')] + testdata.functions_and_keywords())
+    result = completions_to_set(get_result(
+        completer, text, text.find('  ') + 1))
+    assert result == completions_to_set(
+        [column('foo')] + testdata.functions_and_keywords())
 
 
 @parametrize('completer', completers(casing=False))
@@ -110,8 +114,8 @@ def test_suggested_column_names_from_cte(completer, text):
     JOIN custom.shipments ON '''
 ])
 def test_suggested_join_conditions(completer, text):
-    result = result_set(completer, text)
-    assert result == set([
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set([
         alias('users'),
         alias('shipments'),
         name_join('shipments.id = users.id'),
@@ -126,8 +130,8 @@ def test_suggested_join_conditions(completer, text):
     JOIN '''
 ), ('users', '"users"', 'Users')))
 def test_suggested_joins(completer, query, tbl):
-    result = result_set(completer, query.format(tbl))
-    assert result == set(
+    result = get_result(completer, query.format(tbl))
+    assert completions_to_set(result) == completions_to_set(
         testdata.schemas_and_from_clause_items() +
         [join('custom.shipments ON shipments.user_id = {0}.id'.format(tbl))]
     )
@@ -135,10 +139,10 @@ def test_suggested_joins(completer, query, tbl):
 
 @parametrize('completer', completers(filtr=True, casing=False, qualify=no_qual))
 def test_suggested_column_names_from_schema_qualifed_table(completer):
-    result = result_set(
+    result = get_result(
         completer, 'SELECT  from custom.products', len('SELECT ')
     )
-    assert result == set(testdata.columns_functions_and_keywords(
+    assert completions_to_set(result) == completions_to_set(testdata.columns_functions_and_keywords(
         'products', 'custom'
     ))
 
@@ -151,15 +155,17 @@ def test_suggested_column_names_from_schema_qualifed_table(completer):
 ])
 @parametrize('completer', completers(filtr=True, casing=False))
 def test_suggested_columns_with_insert(completer, text):
-    assert result_set(completer, text) == set(testdata.columns('orders'))
+    assert completions_to_set(get_result(completer, text)) == completions_to_set(
+        testdata.columns('orders'))
 
 
 @parametrize('completer', completers(filtr=True, casing=False, qualify=no_qual))
 def test_suggested_column_names_in_function(completer):
-    result = result_set(
+    result = get_result(
         completer, 'SELECT MAX( from custom.products', len('SELECT MAX(')
     )
-    assert result == set(testdata.columns('products', 'custom'))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('products', 'custom'))
 
 
 @parametrize('completer', completers(casing=False, aliasing=False))
@@ -178,8 +184,9 @@ def test_suggested_table_names_with_schema_dot(
     else:
         start_position = 0
 
-    result = result_set(completer, text)
-    assert result == set(testdata.from_clause_items('custom', start_position))
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
+        testdata.from_clause_items('custom', start_position))
 
 
 @parametrize('completer', completers(casing=False, aliasing=False))
@@ -196,36 +203,39 @@ def test_suggested_table_names_with_schema_dot2(
     else:
         start_position = 0
 
-    result = result_set(completer, text)
-    assert result == set(testdata.from_clause_items('Custom', start_position))
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
+        testdata.from_clause_items('Custom', start_position))
 
 
 @parametrize('completer', completers(filtr=True, casing=False))
 def test_suggested_column_names_with_qualified_alias(completer):
-    result = result_set(
+    result = get_result(
         completer, 'SELECT p. from custom.products p', len('SELECT p.')
     )
-    assert result == set(testdata.columns('products', 'custom'))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('products', 'custom'))
 
 
 @parametrize('completer', completers(filtr=True, casing=False, qualify=no_qual))
 def test_suggested_multiple_column_names(completer):
-    result = result_set(
+    result = get_result(
         completer, 'SELECT id,  from custom.products', len('SELECT id, ')
     )
-    assert result == set(testdata.columns_functions_and_keywords(
+    assert completions_to_set(result) == completions_to_set(testdata.columns_functions_and_keywords(
         'products', 'custom'
     ))
 
 
 @parametrize('completer', completers(filtr=True, casing=False))
 def test_suggested_multiple_column_names_with_alias(completer):
-    result = result_set(
+    result = get_result(
         completer,
         'SELECT p.id, p. from custom.products p',
         len('SELECT u.id, u.')
     )
-    assert result == set(testdata.columns('products', 'custom'))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('products', 'custom'))
 
 
 @parametrize('completer', completers(filtr=True, casing=False))
@@ -235,8 +245,8 @@ def test_suggested_multiple_column_names_with_alias(completer):
 ])
 def test_suggestions_after_on(completer, text):
     position = len('SELECT x.id, y.product_name FROM custom.products x JOIN custom.products y ON ')
-    result = result_set(completer, text, position)
-    assert result == set([
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set([
         alias('x'),
         alias('y'),
         name_join('y.price = x.price'),
@@ -247,22 +257,24 @@ def test_suggestions_after_on(completer, text):
 @parametrize('completer', completers())
 def test_suggested_aliases_after_on_right_side(completer):
     text = 'SELECT x.id, y.product_name FROM custom.products x JOIN custom.products y ON x.id = '
-    result = result_set(completer, text)
-    assert result == set([alias('x'), alias('y')])
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
+        [alias('x'), alias('y')])
 
 
 @parametrize('completer', completers(filtr=True, casing=False, aliasing=False))
 def test_table_names_after_from(completer):
     text = 'SELECT * FROM '
-    result = result_set(completer, text)
-    assert result == set(testdata.schemas_and_from_clause_items())
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
+        testdata.schemas_and_from_clause_items())
 
 
 @parametrize('completer', completers(filtr=True, casing=False))
 def test_schema_qualified_function_name(completer):
     text = 'SELECT custom.func'
-    result = result_set(completer, text)
-    assert result == set([
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set([
         function('func3()', -len('func')),
         function('set_returning_func()', -len('func'))])
 
@@ -275,18 +287,19 @@ def test_schema_qualified_function_name(completer):
     'ALTER TABLE foo ALTER COLUMN bar TYPE custom.',
 ])
 def test_schema_qualified_type_name(completer, text):
-    result = result_set(completer, text)
-    assert result == set(testdata.types('custom'))
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
+        testdata.types('custom'))
 
 
 @parametrize('completer', completers(filtr=True, casing=False))
 def test_suggest_columns_from_aliased_set_returning_function(completer):
-    result = result_set(
+    result = get_result(
         completer,
         'select f. from custom.set_returning_func() f',
         len('select f.')
     )
-    assert result == set(
+    assert completions_to_set(result) == completions_to_set(
         testdata.columns('set_returning_func', 'custom', 'functions'))
 
 
@@ -408,8 +421,9 @@ def test_wildcard_column_expansion_with_two_tables_and_parent(completer):
 ])
 def test_suggest_columns_from_unquoted_table(completer, text):
     position = len('SELECT U.')
-    result = result_set(completer, text, position)
-    assert result == set(testdata.columns('users', 'custom'))
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('users', 'custom'))
 
 
 @parametrize('completer', completers(filtr=True, casing=False))
@@ -419,8 +433,9 @@ def test_suggest_columns_from_unquoted_table(completer, text):
 ])
 def test_suggest_columns_from_quoted_table(completer, text):
     position = len('SELECT U.')
-    result = result_set(completer, text, position)
-    assert result == set(testdata.columns('Users', 'custom'))
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('Users', 'custom'))
 
 texts = ['SELECT * FROM ', 'SELECT * FROM public.Orders O CROSS JOIN ']
 
@@ -428,15 +443,16 @@ texts = ['SELECT * FROM ', 'SELECT * FROM public.Orders O CROSS JOIN ']
 @parametrize('completer', completers(filtr=True, casing=False, aliasing=False))
 @parametrize('text', texts)
 def test_schema_or_visible_table_completion(completer, text):
-    result = result_set(completer, text)
-    assert result == set(testdata.schemas_and_from_clause_items())
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
+        testdata.schemas_and_from_clause_items())
 
 
 @parametrize('completer', completers(aliasing=True, casing=False, filtr=True))
 @parametrize('text', texts)
 def test_table_aliases(completer, text):
-    result = result_set(completer, text)
-    assert result == set(testdata.schemas() + [
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(testdata.schemas() + [
         table('users u'),
         table('orders o' if text == 'SELECT * FROM ' else 'orders o2'),
         table('"select" s'),
@@ -447,8 +463,8 @@ def test_table_aliases(completer, text):
 @parametrize('completer', completers(aliasing=True, casing=True, filtr=True))
 @parametrize('text', texts)
 def test_aliases_with_casing(completer, text):
-    result = result_set(completer, text)
-    assert result == set(cased_schemas + [
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(cased_schemas + [
         table('users u'),
         table('Orders O' if text == 'SELECT * FROM ' else 'Orders O2'),
         table('"select" s'),
@@ -459,8 +475,8 @@ def test_aliases_with_casing(completer, text):
 @parametrize('completer', completers(aliasing=False, casing=True, filtr=True))
 @parametrize('text', texts)
 def test_table_casing(completer, text):
-    result = result_set(completer, text)
-    assert result == set(cased_schemas + [
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(cased_schemas + [
         table('users'),
         table('Orders'),
         table('"select"'),
@@ -534,7 +550,7 @@ def test_function_alias_search_without_aliases(completer):
     first = result[0]
     assert first.start_position == -3
     assert first.text == 'extract_entry_symbols()'
-    assert first.display == 'extract_entry_symbols(_entryid)'
+    assert first.display_text == 'extract_entry_symbols(_entryid)'
 
 
 @parametrize('completer', completers())
@@ -544,7 +560,7 @@ def test_function_alias_search_with_aliases(completer):
     first = result[0]
     assert first.start_position == -2
     assert first.text == 'enter_entry(_title := , _text := )'
-    assert first.display == 'enter_entry(_title, _text)'
+    assert first.display_text == 'enter_entry(_title, _text)'
 
 
 @parametrize('completer',completers(filtr=True, casing=True, qualify=no_qual))
@@ -576,8 +592,8 @@ def test_schema_object_order(completer):
 @parametrize('completer', completers(casing=False, filtr=False, aliasing=False))
 def test_all_schema_objects(completer):
     text = ('SELECT * FROM ')
-    result = result_set(completer, text)
-    assert result >= set(
+    result = get_result(completer, text)
+    assert completions_to_set(result) >= completions_to_set(
         [table(x) for x in ('orders', '"select"', 'custom.shipments')]
         + [function(x + '()') for x in ('func2',)]
     )
@@ -586,8 +602,8 @@ def test_all_schema_objects(completer):
 @parametrize('completer', completers(filtr=False, aliasing=False, casing=True))
 def test_all_schema_objects_with_casing(completer):
     text = 'SELECT * FROM '
-    result = result_set(completer, text)
-    assert result >= set(
+    result = get_result(completer, text)
+    assert completions_to_set(result) >= completions_to_set(
         [table(x) for x in ('Orders', '"select"', 'CUSTOM.shipments')]
         + [function(x + '()') for x in ('func2',)]
     )
@@ -596,8 +612,8 @@ def test_all_schema_objects_with_casing(completer):
 @parametrize('completer', completers(casing=False, filtr=False, aliasing=True))
 def test_all_schema_objects_with_aliases(completer):
     text = ('SELECT * FROM ')
-    result = result_set(completer, text)
-    assert result >= set(
+    result = get_result(completer, text)
+    assert completions_to_set(result) >= completions_to_set(
         [table(x) for x in ('orders o', '"select" s', 'custom.shipments s')]
         + [function(x) for x in ('func2() f',)]
     )
@@ -606,8 +622,8 @@ def test_all_schema_objects_with_aliases(completer):
 @parametrize('completer', completers(casing=False, filtr=False, aliasing=True))
 def test_set_schema(completer):
     text = ('SET SCHEMA ')
-    result = result_set(completer, text)
-    assert result == set([
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set([
         schema(u"'blog'"),
         schema(u"'Custom'"),
         schema(u"'custom'"),
diff --git a/tests/test_smart_completion_public_schema_only.py b/tests/test_smart_completion_public_schema_only.py
index 0b8fbcc4..9d503245 100644
--- a/tests/test_smart_completion_public_schema_only.py
+++ b/tests/test_smart_completion_public_schema_only.py
@@ -4,6 +4,8 @@ from metadata import (MetaData, alias, name_join, fk_join, join, keyword,
     schema, table, view, function, column, wildcard_expansion,
     get_result, result_set, qual, no_qual, parametrize)
 from prompt_toolkit.completion import Completion
+from utils import completions_to_set
+
 
 
 metadata = {
@@ -98,20 +100,22 @@ def test_drop_alter_function(completer, action):
 
 @parametrize('completer', completers())
 def test_empty_string_completion(completer):
-    result = result_set(completer, '')
-    assert set(testdata.keywords() + testdata.specials()) == result
+    result = get_result(completer, '')
+    assert completions_to_set(
+        testdata.keywords() + testdata.specials()) == completions_to_set(result)
 
 
 @parametrize('completer', completers())
 def test_select_keyword_completion(completer):
-    result = result_set(completer, 'SEL')
-    assert result == set([keyword('SELECT', -3)])
+    result = get_result(completer, 'SEL')
+    assert completions_to_set(result) == completions_to_set(
+        [keyword('SELECT', -3)])
 
 
 @parametrize('completer', completers())
 def test_builtin_function_name_completion(completer):
-    result = result_set(completer, 'SELECT MA')
-    assert result == set([
+    result = get_result(completer, 'SELECT MA')
+    assert completions_to_set(result) == completions_to_set([
         function('MAX', -2),
         keyword('MAXEXTENTS', -2), keyword('MATERIALIZED VIEW', -2)
     ])
@@ -128,8 +132,8 @@ def test_builtin_function_matches_only_at_start(completer):
 
 @parametrize('completer', completers(casing=False, aliasing=False))
 def test_user_function_name_completion(completer):
-    result = result_set(completer, 'SELECT cu')
-    assert result == set([
+    result = get_result(completer, 'SELECT cu')
+    assert completions_to_set(result) == completions_to_set([
         function('custom_fun()', -2),
         function('_custom_fun()', -2),
         function('custom_func1()', -2),
@@ -140,8 +144,8 @@ def test_user_function_name_completion(completer):
 
 @parametrize('completer', completers(casing=False, aliasing=False))
 def test_user_function_name_completion_matches_anywhere(completer):
-    result = result_set(completer, 'SELECT om')
-    assert result == set([
+    result = get_result(completer, 'SELECT om')
+    assert completions_to_set(result) == completions_to_set([
         function('custom_fun()', -2),
         function('_custom_fun()', -2),
         function('custom_func1()', -2),
@@ -150,22 +154,23 @@ def test_user_function_name_completion_matches_anywhere(completer):
 
 @parametrize('completer', completers(casing=True))
 def test_list_functions_for_special(completer):
-    result = result_set(completer, r'\df ')
-    assert result == set(
+    result = get_result(completer, r'\df ')
+    assert completions_to_set(result) == completions_to_set(
         [schema('PUBLIC')] + [function(f) for f in cased_func_names]
     )
 
 
 @parametrize('completer', completers(casing=False, qualify=no_qual))
 def test_suggested_column_names_from_visible_table(completer):
-    result = result_set(completer, 'SELECT  from users', len('SELECT '))
-    assert result == set(testdata.columns_functions_and_keywords('users'))
+    result = get_result(completer, 'SELECT  from users', len('SELECT '))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns_functions_and_keywords('users'))
 
 
 @parametrize('completer', completers(casing=True, qualify=no_qual))
 def test_suggested_cased_column_names(completer):
-    result = result_set(completer, 'SELECT  from users', len('SELECT '))
-    assert result == set(cased_funcs + cased_users_cols
+    result = get_result(completer, 'SELECT  from users', len('SELECT '))
+    assert completions_to_set(result) == completions_to_set(cased_funcs + cased_users_cols
         + testdata.builtin_functions() + testdata.keywords())
 
 
@@ -177,8 +182,9 @@ def test_suggested_cased_column_names(completer):
 def test_suggested_auto_qualified_column_names(text, completer):
     position = text.index('  ') + 1
     cols = [column(c.lower()) for c in cased_users_col_names]
-    result = result_set(completer, text, position)
-    assert result == set(cols + testdata.functions_and_keywords())
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set(
+        cols + testdata.functions_and_keywords())
 
 
 @parametrize('completer', completers(casing=False, qualify=qual))
@@ -190,8 +196,9 @@ def test_suggested_auto_qualified_column_names_two_tables(text, completer):
     position = text.index('  ') + 1
     cols = [column('U.' + c.lower()) for c in cased_users_col_names]
     cols += [column('"Users".' + c.lower()) for c in cased_users2_col_names]
-    result = result_set(completer, text, position)
-    assert result == set(cols + testdata.functions_and_keywords())
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set(
+        cols + testdata.functions_and_keywords())
 
 
 @parametrize('completer', completers(casing=True, qualify=['always']))
@@ -201,8 +208,8 @@ def test_suggested_auto_qualified_column_names_two_tables(text, completer):
 ])
 def test_no_column_qualification(text, completer):
     cols = [column(c) for c in cased_users_col_names]
-    result = result_set(completer, text)
-    assert result == set(cols)
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(cols)
 
 
 @parametrize('completer', completers(casing=True, qualify=['always']))
@@ -212,65 +219,71 @@ def test_suggested_cased_always_qualified_column_names(
     text = 'SELECT  from users'
     position = len('SELECT ')
     cols = [column('users.' + c) for c in cased_users_col_names]
-    result = result_set(completer, text, position)
-    assert result == set(cased_funcs + cols
-        + testdata.builtin_functions() + testdata.keywords())
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set(cased_funcs + cols
+                                                            + testdata.builtin_functions() + testdata.keywords())
 
 
 @parametrize('completer', completers(casing=False, qualify=no_qual))
 def test_suggested_column_names_in_function(completer):
-    result = result_set(
+    result = get_result(
         completer, 'SELECT MAX( from users', len('SELECT MAX(')
     )
-    assert result == set(testdata.columns('users'))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('users'))
 
 
 @parametrize('completer', completers(casing=False))
 def test_suggested_column_names_with_table_dot(completer):
-    result = result_set(
+    result = get_result(
         completer, 'SELECT users. from users', len('SELECT users.')
     )
-    assert result == set(testdata.columns('users'))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('users'))
 
 
 @parametrize('completer', completers(casing=False))
 def test_suggested_column_names_with_alias(completer):
-    result = result_set(completer, 'SELECT u. from users u', len('SELECT u.'))
-    assert result == set(testdata.columns('users'))
+    result = get_result(completer, 'SELECT u. from users u', len('SELECT u.'))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('users'))
 
 
 @parametrize('completer', completers(casing=False, qualify=no_qual))
 def test_suggested_multiple_column_names(completer):
-    result = result_set(
+    result = get_result(
         completer, 'SELECT id,  from users u', len('SELECT id, ')
     )
-    assert result == set(testdata.columns_functions_and_keywords('users'))
+    assert completions_to_set(result) == completions_to_set(
+        (testdata.columns_functions_and_keywords('users')))
 
 
 @parametrize('completer', completers(casing=False))
 def test_suggested_multiple_column_names_with_alias(completer):
-    result = result_set(
+    result = get_result(
         completer, 'SELECT u.id, u. from users u', len('SELECT u.id, u.')
     )
-    assert result == set(testdata.columns('users'))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('users'))
 
 
 @parametrize('completer', completers(casing=True))
 def test_suggested_cased_column_names_with_alias(completer):
-    result = result_set(
+    result = get_result(
         completer, 'SELECT u.id, u. from users u', len('SELECT u.id, u.')
     )
-    assert result == set(cased_users_cols)
+    assert completions_to_set(result) == completions_to_set(cased_users_cols)
 
 
 @parametrize('completer', completers(casing=False))
 def test_suggested_multiple_column_names_with_dot(completer):
-    result = result_set(
+    result = get_result(
         completer,
         'SELECT users.id, users. from users u',
         len('SELECT users.id, users.')
     )
-    assert result == set(testdata.columns('users'))
+    assert completions_to_set(result) == completions_to_set(
+        testdata.columns('users'))
 
 
 @parametrize('completer', completers(casing=False))
@@ -278,7 +291,7 @@ def test_suggest_columns_after_three_way_join(completer):
     text = '''SELECT * FROM users u1
               INNER JOIN users u2 ON u1.id = u2.id
               INNER JOIN users u3 ON u2.id = u3.'''
-    result = result_set(completer, text)
+    result = get_result(completer, text)
     assert (column('id') in result)
 
 
@@ -304,8 +317,8 @@ join_condition_texts = [
 @parametrize('completer', completers(casing=False))
 @parametrize('text', join_condition_texts)
 def test_suggested_join_conditions(completer, text):
-    result = result_set(completer, text)
-    assert result == set([
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set([
         alias('U'), alias('U2'), fk_join('U2.userid = U.id')
     ])
 
@@ -313,8 +326,8 @@ def test_suggested_join_conditions(completer, text):
 @parametrize('completer', completers(casing=True))
 @parametrize('text', join_condition_texts)
 def test_cased_join_conditions(completer, text):
-    result = result_set(completer, text)
-    assert result == set(
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
         [alias('U'), alias('U2'), fk_join('U2.UserID = U.ID')]
     )
 
@@ -347,8 +360,8 @@ def test_suggested_join_conditions_with_same_table_twice(completer, text):
     'SELECT * FROM users JOIN users u2 on foo.'
 ])
 def test_suggested_join_conditions_with_invalid_qualifier(completer, text):
-    result = result_set(completer, text)
-    assert result == set()
+    result = get_result(completer, text)
+    assert result == []
 
 
 @parametrize('completer', completers(casing=False))
@@ -357,8 +370,9 @@ def test_suggested_join_conditions_with_invalid_qualifier(completer, text):
     ('SELECT * FROM users JOIN nontable nt on ', 'nt')
 ])
 def test_suggested_join_conditions_with_invalid_table(completer, text, ref):
-    result = result_set(completer, text)
-    assert result == set([alias('users'), alias(ref)])
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
+        [alias('users'), alias(ref)])
 
 
 @parametrize('completer', completers(casing=False, aliasing=False))
@@ -369,7 +383,7 @@ def test_suggested_join_conditions_with_invalid_table(completer, text, ref):
     'SELECT * FROM "Users" u JOIN id',
 ])
 def test_suggested_joins_fuzzy(completer, text):
-    result = result_set(completer, text)
+    result = get_result(completer, text)
     last_word = text.split()[-1]
     expected = join('users ON users.id = u.userid', -len(last_word))
     assert expected in result
@@ -394,8 +408,8 @@ join_texts = [
 @parametrize('completer', completers(casing=False, aliasing=False))
 @parametrize('text', join_texts)
 def test_suggested_joins(completer, text):
-    result = result_set(completer, text)
-    assert result == set(
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
         testdata.schemas_and_from_clause_items() + [
         join('"Users" ON "Users".userid = Users.id'),
         join('users users2 ON users2.id = Users.parentid'),
@@ -407,8 +421,8 @@ def test_suggested_joins(completer, text):
 @parametrize('completer', completers(casing=True, aliasing=False))
 @parametrize('text', join_texts)
 def test_cased_joins(completer, text):
-    result = result_set(completer, text)
-    assert result == set([schema('PUBLIC')] + cased_rels + [
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set([schema('PUBLIC')] + cased_rels + [
         join('"Users" ON "Users".UserID = Users.ID'),
         join('Users Users2 ON Users2.ID = Users.PARENTID'),
         join('Users Users2 ON Users2.PARENTID = Users.ID'),
@@ -418,8 +432,8 @@ def test_cased_joins(completer, text):
 @parametrize('completer', completers(casing=False, aliasing=True))
 @parametrize('text', join_texts)
 def test_aliased_joins(completer, text):
-    result = result_set(completer, text)
-    assert result == set(testdata.schemas() + aliased_rels + [
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(testdata.schemas() + aliased_rels + [
         join('"Users" U ON U.userid = Users.id'),
         join('users u ON u.id = Users.parentid'),
         join('users u ON u.parentid = Users.id'),
@@ -435,8 +449,8 @@ def test_aliased_joins(completer, text):
     LEFT JOIN '''
 ])
 def test_suggested_joins_quoted_schema_qualified_table(completer, text):
-    result = result_set(completer, text)
-    assert result == set(
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
         testdata.schemas_and_from_clause_items() +
         [join('public.users ON users.id = "Users".userid')]
     )
@@ -449,8 +463,8 @@ def test_suggested_joins_quoted_schema_qualified_table(completer, text):
 ])
 def test_suggested_aliases_after_on(completer, text):
     position = len('SELECT u.name, o.id FROM users u JOIN orders o ON ')
-    result = result_set(completer, text, position)
-    assert result == set([
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set([
         alias('u'),
         name_join('o.id = u.id'),
         name_join('o.email = u.email'),
@@ -466,8 +480,9 @@ def test_suggested_aliases_after_on_right_side(completer, text):
     position = len(
         'SELECT u.name, o.id FROM users u JOIN orders o ON o.user_id = '
     )
-    result = result_set(completer, text, position)
-    assert result == set([alias('u'), alias('o')])
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set(
+        [alias('u'), alias('o')])
 
 
 @parametrize('completer', completers(casing=False))
@@ -477,8 +492,8 @@ def test_suggested_aliases_after_on_right_side(completer, text):
 ])
 def test_suggested_tables_after_on(completer, text):
     position = len('SELECT users.name, orders.id FROM users JOIN orders ON ')
-    result = result_set(completer, text, position)
-    assert result == set([
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set([
         name_join('orders.id = users.id'),
         name_join('orders.email = users.email'),
         alias('users'),
@@ -493,8 +508,9 @@ def test_suggested_tables_after_on(completer, text):
 ])
 def test_suggested_tables_after_on_right_side(completer, text):
     position = len('SELECT users.name, orders.id FROM users JOIN orders ON orders.user_id = ')
-    result = result_set(completer, text, position)
-    assert result == set([alias('users'), alias('orders')])
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set(
+        [alias('users'), alias('orders')])
 
 
 @parametrize('completer', completers(casing=False))
@@ -503,8 +519,9 @@ def test_suggested_tables_after_on_right_side(completer, text):
     'SELECT * FROM users INNER JOIN orders USING(',
 ])
 def test_join_using_suggests_common_columns(completer, text):
-    result = result_set(completer, text)
-    assert result == set([column('id'), column('email')])
+    result = get_result(completer, text)
+    assert completions_to_set(result) == completions_to_set(
+        [column('id'), column('email')])
 
 
 @parametrize('completer', completers(casing=False))
@@ -516,8 +533,9 @@ def test_join_using_suggests_common_columns(completer, text):
 ])
 def test_join_using_suggests_from_last_table(completer, text):
     position = text.index('()') + 1
-    result = result_set(completer, text, position)
-    assert result == set([column('id'), column('email')])
+    result = get_result(completer, text, position)
+    assert completions_to_set(result) == completions_to_set(
+        [column('id'), column('email')])
 
 
 @parametrize('completer', completers(casing=False))
@@ -526,8 +544,9 @@ def test_join_using_suggests_from_last_table(completer, text):
     'SELECT * FROM users INNER JOIN orders USING(id,',
 ])
 def test_join_using_suggests_columns_after_first_column(completer, text):
-    result = result_set(completer, text)
-