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Add dependent lookup plugin (#2164)
* Add dependent lookup plugin. * Use correct YAML booleans. * Began complete rewrite. * Only match start of error msg. * Improve tests. * Work around old Jinja2 versions. * Fix metadata. * Fix filter name.
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Felix Fontein
GitHub
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4 changed files with 433 additions and 0 deletions
2
tests/integration/targets/lookup_dependent/aliases
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2
tests/integration/targets/lookup_dependent/aliases
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@ -0,0 +1,2 @@
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shippable/posix/group2
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skip/python2.6 # lookups are controller only, and we no longer support Python 2.6 on the controller
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179
tests/integration/targets/lookup_dependent/tasks/main.yml
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179
tests/integration/targets/lookup_dependent/tasks/main.yml
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@ -0,0 +1,179 @@
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---
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- name: Test 1
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set_fact:
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loop_result: >-
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{{
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query('community.general.dependent',
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dict(key1=[1, 2]),
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dict(key2='[item.key1 + 3, item.key1 + 6]'),
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dict(key3='[item.key1 + item.key2 * 10]'))
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}}
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- name: Check result of Test 1
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assert:
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that:
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- loop_result == expected_result
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vars:
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expected_result:
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- key1: 1
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key2: 4
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key3: 41
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- key1: 1
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key2: 7
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key3: 71
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- key1: 2
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key2: 5
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key3: 52
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- key1: 2
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key2: 8
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key3: 82
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- name: Test 2
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set_fact:
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loop_result: >-
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{{ query('community.general.dependent',
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dict([['a', [1, 2, 3]]]),
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dict([['b', '[1, 2, 3, 4] if item.a == 1 else [2, 3, 4] if item.a == 2 else [3, 4]']])) }}
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# The last expression could have been `range(item.a, 5)`, but that's not supported by all Jinja2 versions used in CI
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- name: Check result of Test 2
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assert:
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that:
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- loop_result == expected_result
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vars:
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expected_result:
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- a: 1
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b: 1
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- a: 1
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b: 2
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- a: 1
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b: 3
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- a: 1
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b: 4
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- a: 2
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b: 2
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- a: 2
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b: 3
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- a: 2
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b: 4
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- a: 3
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b: 3
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- a: 3
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b: 4
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- name: Test 3
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debug:
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var: item
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with_community.general.dependent:
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- var1:
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a:
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- 1
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- 2
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b:
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- 3
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- 4
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- var2: 'item.var1.value'
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- var3: 'dependent_lookup_test[item.var1.key ~ "_" ~ item.var2]'
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loop_control:
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label: "{{ [item.var1.key, item.var2, item.var3] }}"
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register: dependent
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vars:
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dependent_lookup_test:
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a_1:
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- A
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- B
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a_2:
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- C
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b_3:
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- D
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b_4:
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- E
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- F
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- G
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- name: Check result of Test 3
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assert:
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that:
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- (dependent.results | length) == 7
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- dependent.results[0].item.var1.key == "a"
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- dependent.results[0].item.var2 == 1
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- dependent.results[0].item.var3 == "A"
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- dependent.results[1].item.var1.key == "a"
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- dependent.results[1].item.var2 == 1
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- dependent.results[1].item.var3 == "B"
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- dependent.results[2].item.var1.key == "a"
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- dependent.results[2].item.var2 == 2
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- dependent.results[2].item.var3 == "C"
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- dependent.results[3].item.var1.key == "b"
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- dependent.results[3].item.var2 == 3
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- dependent.results[3].item.var3 == "D"
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- dependent.results[4].item.var1.key == "b"
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- dependent.results[4].item.var2 == 4
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- dependent.results[4].item.var3 == "E"
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- dependent.results[5].item.var1.key == "b"
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- dependent.results[5].item.var2 == 4
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- dependent.results[5].item.var3 == "F"
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- dependent.results[6].item.var1.key == "b"
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- dependent.results[6].item.var2 == 4
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- dependent.results[6].item.var3 == "G"
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- name: "Test 4: template failure"
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debug:
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msg: "{{ item }}"
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with_community.general.dependent:
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- a:
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- 1
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- 2
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- b: "[item.a + foo]"
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ignore_errors: true
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register: eval_error
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- name: Check result of Test 4
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assert:
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that:
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- eval_error is failed
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- eval_error.msg.startswith("Caught \"'foo' is undefined\" while evaluating ")
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- name: "Test 5: same variable name reused"
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debug:
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msg: "{{ item }}"
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with_community.general.dependent:
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- a: x
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- b: x
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ignore_errors: true
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register: eval_error
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- name: Check result of Test 5
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assert:
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that:
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- eval_error is failed
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- eval_error.msg.startswith("Caught \"'x' is undefined\" while evaluating ")
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- name: "Test 6: multi-value dict"
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debug:
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msg: "{{ item }}"
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with_community.general.dependent:
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- a: x
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b: x
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ignore_errors: true
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register: eval_error
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- name: Check result of Test 6
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assert:
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that:
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- eval_error is failed
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- eval_error.msg == 'Parameter 0 must be a one-element dictionary, got 2 elements'
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- name: "Test 7: empty dict"
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debug:
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msg: "{{ item }}"
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with_community.general.dependent:
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- {}
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ignore_errors: true
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register: eval_error
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- name: Check result of Test 7
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assert:
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that:
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- eval_error is failed
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- eval_error.msg == 'Parameter 0 must be a one-element dictionary, got 0 elements'
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44
tests/unit/plugins/lookup/test_dependent.py
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44
tests/unit/plugins/lookup/test_dependent.py
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# -*- coding: utf-8 -*-
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# (c) 2020-2021, Felix Fontein <felix@fontein.de>
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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# Make coding more python3-ish
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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from ansible_collections.community.internal_test_tools.tests.unit.compat.unittest import TestCase
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from ansible_collections.community.internal_test_tools.tests.unit.compat.mock import (
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MagicMock,
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)
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from ansible.plugins.loader import lookup_loader
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class TestLookupModule(TestCase):
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def setUp(self):
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templar = MagicMock()
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templar._loader = None
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self.lookup = lookup_loader.get("community.general.dependent", templar=templar)
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def test_empty(self):
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self.assertListEqual(self.lookup.run([], None), [])
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def test_simple(self):
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self.assertListEqual(
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self.lookup.run(
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[
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{'a': '[1, 2]'},
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{'b': '[item.a + 3, item.a + 6]'},
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{'c': '[item.a + item.b * 10]'},
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],
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{},
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),
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[
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{'a': 1, 'b': 4, 'c': 41},
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{'a': 1, 'b': 7, 'c': 71},
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{'a': 2, 'b': 5, 'c': 52},
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{'a': 2, 'b': 8, 'c': 82},
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],
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)
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