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test_Tester.lua
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test_Tester.lua
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require 'torch'
local tester = torch.Tester()
local MESSAGE = "a really useful informative error message"
local subtester = torch.Tester()
-- The message only interests us in case of failure
subtester._success = function(self) return true, MESSAGE end
subtester._failure = function(self, message) return false, message end
local tests = torch.TestSuite()
local test_name_passed_to_setUp
local calls_to_setUp = 0
local calls_to_tearDown = 0
local originalIoWrite = io.write
local function disableIoWrite()
io.write = function() end
end
local function enableIoWrite()
io.write = originalIoWrite
end
local function meta_assert_success(success, message)
tester:assert(success == true, "assert wasn't successful")
tester:assert(string.find(message, MESSAGE) ~= nil, "message doesn't match")
end
local function meta_assert_failure(success, message)
tester:assert(success == false, "assert didn't fail")
tester:assert(string.find(message, MESSAGE) ~= nil, "message doesn't match")
end
function tests.really_test_assert()
assert((subtester:assert(true, MESSAGE)),
"subtester:assert doesn't actually work!")
assert(not (subtester:assert(false, MESSAGE)),
"subtester:assert doesn't actually work!")
end
function tests.setEarlyAbort()
disableIoWrite()
for _, earlyAbort in ipairs{false, true} do
local myTester = torch.Tester()
local invokedCount = 0
local myTests = {}
function myTests.t1()
invokedCount = invokedCount + 1
myTester:assert(false)
end
myTests.t2 = myTests.t1
myTester:setEarlyAbort(earlyAbort)
myTester:add(myTests)
pcall(myTester.run, myTester)
tester:assert(invokedCount == (earlyAbort and 1 or 2),
"wrong number of tests invoked for use with earlyAbort")
end
enableIoWrite()
end
function tests.setRethrowErrors()
disableIoWrite()
local myTester = torch.Tester()
myTester:setRethrowErrors(true)
myTester:add(function() error("a throw") end)
tester:assertErrorPattern(function() myTester:run() end,
"a throw",
"error should be rethrown")
enableIoWrite()
end
function tests.disable()
disableIoWrite()
for disableCount = 1, 2 do
local myTester = torch.Tester()
local tests = {}
local test1Invoked = false
local test2Invoked = false
function tests.test1()
test1Invoked = true
end
function tests.test2()
test2Invoked = true
end
myTester:add(tests)
if disableCount == 1 then
myTester:disable('test1'):run()
tester:assert((not test1Invoked) and test2Invoked,
"disabled test shouldn't have been invoked")
else
myTester:disable({'test1', 'test2'}):run()
tester:assert((not test1Invoked) and (not test2Invoked),
"disabled tests shouldn't have been invoked")
end
end
enableIoWrite()
end
function tests.assert()
meta_assert_success(subtester:assert(true, MESSAGE))
meta_assert_failure(subtester:assert(false, MESSAGE))
end
local function testEqNe(eqExpected, ...)
if eqExpected then
meta_assert_success(subtester:eq(...))
meta_assert_failure(subtester:ne(...))
else
meta_assert_failure(subtester:eq(...))
meta_assert_success(subtester:ne(...))
end
end
--[[ Test :assertGeneralEq and :assertGeneralNe (also known as :eq and :ne).
Note that in-depth testing of testing of many specific types of data (such as
Tensor) is covered below, when we test specific functions (such as
:assertTensorEq). This just does a general check, as well as testing of testing
of mixed datatypes.
]]
function tests.assertGeneral()
local one = torch.Tensor{1}
testEqNe(true, one, one, MESSAGE)
testEqNe(false, one, 1, MESSAGE)
testEqNe(true, "hi", "hi", MESSAGE)
testEqNe(true, {one, 1}, {one, 1}, MESSAGE)
testEqNe(true, {{{one}}}, {{{one}}}, MESSAGE)
testEqNe(false, {{{one}}}, {{one}}, MESSAGE)
testEqNe(true, torch.Storage{1}, torch.Storage{1}, MESSAGE)
testEqNe(false, torch.FloatStorage{1}, torch.LongStorage{1}, MESSAGE)
testEqNe(false, torch.Storage{1}, torch.Storage{1, 2}, MESSAGE)
testEqNe(false, "one", 1, MESSAGE)
testEqNe(false, {one}, {one + torch.Tensor{1e-10}}, MESSAGE)
testEqNe(true, {one}, {one + torch.Tensor{1e-10}}, 1e-9, MESSAGE)
end
function tests.assertlt()
meta_assert_success(subtester:assertlt(1, 2, MESSAGE))
meta_assert_failure(subtester:assertlt(2, 1, MESSAGE))
meta_assert_failure(subtester:assertlt(1, 1, MESSAGE))
end
function tests.assertgt()
meta_assert_success(subtester:assertgt(2, 1, MESSAGE))
meta_assert_failure(subtester:assertgt(1, 2, MESSAGE))
meta_assert_failure(subtester:assertgt(1, 1, MESSAGE))
end
function tests.assertle()
meta_assert_success(subtester:assertle(1, 2, MESSAGE))
meta_assert_failure(subtester:assertle(2, 1, MESSAGE))
meta_assert_success(subtester:assertle(1, 1, MESSAGE))
end
function tests.assertge()
meta_assert_success(subtester:assertge(2, 1, MESSAGE))
meta_assert_failure(subtester:assertge(1, 2, MESSAGE))
meta_assert_success(subtester:assertge(1, 1, MESSAGE))
end
function tests.asserteq()
meta_assert_success(subtester:asserteq(1, 1, MESSAGE))
meta_assert_failure(subtester:asserteq(1, 2, MESSAGE))
end
function tests.assertalmosteq()
meta_assert_success(subtester:assertalmosteq(1, 1, MESSAGE))
meta_assert_success(subtester:assertalmosteq(1, 1 + 1e-17, MESSAGE))
meta_assert_success(subtester:assertalmosteq(1, 2, 2, MESSAGE))
meta_assert_failure(subtester:assertalmosteq(1, 2, MESSAGE))
meta_assert_failure(subtester:assertalmosteq(1, 3, 1, MESSAGE))
end
function tests.assertne()
meta_assert_success(subtester:assertne(1, 2, MESSAGE))
meta_assert_failure(subtester:assertne(1, 1, MESSAGE))
end
-- The `alsoTestEq` flag is provided to test :eq in addition to :assertTensorEq.
-- The behaviour of the two isn't always the same due to handling of tensors of
-- different dimensions but the same number of elements.
local function testTensorEqNe(eqExpected, alsoTestEq, ...)
if eqExpected then
meta_assert_success(subtester:assertTensorEq(...))
meta_assert_failure(subtester:assertTensorNe(...))
if alsoTestEq then
meta_assert_success(subtester:eq(...))
meta_assert_failure(subtester:ne(...))
end
else
meta_assert_failure(subtester:assertTensorEq(...))
meta_assert_success(subtester:assertTensorNe(...))
if alsoTestEq then
meta_assert_failure(subtester:eq(...))
meta_assert_success(subtester:ne(...))
end
end
end
function tests.assertTensor_types()
local allTypes = {
torch.ByteTensor,
torch.CharTensor,
torch.ShortTensor,
torch.IntTensor,
torch.LongTensor,
torch.FloatTensor,
torch.DoubleTensor,
}
for _, tensor1 in ipairs(allTypes) do
for _, tensor2 in ipairs(allTypes) do
local t1 = tensor1():ones(10)
local t2 = tensor2():ones(10)
testTensorEqNe(tensor1 == tensor2, true, t1, t2, 1e-6, MESSAGE)
end
end
testTensorEqNe(false, true, torch.FloatTensor(), torch.LongTensor(), MESSAGE)
end
function tests.assertTensor_sizes()
local t = torch.Tensor() -- no dimensions
local t2 = torch.ones(2)
local t3 = torch.ones(3)
local t12 = torch.ones(1, 2)
assert(subtester._assertTensorEqIgnoresDims == true) -- default state
testTensorEqNe(false, false, t, t2, 1e-6, MESSAGE)
testTensorEqNe(false, false, t, t3, 1e-6, MESSAGE)
testTensorEqNe(false, false, t, t12, 1e-6, MESSAGE)
testTensorEqNe(false, false, t2, t3, 1e-6, MESSAGE)
testTensorEqNe(true, false, t2, t12, 1e-6, MESSAGE)
testTensorEqNe(false, false, t3, t12, 1e-6, MESSAGE)
subtester._assertTensorEqIgnoresDims = false
testTensorEqNe(false, true, t, t2, 1e-6, MESSAGE)
testTensorEqNe(false, true, t, t3, 1e-6, MESSAGE)
testTensorEqNe(false, true, t, t12, 1e-6, MESSAGE)
testTensorEqNe(false, true, t2, t3, 1e-6, MESSAGE)
testTensorEqNe(false, true, t2, t12, 1e-6, MESSAGE)
testTensorEqNe(false, true, t3, t12, 1e-6, MESSAGE)
subtester._assertTensorEqIgnoresDims = true -- reset back
end
function tests.assertTensor_epsilon()
local t1 = torch.rand(100, 100)
local t2 = torch.rand(100, 100) * 1e-5
local t3 = t1 + t2
testTensorEqNe(true, true, t1, t3, 1e-4, MESSAGE)
testTensorEqNe(false, true, t1, t3, 1e-6, MESSAGE)
end
function tests.assertTensor_arg()
local one = torch.Tensor{1}
tester:assertErrorPattern(
function() subtester:assertTensorEq(one, 2) end,
"Second argument should be a Tensor")
-- Test that assertTensorEq support message and tolerance in either ordering
tester:assertNoError(
function() subtester:assertTensorEq(one, one, 0.1, MESSAGE) end)
tester:assertNoError(
function() subtester:assertTensorEq(one, one, MESSAGE, 0.1) end)
end
function tests.assertTensor()
local t1 = torch.randn(100, 100)
local t2 = t1:clone()
local t3 = torch.randn(100, 100)
testTensorEqNe(true, true, t1, t2, 1e-6, MESSAGE)
testTensorEqNe(false, true, t1, t3, 1e-6, MESSAGE)
testTensorEqNe(true, true, torch.Tensor(), torch.Tensor(), MESSAGE)
end
-- Check that calling assertTensorEq with two tensors with the same content but
-- different dimensions gives a warning.
function tests.assertTensorDimWarning()
local myTester = torch.Tester()
myTester:add(
function()
myTester:assertTensorEq(torch.Tensor{{1}}, torch.Tensor{1})
end)
local warningGiven = false
io.write = function(s)
if string.match(s, 'but different dimensions') then
warningGiven = true
end
end
myTester:run()
enableIoWrite()
tester:assert(warningGiven,
"Calling :assertTensorEq({{1}}, {1}) should give a warning")
end
local function testTableEqNe(eqExpected, ...)
if eqExpected then
meta_assert_success(subtester:assertTableEq(...))
meta_assert_failure(subtester:assertTableNe(...))
meta_assert_success(subtester:eq(...))
meta_assert_failure(subtester:ne(...))
else
meta_assert_failure(subtester:assertTableEq(...))
meta_assert_success(subtester:assertTableNe(...))
meta_assert_failure(subtester:eq(...))
meta_assert_success(subtester:ne(...))
end
end
function tests.assertTable()
testTableEqNe(true, {1, 2, 3}, {1, 2, 3}, MESSAGE)
testTableEqNe(false, {1, 2, 3}, {3, 2, 1}, MESSAGE)
testTableEqNe(true, {1, 2, {4, 5}}, {1, 2, {4, 5}}, MESSAGE)
testTableEqNe(false, {1, 2, 3}, {1,2}, MESSAGE)
testTableEqNe(false, {1, 2, 3}, {1, 2, 3, 4}, MESSAGE)
testTableEqNe(true, {{1}}, {{1}}, MESSAGE)
testTableEqNe(false, {{1}}, {{{1}}}, MESSAGE)
testTableEqNe(true, {false}, {false}, MESSAGE)
testTableEqNe(false, {true}, {false}, MESSAGE)
testTableEqNe(false, {false}, {true}, MESSAGE)
local tensor = torch.rand(100, 100)
local t1 = {1, "a", key = "value", tensor = tensor, subtable = {"nested"}}
local t2 = {1, "a", key = "value", tensor = tensor, subtable = {"nested"}}
testTableEqNe(true, t1, t2, MESSAGE)
for k, v in pairs(t1) do
local x = "something else"
t2[k] = nil
t2[x] = v
testTableEqNe(false, t1, t2, MESSAGE)
t2[x] = nil
t2[k] = x
testTableEqNe(false, t1, t2, MESSAGE)
t2[k] = v
testTableEqNe(true, t1, t2, MESSAGE)
end
end
local function good_fn() end
local function bad_fn() error("muahaha!") end
function tests.assertError()
meta_assert_success(subtester:assertError(bad_fn, MESSAGE))
meta_assert_failure(subtester:assertError(good_fn, MESSAGE))
end
function tests.assertNoError()
meta_assert_success(subtester:assertNoError(good_fn, MESSAGE))
meta_assert_failure(subtester:assertNoError(bad_fn, MESSAGE))
end
function tests.assertErrorPattern()
meta_assert_success(subtester:assertErrorPattern(bad_fn, "haha", MESSAGE))
meta_assert_failure(subtester:assertErrorPattern(bad_fn, "hehe", MESSAGE))
end
function tests.testSuite_duplicateTests()
local function createDuplicateTests()
local tests = torch.TestSuite()
function tests.testThis() end
function tests.testThis() end
end
tester:assertErrorPattern(createDuplicateTests,
"Test testThis is already defined.")
end
--[[ Returns a Tester with `numSuccess` success cases, `numFailure` failure
cases, and with an error if `hasError` is true.
Success and fail tests are evaluated with tester:eq
]]
local function genDummyTest(numSuccess, numFailure, hasError)
hasError = hasError or false
local dummyTester = torch.Tester()
local dummyTests = torch.TestSuite()
if numSuccess > 0 then
function dummyTests.testDummySuccess()
for i = 1, numSuccess do
dummyTester:eq({1}, {1}, '', 0)
end
end
end
if numFailure > 0 then
function dummyTests.testDummyFailure()
for i = 1, numFailure do
dummyTester:eq({1}, {2}, '', 0)
end
end
end
if hasError then
function dummyTests.testDummyError()
error('dummy error')
end
end
return dummyTester:add(dummyTests)
end
function tests.runStatusAndAssertCounts()
local emptyTest = genDummyTest(0, 0, false)
local sucTest = genDummyTest(1, 0, false)
local multSucTest = genDummyTest(4, 0, false)
local failTest = genDummyTest(0, 1, false)
local errTest = genDummyTest(0, 0, true)
local errFailTest = genDummyTest(0, 1, true)
local errSucTest = genDummyTest(1, 0, true)
local failSucTest = genDummyTest(1, 1, false)
local failSucErrTest = genDummyTest(1, 1, true)
disableIoWrite()
local success, msg = pcall(emptyTest.run, emptyTest)
tester:asserteq(success, true, "pcall should succeed for empty tests")
local success, msg = pcall(sucTest.run, sucTest)
tester:asserteq(success, true, "pcall should succeed for 1 successful test")
local success, msg = pcall(multSucTest.run, multSucTest)
tester:asserteq(success, true,
"pcall should succeed for 2+ successful tests")
local success, msg = pcall(failTest.run, failTest)
tester:asserteq(success, false, "pcall should fail for tests with failure")
local success, msg = pcall(errTest.run, errTest)
tester:asserteq(success, false, "pcall should fail for tests with error")
local success, msg = pcall(errFailTest.run, errFailTest)
tester:asserteq(success, false, "pcall should fail for error+fail tests")
local success, msg = pcall(errSucTest.run, errSucTest)
tester:asserteq(success, false, "pcall should fail for error+success tests")
local success, msg = pcall(failSucTest.run, failSucTest)
tester:asserteq(success, false, "pcall should fail for fail+success tests")
local success, msg = pcall(failSucErrTest.run, failSucErrTest)
tester:asserteq(success, false,
"pcall should fail for fail+success+err test")
enableIoWrite()
tester:asserteq(emptyTest.countasserts, 0,
"emptyTest should have 0 asserts")
tester:asserteq(sucTest.countasserts, 1, "sucTest should have 1 assert")
tester:asserteq(multSucTest.countasserts, 4,
"multSucTest should have 4 asserts")
tester:asserteq(failTest.countasserts, 1, "failTest should have 1 assert")
tester:asserteq(errTest.countasserts, 0, "errTest should have 0 asserts")
tester:asserteq(errFailTest.countasserts, 1,
"errFailTest should have 1 assert")
tester:asserteq(errSucTest.countasserts, 1,
"errSucTest should have 0 asserts")
tester:asserteq(failSucTest.countasserts, 2,
"failSucTest should have 2 asserts")
end
function tests.checkNestedTestsForbidden()
disableIoWrite()
local myTester = torch.Tester()
local myTests = {{function() end}}
tester:assertErrorPattern(function() myTester:add(myTests) end,
"Nested sets",
"tester should forbid adding nested test sets")
enableIoWrite()
end
function tests.checkWarningOnAssertObject()
-- This test checks that calling assert with an object generates a warning
local myTester = torch.Tester()
local myTests = {}
function myTests.assertAbuse()
myTester:assert({})
end
myTester:add(myTests)
local warningGiven = false
io.write = function(s)
if string.match(s, 'should only be used for boolean') then
warningGiven = true
end
end
myTester:run()
enableIoWrite()
tester:assert(warningGiven, "Should warn on calling :assert(object)")
end
function tests.checkWarningOnAssertNeObject()
-- This test checks that calling assertne with two objects generates warning
local myTester = torch.Tester()
local myTests = {}
function myTests.assertAbuse()
myTester:assertne({}, {})
end
myTester:add(myTests)
local warningGiven = false
io.write = function(s)
if string.match(s, 'assertne should only be used to compare basic') then
warningGiven = true
end
end
myTester:run()
enableIoWrite()
tester:assert(warningGiven, "Should warn on calling :assertne(obj, obj)")
end
function tests.checkWarningOnExtraAssertArguments()
-- This test checks that calling assert with extra args gives a lua error
local myTester = torch.Tester()
local myTests = {}
function myTests.assertAbuse()
myTester:assert(true, "some message", "extra argument")
end
myTester:add(myTests)
local errorGiven = false
io.write = function(s)
if string.match(s, 'Unexpected arguments') then
errorGiven = true
end
end
tester:assertError(function() myTester:run() end)
enableIoWrite()
tester:assert(errorGiven, ":assert should fail on extra arguments")
end
function tests.checkWarningOnUsingTable()
-- Checks that if we don't use a TestSuite then gives a warning
local myTester = torch.Tester()
local myTests = {}
myTester:add(myTests)
local errorGiven = false
io.write = function(s)
if string.match(s, 'use TestSuite rather than plain lua table') then
errorGiven = true
end
end
myTester:run()
enableIoWrite()
tester:assert(errorGiven, "Using a plain lua table for testsuite should warn")
end
function tests.checkMaxAllowedSetUpAndTearDown()
-- Checks can have at most 1 set-up and at most 1 tear-down function
local function f() end
local myTester = torch.Tester()
for _, name in ipairs({'_setUp', '_tearDown'}) do
tester:assertNoError(function() myTester:add(f, name) end,
"Adding 1 set-up / tear-down should be fine")
tester:assertErrorPattern(function() myTester:add(f, name) end,
"Only one",
"Adding second set-up / tear-down should fail")
end
end
function tests.test_setUp()
tester:asserteq(test_name_passed_to_setUp, 'test_setUp')
for key, value in pairs(tester.tests) do
tester:assertne(key, '_setUp')
end
end
function tests.test_tearDown()
for key, value in pairs(tester.tests) do
tester:assertne(key, '_tearDown')
end
end
function tests._setUp(name)
test_name_passed_to_setUp = name
calls_to_setUp = calls_to_setUp + 1
end
function tests._tearDown(name)
calls_to_tearDown = calls_to_tearDown + 1
end
tester:add(tests):run()
-- Additional tests to check that _setUp and _tearDown were called.
local test_count = 0
for _ in pairs(tester.tests) do
test_count = test_count + 1
end
local postTests = torch.TestSuite()
local postTester = torch.Tester()
function postTests.test_setUp(tester)
postTester:asserteq(calls_to_setUp, test_count,
"Expected " .. test_count .. " calls to _setUp")
end
function postTests.test_tearDown()
postTester:asserteq(calls_to_tearDown, test_count,
"Expected " .. test_count .. " calls to _tearDown")
end
postTester:add(postTests):run()