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misc.nix
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/*
Nix evaluation tests for various lib functions.
Since these tests are implemented with Nix evaluation, error checking is limited to what `builtins.tryEval` can detect, which is `throw`'s and `abort`'s, without error messages.
If you need to test error messages or more complex evaluations, see ./modules.sh, ./sources.sh or ./filesystem.sh as examples.
To run these tests:
[nixpkgs]$ nix-instantiate --eval --strict lib/tests/misc.nix
If the resulting list is empty, all tests passed.
Alternatively, to run all `lib` tests:
[nixpkgs]$ nix-build lib/tests/release.nix
*/
with import ../default.nix;
let
testingThrow = expr: {
expr = (builtins.tryEval (builtins.seq expr "didn't throw"));
expected = { success = false; value = false; };
};
testingEval = expr: {
expr = (builtins.tryEval expr).success;
expected = true;
};
testingDeepThrow = expr: testingThrow (builtins.deepSeq expr expr);
testSanitizeDerivationName = { name, expected }:
let
drv = derivation {
name = strings.sanitizeDerivationName name;
builder = "x";
system = "x";
};
in {
# Evaluate the derivation so an invalid name would be caught
expr = builtins.seq drv.drvPath drv.name;
inherit expected;
};
in
runTests {
# CUSTOMIZATION
testFunctionArgsMakeOverridable = {
expr = functionArgs (makeOverridable ({ a, b, c ? null}: {}));
expected = { a = false; b = false; c = true; };
};
testFunctionArgsMakeOverridableOverride = {
expr = functionArgs (makeOverridable ({ a, b, c ? null }: {}) { a = 1; b = 2; }).override;
expected = { a = false; b = false; c = true; };
};
testCallPackageWithOverridePreservesArguments =
let
f = { a ? 0, b }: {};
f' = callPackageWith { a = 1; b = 2; } f {};
in {
expr = functionArgs f'.override;
expected = functionArgs f;
};
testCallPackagesWithOverridePreservesArguments =
let
f = { a ? 0, b }: { nested = {}; };
f' = callPackagesWith { a = 1; b = 2; } f {};
in {
expr = functionArgs f'.nested.override;
expected = functionArgs f;
};
# TRIVIAL
testId = {
expr = id 1;
expected = 1;
};
testConst = {
expr = const 2 3;
expected = 2;
};
testPipe = {
expr = pipe 2 [
(x: x + 2) # 2 + 2 = 4
(x: x * 2) # 4 * 2 = 8
];
expected = 8;
};
testPipeEmpty = {
expr = pipe 2 [];
expected = 2;
};
testPipeStrings = {
expr = pipe [ 3 4 ] [
(map toString)
(map (s: s + "\n"))
concatStrings
];
expected = ''
3
4
'';
};
/*
testOr = {
expr = or true false;
expected = true;
};
*/
testAnd = {
expr = and true false;
expected = false;
};
testFix = {
expr = fix (x: {a = if x ? a then "a" else "b";});
expected = {a = "a";};
};
testComposeExtensions = {
expr = let obj = makeExtensible (self: { foo = self.bar; });
f = self: super: { bar = false; baz = true; };
g = self: super: { bar = super.baz or false; };
f_o_g = composeExtensions f g;
composed = obj.extend f_o_g;
in composed.foo;
expected = true;
};
testComposeManyExtensions0 = {
expr = let obj = makeExtensible (self: { foo = true; });
emptyComposition = composeManyExtensions [];
composed = obj.extend emptyComposition;
in composed.foo;
expected = true;
};
testComposeManyExtensions =
let f = self: super: { bar = false; baz = true; };
g = self: super: { bar = super.baz or false; };
h = self: super: { qux = super.bar or false; };
obj = makeExtensible (self: { foo = self.qux; });
in {
expr = let composition = composeManyExtensions [f g h];
composed = obj.extend composition;
in composed.foo;
expected = (obj.extend (composeExtensions f (composeExtensions g h))).foo;
};
testBitAnd = {
expr = (bitAnd 3 10);
expected = 2;
};
testBitOr = {
expr = (bitOr 3 10);
expected = 11;
};
testBitXor = {
expr = (bitXor 3 10);
expected = 9;
};
testToHexString = {
expr = toHexString 250;
expected = "FA";
};
testToBaseDigits = {
expr = toBaseDigits 2 6;
expected = [ 1 1 0 ];
};
testFunctionArgsFunctor = {
expr = functionArgs { __functor = self: { a, b }: null; };
expected = { a = false; b = false; };
};
testFunctionArgsSetFunctionArgs = {
expr = functionArgs (setFunctionArgs (args: args.x) { x = false; });
expected = { x = false; };
};
# STRINGS
testConcatMapStrings = {
expr = concatMapStrings (x: x + ";") ["a" "b" "c"];
expected = "a;b;c;";
};
testConcatStringsSep = {
expr = concatStringsSep "," ["a" "b" "c"];
expected = "a,b,c";
};
testConcatLines = {
expr = concatLines ["a" "b" "c"];
expected = "a\nb\nc\n";
};
testReplicateString = {
expr = strings.replicate 5 "hello";
expected = "hellohellohellohellohello";
};
testSplitStringsSimple = {
expr = strings.splitString "." "a.b.c.d";
expected = [ "a" "b" "c" "d" ];
};
testSplitStringsEmpty = {
expr = strings.splitString "." "a..b";
expected = [ "a" "" "b" ];
};
testSplitStringsOne = {
expr = strings.splitString ":" "a.b";
expected = [ "a.b" ];
};
testSplitStringsNone = {
expr = strings.splitString "." "";
expected = [ "" ];
};
testSplitStringsFirstEmpty = {
expr = strings.splitString "/" "/a/b/c";
expected = [ "" "a" "b" "c" ];
};
testSplitStringsLastEmpty = {
expr = strings.splitString ":" "2001:db8:0:0042::8a2e:370:";
expected = [ "2001" "db8" "0" "0042" "" "8a2e" "370" "" ];
};
testSplitStringsRegex = {
expr = strings.splitString "\\[{}]()^$?*+|." "A\\[{}]()^$?*+|.B";
expected = [ "A" "B" ];
};
testSplitStringsDerivation = {
expr = take 3 (strings.splitString "/" (derivation {
name = "name";
builder = "builder";
system = "system";
}));
expected = ["" "nix" "store"];
};
testSplitVersionSingle = {
expr = versions.splitVersion "1";
expected = [ "1" ];
};
testSplitVersionDouble = {
expr = versions.splitVersion "1.2";
expected = [ "1" "2" ];
};
testSplitVersionTriple = {
expr = versions.splitVersion "1.2.3";
expected = [ "1" "2" "3" ];
};
testPadVersionLess = {
expr = versions.pad 3 "1.2";
expected = "1.2.0";
};
testPadVersionLessExtra = {
expr = versions.pad 3 "1.3-rc1";
expected = "1.3.0-rc1";
};
testPadVersionMore = {
expr = versions.pad 3 "1.2.3.4";
expected = "1.2.3";
};
testIsStorePath = {
expr =
let goodPath =
"${builtins.storeDir}/d945ibfx9x185xf04b890y4f9g3cbb63-python-2.7.11";
in {
storePath = isStorePath goodPath;
storePathDerivation = isStorePath (import ../.. { system = "x86_64-linux"; }).hello;
storePathAppendix = isStorePath
"${goodPath}/bin/python";
nonAbsolute = isStorePath (concatStrings (tail (stringToCharacters goodPath)));
asPath = isStorePath (/. + goodPath);
otherPath = isStorePath "/something/else";
otherVals = {
attrset = isStorePath {};
list = isStorePath [];
int = isStorePath 42;
};
};
expected = {
storePath = true;
storePathDerivation = true;
storePathAppendix = false;
nonAbsolute = false;
asPath = true;
otherPath = false;
otherVals = {
attrset = false;
list = false;
int = false;
};
};
};
testEscapeXML = {
expr = escapeXML ''"test" 'test' < & >'';
expected = ""test" 'test' < & >";
};
testToShellVars = {
expr = ''
${toShellVars {
STRing01 = "just a 'string'";
_array_ = [ "with" "more strings" ];
assoc."with some" = ''
strings
possibly newlines
'';
drv = {
outPath = "/drv";
foo = "ignored attribute";
};
path = /path;
stringable = {
__toString = _: "hello toString";
bar = "ignored attribute";
};
}}
'';
expected = ''
STRing01='just a '\'''string'\''''
declare -a _array_=('with' 'more strings')
declare -A assoc=(['with some']='strings
possibly newlines
')
drv='/drv'
path='/path'
stringable='hello toString'
'';
};
testHasInfixFalse = {
expr = hasInfix "c" "abde";
expected = false;
};
testHasInfixTrue = {
expr = hasInfix "c" "abcde";
expected = true;
};
testHasInfixDerivation = {
expr = hasInfix "hello" (import ../.. { system = "x86_64-linux"; }).hello;
expected = true;
};
testHasInfixPath = {
expr = hasInfix "tests" ./.;
expected = true;
};
testHasInfixPathStoreDir = {
expr = hasInfix builtins.storeDir ./.;
expected = true;
};
testHasInfixToString = {
expr = hasInfix "a" { __toString = _: "a"; };
expected = true;
};
testRemovePrefixExample1 = {
expr = removePrefix "foo." "foo.bar.baz";
expected = "bar.baz";
};
testRemovePrefixExample2 = {
expr = removePrefix "xxx" "foo.bar.baz";
expected = "foo.bar.baz";
};
testRemovePrefixEmptyPrefix = {
expr = removePrefix "" "foo";
expected = "foo";
};
testRemovePrefixEmptyString = {
expr = removePrefix "foo" "";
expected = "";
};
testRemovePrefixEmptyBoth = {
expr = removePrefix "" "";
expected = "";
};
testNormalizePath = {
expr = strings.normalizePath "//a/b//c////d/";
expected = "/a/b/c/d/";
};
testCharToInt = {
expr = strings.charToInt "A";
expected = 65;
};
testEscapeC = {
expr = strings.escapeC [ " " ] "Hello World";
expected = "Hello\\x20World";
};
testEscapeURL = testAllTrue [
("" == strings.escapeURL "")
("Hello" == strings.escapeURL "Hello")
("Hello%20World" == strings.escapeURL "Hello World")
("Hello%2FWorld" == strings.escapeURL "Hello/World")
("42%25" == strings.escapeURL "42%")
("%20%3F%26%3D%23%2B%25%21%3C%3E%23%22%7B%7D%7C%5C%5E%5B%5D%60%09%3A%2F%40%24%27%28%29%2A%2C%3B" == strings.escapeURL " ?&=#+%!<>#\"{}|\\^[]`\t:/@$'()*,;")
];
testToInt = testAllTrue [
# Naive
(123 == toInt "123")
(0 == toInt "0")
# Whitespace Padding
(123 == toInt " 123")
(123 == toInt "123 ")
(123 == toInt " 123 ")
(123 == toInt " 123 ")
(0 == toInt " 0")
(0 == toInt "0 ")
(0 == toInt " 0 ")
(-1 == toInt "-1")
(-1 == toInt " -1 ")
];
testToIntFails = testAllTrue [
( builtins.tryEval (toInt "") == { success = false; value = false; } )
( builtins.tryEval (toInt "123 123") == { success = false; value = false; } )
( builtins.tryEval (toInt "0 123") == { success = false; value = false; } )
( builtins.tryEval (toInt " 0d ") == { success = false; value = false; } )
( builtins.tryEval (toInt " 1d ") == { success = false; value = false; } )
( builtins.tryEval (toInt " d0 ") == { success = false; value = false; } )
( builtins.tryEval (toInt "00") == { success = false; value = false; } )
( builtins.tryEval (toInt "01") == { success = false; value = false; } )
( builtins.tryEval (toInt "002") == { success = false; value = false; } )
( builtins.tryEval (toInt " 002 ") == { success = false; value = false; } )
( builtins.tryEval (toInt " foo ") == { success = false; value = false; } )
( builtins.tryEval (toInt " foo 123 ") == { success = false; value = false; } )
( builtins.tryEval (toInt " foo123 ") == { success = false; value = false; } )
];
testToIntBase10 = testAllTrue [
# Naive
(123 == toIntBase10 "123")
(0 == toIntBase10 "0")
# Whitespace Padding
(123 == toIntBase10 " 123")
(123 == toIntBase10 "123 ")
(123 == toIntBase10 " 123 ")
(123 == toIntBase10 " 123 ")
(0 == toIntBase10 " 0")
(0 == toIntBase10 "0 ")
(0 == toIntBase10 " 0 ")
# Zero Padding
(123 == toIntBase10 "0123")
(123 == toIntBase10 "0000123")
(0 == toIntBase10 "000000")
# Whitespace and Zero Padding
(123 == toIntBase10 " 0123")
(123 == toIntBase10 "0123 ")
(123 == toIntBase10 " 0123 ")
(123 == toIntBase10 " 0000123")
(123 == toIntBase10 "0000123 ")
(123 == toIntBase10 " 0000123 ")
(0 == toIntBase10 " 000000")
(0 == toIntBase10 "000000 ")
(0 == toIntBase10 " 000000 ")
(-1 == toIntBase10 "-1")
(-1 == toIntBase10 " -1 ")
];
testToIntBase10Fails = testAllTrue [
( builtins.tryEval (toIntBase10 "") == { success = false; value = false; } )
( builtins.tryEval (toIntBase10 "123 123") == { success = false; value = false; } )
( builtins.tryEval (toIntBase10 "0 123") == { success = false; value = false; } )
( builtins.tryEval (toIntBase10 " 0d ") == { success = false; value = false; } )
( builtins.tryEval (toIntBase10 " 1d ") == { success = false; value = false; } )
( builtins.tryEval (toIntBase10 " d0 ") == { success = false; value = false; } )
( builtins.tryEval (toIntBase10 " foo ") == { success = false; value = false; } )
( builtins.tryEval (toIntBase10 " foo 123 ") == { success = false; value = false; } )
( builtins.tryEval (toIntBase10 " foo 00123 ") == { success = false; value = false; } )
( builtins.tryEval (toIntBase10 " foo00123 ") == { success = false; value = false; } )
];
# LISTS
testFilter = {
expr = filter (x: x != "a") ["a" "b" "c" "a"];
expected = ["b" "c"];
};
testFold =
let
f = op: fold: fold op 0 (range 0 100);
# fold with associative operator
assoc = f builtins.add;
# fold with non-associative operator
nonAssoc = f builtins.sub;
in {
expr = {
assocRight = assoc foldr;
# right fold with assoc operator is same as left fold
assocRightIsLeft = assoc foldr == assoc foldl;
nonAssocRight = nonAssoc foldr;
nonAssocLeft = nonAssoc foldl;
# with non-assoc operator the fold results are not the same
nonAssocRightIsNotLeft = nonAssoc foldl != nonAssoc foldr;
# fold is an alias for foldr
foldIsRight = nonAssoc fold == nonAssoc foldr;
};
expected = {
assocRight = 5050;
assocRightIsLeft = true;
nonAssocRight = 50;
nonAssocLeft = (-5050);
nonAssocRightIsNotLeft = true;
foldIsRight = true;
};
};
testFoldl'Empty = {
expr = foldl' (acc: el: abort "operation not called") 0 [ ];
expected = 0;
};
testFoldl'IntegerAdding = {
expr = foldl' (acc: el: acc + el) 0 [ 1 2 3 ];
expected = 6;
};
# The accumulator isn't forced deeply
testFoldl'NonDeep = {
expr = take 3 (foldl'
(acc: el: [ el ] ++ acc)
[ (abort "unevaluated list entry") ]
[ 1 2 3 ]);
expected = [ 3 2 1 ];
};
# Compared to builtins.foldl', lib.foldl' evaluates the first accumulator strictly too
testFoldl'StrictInitial = {
expr = (builtins.tryEval (foldl' (acc: el: el) (throw "hello") [])).success;
expected = false;
};
# Make sure we don't get a stack overflow for large lists
# This number of elements would notably cause a stack overflow if it was implemented without the `foldl'` builtin
testFoldl'Large = {
expr = foldl' (acc: el: acc + el) 0 (range 0 100000);
expected = 5000050000;
};
testTake = testAllTrue [
([] == (take 0 [ 1 2 3 ]))
([1] == (take 1 [ 1 2 3 ]))
([ 1 2 ] == (take 2 [ 1 2 3 ]))
([ 1 2 3 ] == (take 3 [ 1 2 3 ]))
([ 1 2 3 ] == (take 4 [ 1 2 3 ]))
];
testListHasPrefixExample1 = {
expr = lists.hasPrefix [ 1 2 ] [ 1 2 3 4 ];
expected = true;
};
testListHasPrefixExample2 = {
expr = lists.hasPrefix [ 0 1 ] [ 1 2 3 4 ];
expected = false;
};
testListHasPrefixLazy = {
expr = lists.hasPrefix [ 1 ] [ 1 (abort "lib.lists.hasPrefix is not lazy") ];
expected = true;
};
testListHasPrefixEmptyPrefix = {
expr = lists.hasPrefix [ ] [ 1 2 ];
expected = true;
};
testListHasPrefixEmptyList = {
expr = lists.hasPrefix [ 1 2 ] [ ];
expected = false;
};
testListRemovePrefixExample1 = {
expr = lists.removePrefix [ 1 2 ] [ 1 2 3 4 ];
expected = [ 3 4 ];
};
testListRemovePrefixExample2 = {
expr = (builtins.tryEval (lists.removePrefix [ 0 1 ] [ 1 2 3 4 ])).success;
expected = false;
};
testListRemovePrefixEmptyPrefix = {
expr = lists.removePrefix [ ] [ 1 2 ];
expected = [ 1 2 ];
};
testListRemovePrefixEmptyList = {
expr = (builtins.tryEval (lists.removePrefix [ 1 2 ] [ ])).success;
expected = false;
};
testFoldAttrs = {
expr = foldAttrs (n: a: [n] ++ a) [] [
{ a = 2; b = 7; }
{ a = 3; c = 8; }
];
expected = { a = [ 2 3 ]; b = [7]; c = [8];};
};
testListCommonPrefixExample1 = {
expr = lists.commonPrefix [ 1 2 3 4 5 6 ] [ 1 2 4 8 ];
expected = [ 1 2 ];
};
testListCommonPrefixExample2 = {
expr = lists.commonPrefix [ 1 2 3 ] [ 1 2 3 4 5 ];
expected = [ 1 2 3 ];
};
testListCommonPrefixExample3 = {
expr = lists.commonPrefix [ 1 2 3 ] [ 4 5 6 ];
expected = [ ];
};
testListCommonPrefixEmpty = {
expr = lists.commonPrefix [ ] [ 1 2 3 ];
expected = [ ];
};
testListCommonPrefixSame = {
expr = lists.commonPrefix [ 1 2 3 ] [ 1 2 3 ];
expected = [ 1 2 3 ];
};
testListCommonPrefixLazy = {
expr = lists.commonPrefix [ 1 ] [ 1 (abort "lib.lists.commonPrefix shouldn't evaluate this")];
expected = [ 1 ];
};
# This would stack overflow if `commonPrefix` were implemented using recursion
testListCommonPrefixLong =
let
longList = genList (n: n) 100000;
in {
expr = lists.commonPrefix longList longList;
expected = longList;
};
testSort = {
expr = sort builtins.lessThan [ 40 2 30 42 ];
expected = [2 30 40 42];
};
testSortOn = {
expr = sortOn stringLength [ "aa" "b" "cccc" ];
expected = [ "b" "aa" "cccc" ];
};
testSortOnEmpty = {
expr = sortOn (throw "nope") [ ];
expected = [ ];
};
testSortOnIncomparable = {
expr =
map
(x: x.f x.ok)
(sortOn (x: x.ok) [
{ ok = 1; f = x: x; }
{ ok = 3; f = x: x + 3; }
{ ok = 2; f = x: x; }
]);
expected = [ 1 2 6 ];
};
testReplicate = {
expr = replicate 3 "a";
expected = ["a" "a" "a"];
};
testToIntShouldConvertStringToInt = {
expr = toInt "27";
expected = 27;
};
testToIntShouldThrowErrorIfItCouldNotConvertToInt = {
expr = builtins.tryEval (toInt "\"foo\"");
expected = { success = false; value = false; };
};
testHasAttrByPathTrue = {
expr = hasAttrByPath ["a" "b"] { a = { b = "yey"; }; };
expected = true;
};
testHasAttrByPathFalse = {
expr = hasAttrByPath ["a" "b"] { a = { c = "yey"; }; };
expected = false;
};
testHasAttrByPathNonStrict = {
expr = hasAttrByPath [] (throw "do not use");
expected = true;
};
testLongestValidPathPrefix_empty_empty = {
expr = attrsets.longestValidPathPrefix [ ] { };
expected = [ ];
};
testLongestValidPathPrefix_empty_nonStrict = {
expr = attrsets.longestValidPathPrefix [ ] (throw "do not use");
expected = [ ];
};
testLongestValidPathPrefix_zero = {
expr = attrsets.longestValidPathPrefix [ "a" (throw "do not use") ] { d = null; };
expected = [ ];
};
testLongestValidPathPrefix_zero_b = {
expr = attrsets.longestValidPathPrefix [ "z" "z" ] "remarkably harmonious";
expected = [ ];
};
testLongestValidPathPrefix_one = {
expr = attrsets.longestValidPathPrefix [ "a" "b" "c" ] { a = null; };
expected = [ "a" ];
};
testLongestValidPathPrefix_two = {
expr = attrsets.longestValidPathPrefix [ "a" "b" "c" ] { a.b = null; };
expected = [ "a" "b" ];
};
testLongestValidPathPrefix_three = {
expr = attrsets.longestValidPathPrefix [ "a" "b" "c" ] { a.b.c = null; };
expected = [ "a" "b" "c" ];
};
testLongestValidPathPrefix_three_extra = {
expr = attrsets.longestValidPathPrefix [ "a" "b" "c" ] { a.b.c.d = throw "nope"; };
expected = [ "a" "b" "c" ];
};
testFindFirstIndexExample1 = {
expr = lists.findFirstIndex (x: x > 3) (abort "index found, so a default must not be evaluated") [ 1 6 4 ];
expected = 1;
};
testFindFirstIndexExample2 = {
expr = lists.findFirstIndex (x: x > 9) "a very specific default" [ 1 6 4 ];
expected = "a very specific default";
};
testFindFirstIndexEmpty = {
expr = lists.findFirstIndex (abort "when the list is empty, the predicate is not needed") null [];
expected = null;
};
testFindFirstIndexSingleMatch = {
expr = lists.findFirstIndex (x: x == 5) null [ 5 ];
expected = 0;
};
testFindFirstIndexSingleDefault = {
expr = lists.findFirstIndex (x: false) null [ (abort "if the predicate doesn't access the value, it must not be evaluated") ];
expected = null;
};
testFindFirstIndexNone = {
expr = builtins.tryEval (lists.findFirstIndex (x: x == 2) null [ 1 (throw "the last element must be evaluated when there's no match") ]);
expected = { success = false; value = false; };
};
# Makes sure that the implementation doesn't cause a stack overflow
testFindFirstIndexBig = {
expr = lists.findFirstIndex (x: x == 1000000) null (range 0 1000000);
expected = 1000000;
};
testFindFirstIndexLazy = {
expr = lists.findFirstIndex (x: x == 1) null [ 1 (abort "list elements after the match must not be evaluated") ];
expected = 0;
};
testFindFirstExample1 = {
expr = lists.findFirst (x: x > 3) 7 [ 1 6 4 ];
expected = 6;
};
testFindFirstExample2 = {
expr = lists.findFirst (x: x > 9) 7 [ 1 6 4 ];
expected = 7;
};
testAllUnique_true = {
expr = allUnique [ 3 2 4 1 ];
expected = true;
};
testAllUnique_false = {
expr = allUnique [ 3 2 3 4 ];
expected = false;
};
# ATTRSETS
testConcatMapAttrs = {
expr = concatMapAttrs
(name: value: {
${name} = value;
${name + value} = value;
})
{
foo = "bar";
foobar = "baz";
};
expected = {
foo = "bar";
foobar = "baz";
foobarbaz = "baz";
};
};
# code from example
testFoldlAttrs = {
expr = {
example = foldlAttrs
(acc: name: value: {
sum = acc.sum + value;
names = acc.names ++ [ name ];
})
{ sum = 0; names = [ ]; }
{
foo = 1;
bar = 10;
};
# should just return the initial value
emptySet = foldlAttrs (throw "function not needed") 123 { };
# should just evaluate to the last value
valuesNotNeeded = foldlAttrs (acc: _name: _v: acc) 3 { z = throw "value z not needed"; a = throw "value a not needed"; };
# the accumulator doesnt have to be an attrset it can be as trivial as being just a number or string
trivialAcc = foldlAttrs (acc: _name: v: acc * 10 + v) 1 { z = 1; a = 2; };
};
expected = {
example = {
sum = 11;
names = [ "bar" "foo" ];
};
emptySet = 123;
valuesNotNeeded = 3;
trivialAcc = 121;
};
};
testMergeAttrsListExample1 = {
expr = attrsets.mergeAttrsList [ { a = 0; b = 1; } { c = 2; d = 3; } ];
expected = { a = 0; b = 1; c = 2; d = 3; };
};
testMergeAttrsListExample2 = {
expr = attrsets.mergeAttrsList [ { a = 0; } { a = 1; } ];
expected = { a = 1; };
};
testMergeAttrsListExampleMany =
let
list = genList (n:
listToAttrs (genList (m:
let
# Integer divide n by two to create duplicate attributes
str = "halfn${toString (n / 2)}m${toString m}";
in
nameValuePair str str
) 100)
) 100;
in {
expr = attrsets.mergeAttrsList list;
expected = foldl' mergeAttrs { } list;
};
# code from the example
testRecursiveUpdateUntil = {
expr = recursiveUpdateUntil (path: l: r: path == ["foo"]) {
# first attribute set
foo.bar = 1;
foo.baz = 2;
bar = 3;
} {
#second attribute set
foo.bar = 1;
foo.quz = 2;
baz = 4;
};
expected = {
foo.bar = 1; # 'foo.*' from the second set
foo.quz = 2; #
bar = 3; # 'bar' from the first set
baz = 4; # 'baz' from the second set
};
};
testMatchAttrsMatchingExact = {
expr = matchAttrs { cpu = { bits = 64; }; } { cpu = { bits = 64; }; };
expected = true;
};
testMatchAttrsMismatch = {
expr = matchAttrs { cpu = { bits = 128; }; } { cpu = { bits = 64; }; };
expected = false;
};
testMatchAttrsMatchingImplicit = {
expr = matchAttrs { cpu = { }; } { cpu = { bits = 64; }; };
expected = true;
};
testMatchAttrsMissingAttrs = {
expr = matchAttrs { cpu = {}; } { };
expected = false;
};
testOverrideExistingEmpty = {
expr = overrideExisting {} { a = 1; };
expected = {};
};
testOverrideExistingDisjoint = {
expr = overrideExisting { b = 2; } { a = 1; };
expected = { b = 2; };
};
testOverrideExistingOverride = {
expr = overrideExisting { a = 3; b = 2; } { a = 1; };
expected = { a = 1; b = 2; };
};
testListAttrsReverse = let
exampleAttrs = {foo=1; bar="asdf"; baz = [1 3 3 7]; fnord=null;};
exampleSingletonList = [{name="foo"; value=1;}];
in {
expr = {
isReverseToListToAttrs = builtins.listToAttrs (attrsToList exampleAttrs) == exampleAttrs;
isReverseToAttrsToList = attrsToList (builtins.listToAttrs exampleSingletonList) == exampleSingletonList;
testDuplicatePruningBehaviour = attrsToList (builtins.listToAttrs [{name="a"; value=2;} {name="a"; value=1;}]);
};
expected = {
isReverseToAttrsToList = true;
isReverseToListToAttrs = true;
testDuplicatePruningBehaviour = [{name="a"; value=2;}];
};
};
testAttrsToListsCanDealWithFunctions = testingEval (
attrsToList { someFunc= a: a + 1;}
);
# GENERATORS
# these tests assume attributes are converted to lists
# in alphabetical order
testMkKeyValueDefault = {
expr = generators.mkKeyValueDefault {} ":" "f:oo" "bar";
expected = ''f\:oo:bar'';
};
testMkValueString = {
expr = let
vals = {
int = 42;
string = ''fo"o'';
bool = true;
bool2 = false;
null = null;
# float = 42.23; # floats are strange
};
in mapAttrs
(const (generators.mkValueStringDefault {}))
vals;
expected = {
int = "42";
string = ''fo"o'';
bool = "true";
bool2 = "false";