forked from mirrors/nixpkgs
Merge pull request #24835 from Profpatsch/lib-doc-improvements
Lib doc improvements
This commit is contained in:
Jörg Thalheim
GitHub
commit
948488343b
159
lib/tests.nix
159
lib/tests.nix
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@ -6,6 +6,9 @@ with import ./default.nix;
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runTests {
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# TRIVIAL
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testId = {
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expr = id 1;
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expected = 1;
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@ -33,6 +36,18 @@ runTests {
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expected = {a = "a";};
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};
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testComposeExtensions = {
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expr = let obj = makeExtensible (self: { foo = self.bar; });
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f = self: super: { bar = false; baz = true; };
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g = self: super: { bar = super.baz or false; };
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f_o_g = composeExtensions f g;
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composed = obj.extend f_o_g;
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in composed.foo;
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expected = true;
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};
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# STRINGS
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testConcatMapStrings = {
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expr = concatMapStrings (x: x + ";") ["a" "b" "c"];
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expected = "a;b;c;";
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@ -43,6 +58,38 @@ runTests {
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expected = "a,b,c";
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};
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testSplitStringsSimple = {
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expr = strings.splitString "." "a.b.c.d";
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expected = [ "a" "b" "c" "d" ];
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};
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testSplitStringsEmpty = {
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expr = strings.splitString "." "a..b";
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expected = [ "a" "" "b" ];
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};
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testSplitStringsOne = {
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expr = strings.splitString ":" "a.b";
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expected = [ "a.b" ];
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};
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testSplitStringsNone = {
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expr = strings.splitString "." "";
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expected = [ "" ];
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};
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testSplitStringsFirstEmpty = {
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expr = strings.splitString "/" "/a/b/c";
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expected = [ "" "a" "b" "c" ];
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};
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testSplitStringsLastEmpty = {
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expr = strings.splitString ":" "2001:db8:0:0042::8a2e:370:";
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expected = [ "2001" "db8" "0" "0042" "" "8a2e" "370" "" ];
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};
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# LISTS
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testFilter = {
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expr = filter (x: x != "a") ["a" "b" "c" "a"];
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expected = ["b" "c"];
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@ -93,45 +140,6 @@ runTests {
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expected = { a = [ 2 3 ]; b = [7]; c = [8];};
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};
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testOverridableDelayableArgsTest = {
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expr =
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let res1 = defaultOverridableDelayableArgs id {};
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res2 = defaultOverridableDelayableArgs id { a = 7; };
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res3 = let x = defaultOverridableDelayableArgs id { a = 7; };
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in (x.merge) { b = 10; };
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res4 = let x = defaultOverridableDelayableArgs id { a = 7; };
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in (x.merge) ( x: { b = 10; });
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res5 = let x = defaultOverridableDelayableArgs id { a = 7; };
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in (x.merge) ( x: { a = add x.a 3; });
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res6 = let x = defaultOverridableDelayableArgs id { a = 7; mergeAttrBy = { a = add; }; };
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y = x.merge {};
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in (y.merge) { a = 10; };
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resRem7 = res6.replace (a: removeAttrs a ["a"]);
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resReplace6 = let x = defaultOverridableDelayableArgs id { a = 7; mergeAttrBy = { a = add; }; };
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x2 = x.merge { a = 20; }; # now we have 27
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in (x2.replace) { a = 10; }; # and override the value by 10
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# fixed tests (delayed args): (when using them add some comments, please)
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resFixed1 =
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let x = defaultOverridableDelayableArgs id ( x: { a = 7; c = x.fixed.b; });
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y = x.merge (x: { name = "name-${builtins.toString x.fixed.c}"; });
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in (y.merge) { b = 10; };
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strip = attrs: removeAttrs attrs ["merge" "replace"];
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in all id
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[ ((strip res1) == { })
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((strip res2) == { a = 7; })
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((strip res3) == { a = 7; b = 10; })
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((strip res4) == { a = 7; b = 10; })
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((strip res5) == { a = 10; })
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((strip res6) == { a = 17; })
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((strip resRem7) == {})
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((strip resFixed1) == { a = 7; b = 10; c =10; name = "name-10"; })
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];
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expected = true;
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};
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testSort = {
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expr = sort builtins.lessThan [ 40 2 30 42 ];
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expected = [2 30 40 42];
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@ -158,9 +166,9 @@ runTests {
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};
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/* Generator tests */
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# these tests assume attributes are converted to lists
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# in alphabetical order
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# GENERATORS
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# these tests assume attributes are converted to lists
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# in alphabetical order
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testMkKeyValueDefault = {
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expr = generators.mkKeyValueDefault ":" "f:oo" "bar";
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@ -247,43 +255,44 @@ runTests {
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expected = builtins.toJSON val;
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};
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testSplitStringsSimple = {
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expr = strings.splitString "." "a.b.c.d";
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expected = [ "a" "b" "c" "d" ];
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};
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# MISC
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testSplitStringsEmpty = {
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expr = strings.splitString "." "a..b";
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expected = [ "a" "" "b" ];
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};
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testOverridableDelayableArgsTest = {
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expr =
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let res1 = defaultOverridableDelayableArgs id {};
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res2 = defaultOverridableDelayableArgs id { a = 7; };
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res3 = let x = defaultOverridableDelayableArgs id { a = 7; };
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in (x.merge) { b = 10; };
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res4 = let x = defaultOverridableDelayableArgs id { a = 7; };
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in (x.merge) ( x: { b = 10; });
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res5 = let x = defaultOverridableDelayableArgs id { a = 7; };
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in (x.merge) ( x: { a = add x.a 3; });
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res6 = let x = defaultOverridableDelayableArgs id { a = 7; mergeAttrBy = { a = add; }; };
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y = x.merge {};
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in (y.merge) { a = 10; };
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testSplitStringsOne = {
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expr = strings.splitString ":" "a.b";
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expected = [ "a.b" ];
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};
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resRem7 = res6.replace (a: removeAttrs a ["a"]);
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testSplitStringsNone = {
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expr = strings.splitString "." "";
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expected = [ "" ];
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};
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resReplace6 = let x = defaultOverridableDelayableArgs id { a = 7; mergeAttrBy = { a = add; }; };
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x2 = x.merge { a = 20; }; # now we have 27
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in (x2.replace) { a = 10; }; # and override the value by 10
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testSplitStringsFirstEmpty = {
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expr = strings.splitString "/" "/a/b/c";
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expected = [ "" "a" "b" "c" ];
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};
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testSplitStringsLastEmpty = {
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expr = strings.splitString ":" "2001:db8:0:0042::8a2e:370:";
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expected = [ "2001" "db8" "0" "0042" "" "8a2e" "370" "" ];
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};
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testComposeExtensions = {
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expr = let obj = makeExtensible (self: { foo = self.bar; });
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f = self: super: { bar = false; baz = true; };
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g = self: super: { bar = super.baz or false; };
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f_o_g = composeExtensions f g;
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composed = obj.extend f_o_g;
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in composed.foo;
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# fixed tests (delayed args): (when using them add some comments, please)
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resFixed1 =
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let x = defaultOverridableDelayableArgs id ( x: { a = 7; c = x.fixed.b; });
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y = x.merge (x: { name = "name-${builtins.toString x.fixed.c}"; });
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in (y.merge) { b = 10; };
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strip = attrs: removeAttrs attrs ["merge" "replace"];
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in all id
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[ ((strip res1) == { })
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((strip res2) == { a = 7; })
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((strip res3) == { a = 7; b = 10; })
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((strip res4) == { a = 7; b = 10; })
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((strip res5) == { a = 10; })
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((strip res6) == { a = 17; })
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((strip resRem7) == {})
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((strip resFixed1) == { a = 7; b = 10; c =10; name = "name-10"; })
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];
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expected = true;
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};
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@ -56,6 +56,8 @@ rec {
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# nix-repl> fix f
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# { bar = "bar"; foo = "foo"; foobar = "foobar"; }
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#
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# Type: fix :: (a -> a) -> a
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#
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# See https://en.wikipedia.org/wiki/Fixed-point_combinator for further
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# details.
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fix = f: let x = f x; in x;
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