feat(nix/readTree): add tests of the traversal logic in README

This should closely match the documented behaviour. It might still be
missing some edge cases of course.

Change-Id: I5c75fa045d5f3be8cf5eab787a02644500c14522
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2466
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
This commit is contained in:
Profpatsch 2021-01-30 07:40:33 +01:00
parent 768f5ec301
commit 5da7ee9e8a
15 changed files with 95 additions and 1 deletions

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@ -10,7 +10,7 @@ let
tree-ex = depot.nix.readTree {} ./test-example;
example = it "corresponds to the example" [
example = it "corresponds to the README example" [
(assertEq "third_party attrset"
(lib.isAttrs tree-ex.third_party
&& (! lib.isDerivation tree-ex.third_party))
@ -32,6 +32,54 @@ let
"roquefort")
];
tree-tl = depot.nix.readTree {} ./test-tree-traversal;
traversal-logic = it "corresponds to the traversal logic in the README" [
(assertEq "skip subtree default.nix is read"
tree-tl.skip-subtree.but
"the default.nix is still read")
(assertEq "skip subtree a/default.nix is skipped"
(tree-tl.skip-subtree ? a)
false)
(assertEq "skip subtree b/c.nix is skipped"
(tree-tl.skip-subtree ? b)
false)
(assertEq "skip subtree a/default.nix would be read without .skip-subtree"
(tree-tl.no-skip-subtree.a)
"am I subtree yet?")
(assertEq "skip subtree b/c.nix would be read without .skip-subtree"
(tree-tl.no-skip-subtree.b.c)
"cool")
(assertEq "default.nix attrset is merged with siblings"
tree-tl.default-nix.no
"siblings should be read")
(assertEq "default.nix means sibling isnt read"
(tree-tl.default-nix ? sibling)
false)
(assertEq "default.nix means subdirs are still read and merged into default.nix"
(tree-tl.default-nix.subdir.a)
"but Im picked up")
(assertEq "default.nix can be not an attrset"
tree-tl.default-nix.no-merge
"Im not merged with any children")
(assertEq "default.nix is not an attrset -> children are not merged"
(tree-tl.default-nix.no-merge ? subdir)
false)
(assertEq "default.nix can contain a derivation"
(lib.isDerivation tree-tl.default-nix.can-be-drv)
true)
(assertEq "Even if default.nix is a derivation, children are traversed and merged"
tree-tl.default-nix.can-be-drv.subdir.a
"Picked up through the drv")
(assertEq "default.nix drv is not changed by readTree"
tree-tl.default-nix.can-be-drv
(import ./test-tree-traversal/default-nix/can-be-drv/default.nix {}))
];
in runTestsuite "readTree" [
example
traversal-logic
]

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@ -0,0 +1,7 @@
{ ... }:
derivation {
name = "im-a-drv";
system = builtins.currentSystem;
builder = "/bin/sh";
args = [ "-c" ''echo "" > $out'' ];
}

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@ -0,0 +1,3 @@
{ ... }:
"Picked up through the drv"

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@ -0,0 +1,5 @@
{ ... }:
{
no = "siblings should be read";
}

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@ -0,0 +1,3 @@
{ ... }:
"Im not merged with any children"

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@ -0,0 +1 @@
"not accessible since parent default.nix is not an attrset"

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@ -0,0 +1 @@
"Im left alone"

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@ -0,0 +1,3 @@
{ ... }:
"but Im picked up"

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@ -0,0 +1,3 @@
{ ... }:
"am I subtree yet?"

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@ -0,0 +1,3 @@
{ ... }:
"cool"

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@ -0,0 +1,5 @@
{ ... }:
{
but = "the default.nix is still read";
}

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@ -0,0 +1 @@
this file makes subdirs be skipped, I hope

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@ -0,0 +1,3 @@
{ ... }:
"am I subtree yet?"

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@ -0,0 +1,3 @@
{ ... }:
"cool"

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@ -0,0 +1,5 @@
{ ... }:
{
but = "the default.nix is still read";
}