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-rw-r--r--nix/readTree/tests/.skip-subtree1
-rw-r--r--nix/readTree/tests/default.nix127
-rw-r--r--nix/readTree/tests/test-example/third_party/default.nix5
-rw-r--r--nix/readTree/tests/test-example/third_party/rustpkgs/aho-corasick.nix1
-rw-r--r--nix/readTree/tests/test-example/third_party/rustpkgs/serde.nix1
-rw-r--r--nix/readTree/tests/test-example/tools/cheddar/default.nix1
-rw-r--r--nix/readTree/tests/test-example/tools/roquefort.nix1
-rw-r--r--nix/readTree/tests/test-marker/directory-marked/default.nix3
-rw-r--r--nix/readTree/tests/test-marker/directory-marked/nested/default.nix3
-rw-r--r--nix/readTree/tests/test-marker/file-children/one.nix3
-rw-r--r--nix/readTree/tests/test-marker/file-children/two.nix3
-rw-r--r--nix/readTree/tests/test-tree-traversal/default-nix/can-be-drv/default.nix7
-rw-r--r--nix/readTree/tests/test-tree-traversal/default-nix/can-be-drv/subdir/a.nix3
-rw-r--r--nix/readTree/tests/test-tree-traversal/default-nix/default.nix5
-rw-r--r--nix/readTree/tests/test-tree-traversal/default-nix/no-merge/default.nix3
-rw-r--r--nix/readTree/tests/test-tree-traversal/default-nix/no-merge/subdir/a.nix1
-rw-r--r--nix/readTree/tests/test-tree-traversal/default-nix/sibling.nix1
-rw-r--r--nix/readTree/tests/test-tree-traversal/default-nix/subdir/a.nix3
-rw-r--r--nix/readTree/tests/test-tree-traversal/no-skip-subtree/a/default.nix3
-rw-r--r--nix/readTree/tests/test-tree-traversal/no-skip-subtree/b/c.nix3
-rw-r--r--nix/readTree/tests/test-tree-traversal/no-skip-subtree/default.nix5
-rw-r--r--nix/readTree/tests/test-tree-traversal/skip-subtree/.skip-subtree1
-rw-r--r--nix/readTree/tests/test-tree-traversal/skip-subtree/a/default.nix3
-rw-r--r--nix/readTree/tests/test-tree-traversal/skip-subtree/b/c.nix3
-rw-r--r--nix/readTree/tests/test-tree-traversal/skip-subtree/default.nix5
-rw-r--r--nix/readTree/tests/test-wrong-no-dots/no-dots-in-function.nix3
-rw-r--r--nix/readTree/tests/test-wrong-not-a-function/not-a-function.nix1
27 files changed, 199 insertions, 0 deletions
diff --git a/nix/readTree/tests/.skip-subtree b/nix/readTree/tests/.skip-subtree
new file mode 100644
index 000000000000..46952a4ca635
--- /dev/null
+++ b/nix/readTree/tests/.skip-subtree
@@ -0,0 +1 @@
+These tests call their own readTree, so the toplevel one shouldn’t bother
diff --git a/nix/readTree/tests/default.nix b/nix/readTree/tests/default.nix
new file mode 100644
index 000000000000..3354a4fe5e75
--- /dev/null
+++ b/nix/readTree/tests/default.nix
@@ -0,0 +1,127 @@
+{ depot, lib, ... }:
+
+let
+  inherit (depot.nix.runTestsuite)
+    runTestsuite
+    it
+    assertEq
+    assertThrows
+    ;
+
+  tree-ex = depot.nix.readTree {
+    path = ./test-example;
+    args = {};
+  };
+
+  example = it "corresponds to the README example" [
+    (assertEq "third_party attrset"
+      (lib.isAttrs tree-ex.third_party
+      && (! lib.isDerivation tree-ex.third_party))
+      true)
+    (assertEq "third_party attrset other attribute"
+      tree-ex.third_party.favouriteColour
+      "orange")
+    (assertEq "rustpkgs attrset aho-corasick"
+      tree-ex.third_party.rustpkgs.aho-corasick
+      "aho-corasick")
+    (assertEq "rustpkgs attrset serde"
+      tree-ex.third_party.rustpkgs.serde
+      "serde")
+    (assertEq "tools cheddear"
+      "cheddar"
+      tree-ex.tools.cheddar)
+    (assertEq "tools roquefort"
+      tree-ex.tools.roquefort
+      "roquefort")
+  ];
+
+  tree-tl = depot.nix.readTree {
+    path = ./test-tree-traversal;
+    args = {};
+  };
+
+  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 isn’t 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 I’m picked up")
+
+    (assertEq "default.nix can be not an attrset"
+      tree-tl.default-nix.no-merge
+      "I’m 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 {}))
+  ];
+
+  # these each call readTree themselves because the throws have to happen inside assertThrows
+  wrong = it "cannot read these files and will complain" [
+    (assertThrows "this file is not a function"
+      (depot.nix.readTree {
+        path = ./test-wrong-not-a-function;
+        args = {};
+      }).not-a-function)
+    # can’t test for that, assertThrows can’t catch this error
+    # (assertThrows "this file is a function but doesn’t have dots"
+    #   (depot.nix.readTree {} ./test-wrong-no-dots).no-dots-in-function)
+  ];
+
+  read-markers = depot.nix.readTree {
+    path = ./test-marker;
+    args = {};
+  };
+
+  assertMarkerByPath = path:
+    assertEq "${lib.concatStringsSep "." path} is marked correctly"
+      (lib.getAttrFromPath path read-markers).__readTree path;
+
+  markers = it "marks nodes correctly" [
+    (assertMarkerByPath [ "directory-marked" ])
+    (assertMarkerByPath [ "directory-marked" "nested" ])
+    (assertMarkerByPath [ "file-children" "one" ])
+    (assertMarkerByPath [ "file-children" "two" ])
+    (assertEq "nix file children are marked correctly"
+      read-markers.file-children.__readTreeChildren [ "one" "two" ])
+    (assertEq "directory children are marked correctly"
+      read-markers.directory-marked.__readTreeChildren [ "nested" ])
+    (assertEq "absence of children is marked"
+      read-markers.directory-marked.nested.__readTreeChildren [ ])
+  ];
+
+in runTestsuite "readTree" [
+  example
+  traversal-logic
+  wrong
+  markers
+]
diff --git a/nix/readTree/tests/test-example/third_party/default.nix b/nix/readTree/tests/test-example/third_party/default.nix
new file mode 100644
index 000000000000..27d87242189d
--- /dev/null
+++ b/nix/readTree/tests/test-example/third_party/default.nix
@@ -0,0 +1,5 @@
+{ ... }:
+
+{
+  favouriteColour = "orange";
+}
diff --git a/nix/readTree/tests/test-example/third_party/rustpkgs/aho-corasick.nix b/nix/readTree/tests/test-example/third_party/rustpkgs/aho-corasick.nix
new file mode 100644
index 000000000000..f964fa583c43
--- /dev/null
+++ b/nix/readTree/tests/test-example/third_party/rustpkgs/aho-corasick.nix
@@ -0,0 +1 @@
+{ ... }: "aho-corasick"
diff --git a/nix/readTree/tests/test-example/third_party/rustpkgs/serde.nix b/nix/readTree/tests/test-example/third_party/rustpkgs/serde.nix
new file mode 100644
index 000000000000..54b3c0503f12
--- /dev/null
+++ b/nix/readTree/tests/test-example/third_party/rustpkgs/serde.nix
@@ -0,0 +1 @@
+{ ... }: "serde"
diff --git a/nix/readTree/tests/test-example/tools/cheddar/default.nix b/nix/readTree/tests/test-example/tools/cheddar/default.nix
new file mode 100644
index 000000000000..a1919442d86d
--- /dev/null
+++ b/nix/readTree/tests/test-example/tools/cheddar/default.nix
@@ -0,0 +1 @@
+{ ... }: "cheddar"
diff --git a/nix/readTree/tests/test-example/tools/roquefort.nix b/nix/readTree/tests/test-example/tools/roquefort.nix
new file mode 100644
index 000000000000..03c7492bb6b1
--- /dev/null
+++ b/nix/readTree/tests/test-example/tools/roquefort.nix
@@ -0,0 +1 @@
+{ ... }: "roquefort"
diff --git a/nix/readTree/tests/test-marker/directory-marked/default.nix b/nix/readTree/tests/test-marker/directory-marked/default.nix
new file mode 100644
index 000000000000..a3f961128e79
--- /dev/null
+++ b/nix/readTree/tests/test-marker/directory-marked/default.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+{}
diff --git a/nix/readTree/tests/test-marker/directory-marked/nested/default.nix b/nix/readTree/tests/test-marker/directory-marked/nested/default.nix
new file mode 100644
index 000000000000..a3f961128e79
--- /dev/null
+++ b/nix/readTree/tests/test-marker/directory-marked/nested/default.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+{}
diff --git a/nix/readTree/tests/test-marker/file-children/one.nix b/nix/readTree/tests/test-marker/file-children/one.nix
new file mode 100644
index 000000000000..a3f961128e79
--- /dev/null
+++ b/nix/readTree/tests/test-marker/file-children/one.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+{}
diff --git a/nix/readTree/tests/test-marker/file-children/two.nix b/nix/readTree/tests/test-marker/file-children/two.nix
new file mode 100644
index 000000000000..a3f961128e79
--- /dev/null
+++ b/nix/readTree/tests/test-marker/file-children/two.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+{}
diff --git a/nix/readTree/tests/test-tree-traversal/default-nix/can-be-drv/default.nix b/nix/readTree/tests/test-tree-traversal/default-nix/can-be-drv/default.nix
new file mode 100644
index 000000000000..95d13d3c2750
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/default-nix/can-be-drv/default.nix
@@ -0,0 +1,7 @@
+{ ... }:
+derivation {
+  name = "im-a-drv";
+  system = builtins.currentSystem;
+  builder = "/bin/sh";
+  args = [ "-c" ''echo "" > $out'' ];
+}
diff --git a/nix/readTree/tests/test-tree-traversal/default-nix/can-be-drv/subdir/a.nix b/nix/readTree/tests/test-tree-traversal/default-nix/can-be-drv/subdir/a.nix
new file mode 100644
index 000000000000..2ee2d648f042
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/default-nix/can-be-drv/subdir/a.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+"Picked up through the drv"
diff --git a/nix/readTree/tests/test-tree-traversal/default-nix/default.nix b/nix/readTree/tests/test-tree-traversal/default-nix/default.nix
new file mode 100644
index 000000000000..6003b5398305
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/default-nix/default.nix
@@ -0,0 +1,5 @@
+{ ... }:
+
+{
+  no = "siblings should be read";
+}
diff --git a/nix/readTree/tests/test-tree-traversal/default-nix/no-merge/default.nix b/nix/readTree/tests/test-tree-traversal/default-nix/no-merge/default.nix
new file mode 100644
index 000000000000..c469533fbe5b
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/default-nix/no-merge/default.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+"I’m not merged with any children"
diff --git a/nix/readTree/tests/test-tree-traversal/default-nix/no-merge/subdir/a.nix b/nix/readTree/tests/test-tree-traversal/default-nix/no-merge/subdir/a.nix
new file mode 100644
index 000000000000..2008c2d2411f
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/default-nix/no-merge/subdir/a.nix
@@ -0,0 +1 @@
+"not accessible since parent default.nix is not an attrset"
diff --git a/nix/readTree/tests/test-tree-traversal/default-nix/sibling.nix b/nix/readTree/tests/test-tree-traversal/default-nix/sibling.nix
new file mode 100644
index 000000000000..8c57f2c16137
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/default-nix/sibling.nix
@@ -0,0 +1 @@
+"I’m left alone"
diff --git a/nix/readTree/tests/test-tree-traversal/default-nix/subdir/a.nix b/nix/readTree/tests/test-tree-traversal/default-nix/subdir/a.nix
new file mode 100644
index 000000000000..cf0ac2c8f3cf
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/default-nix/subdir/a.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+"but I’m picked up"
diff --git a/nix/readTree/tests/test-tree-traversal/no-skip-subtree/a/default.nix b/nix/readTree/tests/test-tree-traversal/no-skip-subtree/a/default.nix
new file mode 100644
index 000000000000..a586ce534ce2
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/no-skip-subtree/a/default.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+"am I subtree yet?"
diff --git a/nix/readTree/tests/test-tree-traversal/no-skip-subtree/b/c.nix b/nix/readTree/tests/test-tree-traversal/no-skip-subtree/b/c.nix
new file mode 100644
index 000000000000..06216c417be9
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/no-skip-subtree/b/c.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+"cool"
diff --git a/nix/readTree/tests/test-tree-traversal/no-skip-subtree/default.nix b/nix/readTree/tests/test-tree-traversal/no-skip-subtree/default.nix
new file mode 100644
index 000000000000..3d9f241cddb5
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/no-skip-subtree/default.nix
@@ -0,0 +1,5 @@
+{ ... }:
+
+{
+  but = "the default.nix is still read";
+}
diff --git a/nix/readTree/tests/test-tree-traversal/skip-subtree/.skip-subtree b/nix/readTree/tests/test-tree-traversal/skip-subtree/.skip-subtree
new file mode 100644
index 000000000000..87271ba5e101
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/skip-subtree/.skip-subtree
@@ -0,0 +1 @@
+this file makes subdirs be skipped, I hope
diff --git a/nix/readTree/tests/test-tree-traversal/skip-subtree/a/default.nix b/nix/readTree/tests/test-tree-traversal/skip-subtree/a/default.nix
new file mode 100644
index 000000000000..a586ce534ce2
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/skip-subtree/a/default.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+"am I subtree yet?"
diff --git a/nix/readTree/tests/test-tree-traversal/skip-subtree/b/c.nix b/nix/readTree/tests/test-tree-traversal/skip-subtree/b/c.nix
new file mode 100644
index 000000000000..06216c417be9
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/skip-subtree/b/c.nix
@@ -0,0 +1,3 @@
+{ ... }:
+
+"cool"
diff --git a/nix/readTree/tests/test-tree-traversal/skip-subtree/default.nix b/nix/readTree/tests/test-tree-traversal/skip-subtree/default.nix
new file mode 100644
index 000000000000..3d9f241cddb5
--- /dev/null
+++ b/nix/readTree/tests/test-tree-traversal/skip-subtree/default.nix
@@ -0,0 +1,5 @@
+{ ... }:
+
+{
+  but = "the default.nix is still read";
+}
diff --git a/nix/readTree/tests/test-wrong-no-dots/no-dots-in-function.nix b/nix/readTree/tests/test-wrong-no-dots/no-dots-in-function.nix
new file mode 100644
index 000000000000..4681253af831
--- /dev/null
+++ b/nix/readTree/tests/test-wrong-no-dots/no-dots-in-function.nix
@@ -0,0 +1,3 @@
+{}:
+
+"This is a function, but readTree wants to pass a bunch of arguments, and not having dots means we depend on exactly which arguments."
diff --git a/nix/readTree/tests/test-wrong-not-a-function/not-a-function.nix b/nix/readTree/tests/test-wrong-not-a-function/not-a-function.nix
new file mode 100644
index 000000000000..f46ee2a35565
--- /dev/null
+++ b/nix/readTree/tests/test-wrong-not-a-function/not-a-function.nix
@@ -0,0 +1 @@
+"This file needs to be a function, otherwise readTree doesn’t like it!"