document throws, run alejandra

testing/default.nix

@@ -1,4 +1,4 @@
-{ pkgs ? import <nixpkgs> { } }: {
+{pkgs ? import <nixpkgs> {}}: {
   run = import ./run.nix pkgs;
   it = import ./it.nix;
   import = import ./import.nix;

testing/import.nix

@@ -1,6 +1,7 @@
-path:
-let it = import ./it.nix;
-in builtins.trace ("testing " + builtins.baseNameOf path) {
-  inherit path;
-  results = (import path { inherit it; });
-}
+path: let
+  it = import ./it.nix;
+in
+  builtins.trace ("testing " + builtins.baseNameOf path) {
+    inherit path;
+    results = import path {inherit it;};
+  }

testing/it.nix

@@ -1,41 +1,51 @@
-msg:
-{ actual, expected ? { }, asString ? false, asJSON ? false
-, removeDunders ? false, safeToPrint ? true, throws ? false }:
-let
+msg: {
+  actual,
+  expected ? {},
+  asString ? false,
+  asJSON ? false,
+  removeDunders ? false,
+  safeToPrint ? true,
+  throws ? false,
+}: let
   preProcess = v:
-    if removeDunders then
-      undunder v
-    else if asString then
-      toString v
-    else if asJSON then
-      builtins.toJSON v
-    else
-      v;
+    if removeDunders
+    then undunder v
+    else if asString
+    then toString v
+    else if asJSON
+    then builtins.toJSON v
+    else v;
 
   a = preProcess actual;
   e = preProcess expected;
 
   undunder = v:
-    if builtins.isAttrs v then
-      builtins.removeAttrs v [ "__toString" "__functor" ]
-    else
-      v;
+    if builtins.isAttrs v
+    then builtins.removeAttrs v ["__toString" "__functor"]
+    else v;
 
-  out = (if safeToPrint then
-    builtins.toJSON (undunder (if throws then
-      (builtins.tryEval actual).value
-    else {
-      inherit actual expected;
-    }))
-  else
-    ''{"msg": "cannot be stringified ):"}'');
+  out =
+    if safeToPrint
+    then
+      builtins.toJSON (undunder (
+        if throws
+        then (builtins.tryEval actual).value
+        else {
+          inherit actual expected;
+        }
+      ))
+    else ''{"msg": "cannot be stringified ):"}'';
 
   success =
-    if throws then (builtins.tryEval actual).success == false else (a == e);
-
-in {
-  inherit success msg;
-} // (if success then
-  { }
-else
-  builtins.trace "FAILED ${msg}" { inherit actual expected; })
+    if throws
+    then (builtins.tryEval actual).success == false
+    else (a == e);
+in
+  {
+    inherit success msg;
+  }
+  // (
+    if success
+    then {}
+    else builtins.trace "FAILED ${msg}" {inherit actual expected;}
+  )

testing/run.nix

@@ -1,5 +1,4 @@
-pkgs: files:
-let
+pkgs: files: let
   test = import ./import.nix;
   res = map test files;
   resFile = builtins.toFile "results" (builtins.toJSON res);

testing/watch.nix

@@ -7,4 +7,3 @@ pkgs.writeShellScriptBin "watch" ''
     pkill ${pname}
   done
 ''
-