tests/functional2/lang: Migrate builtins.toJSON

Change-Id: Ic740ab1fe0792c7e7596ae8a9beb9e76b37d6284

tests/functional2/lang/builtins.toJSON/eval-fail-lambda.err.exp

@@ -0,0 +1,18 @@
+error:
+       … while calling the 'toJSON' builtin
+         at /pwd/in.nix:1:1:
+            1| builtins.toJSON { foo = a: 1; }
+             | ^
+            2|
+
+       … while evaluating attribute 'foo'
+         at /pwd/in.nix:1:19:
+            1| builtins.toJSON { foo = a: 1; }
+             |                   ^
+            2|
+
+       error: cannot convert a function to JSON
+       at /pwd/in.nix:1:19:
+            1| builtins.toJSON { foo = a: 1; }
+             |                   ^
+            2|

tests/functional2/lang/builtins.toJSON/eval-fail-throw.err.exp

@@ -0,0 +1,50 @@
+error:
+       … while calling the 'toJSON' builtin
+         at /pwd/in.nix:1:1:
+            1| builtins.toJSON {
+             | ^
+            2|   a.b = [
+
+       … while evaluating attribute 'a'
+         at /pwd/in.nix:2:3:
+            1| builtins.toJSON {
+            2|   a.b = [
+             |   ^
+            3|     true
+
+       … while evaluating attribute 'b'
+         at /pwd/in.nix:2:3:
+            1| builtins.toJSON {
+            2|   a.b = [
+             |   ^
+            3|     true
+
+       … while evaluating list element at index 3
+         at /pwd/in.nix:2:3:
+            1| builtins.toJSON {
+            2|   a.b = [
+             |   ^
+            3|     true
+
+       … while evaluating attribute 'c'
+         at /pwd/in.nix:7:7:
+            6|     {
+            7|       c.d = throw "hah no";
+             |       ^
+            8|     }
+
+       … while evaluating attribute 'd'
+         at /pwd/in.nix:7:7:
+            6|     {
+            7|       c.d = throw "hah no";
+             |       ^
+            8|     }
+
+       … caused by explicit throw
+         at /pwd/in.nix:7:13:
+            6|     {
+            7|       c.d = throw "hah no";
+             |             ^
+            8|     }
+
+       error: hah no

tests/functional2/lang/builtins.toJSON/eval-okay.out.exp

@@ -0,0 +1 @@
+"{\"a\":123,\"b\":-456,\"c\":\"foo\",\"d\":\"foo\\n\\\"bar\\\"\",\"e\":true,\"f\":false,\"g\":[1,2,3],\"h\":[\"a\",[\"b\",{\"foo\\nbar\":{}}]],\"i\":3,\"j\":1.44,\"k\":\"foo\"}"

tests/functional2/lang/builtins.toJSON/in-lambda.nix

@@ -0,0 +1 @@
+builtins.toJSON { foo = a: 1; }

tests/functional2/lang/builtins.toJSON/in-throw.nix

@@ -0,0 +1,10 @@
+builtins.toJSON {
+  a.b = [
+    true
+    false
+    "it's a bird"
+    {
+      c.d = throw "hah no";
+    }
+  ];
+}

tests/functional2/lang/builtins.toJSON/in.nix

@@ -0,0 +1,13 @@
+builtins.toJSON
+  { a = 123;
+    b = -456;
+    c = "foo";
+    d = "foo\n\"bar\"";
+    e = true;
+    f = false;
+    g = [ 1 2 3 ];
+    h = [ "a" [ "b" { "foo\nbar" = {}; } ] ];
+    i = 1 + 2;
+    j = 1.44;
+    k = { __toString = self: self.a; a = "foo"; };
+  }