From 27511032fda7a498eb7d631070754a3172daa499 Mon Sep 17 00:00:00 2001
From: Esben Sonne <esbensonne@gmail.com>
Date: Tue, 6 Feb 2018 13:19:55 +0100
Subject: [PATCH 1/2] Support static vars

Hardcoded primitives fallthrough parsing and are returned as is.
This comes in handy in the cases where something is required by
other configs, but a static config is fine.

It does make config kind of a three-way train crash, with parsing,
defaults, and static vars.
---
 envargs/parser.py     |  2 ++
 tests/test_parsing.py | 26 ++++++++++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/envargs/parser.py b/envargs/parser.py
index 2c5e90c..ad2ac6a 100644
--- a/envargs/parser.py
+++ b/envargs/parser.py
@@ -27,6 +27,8 @@ def _load_values(values, fields):
                 yield dest, value
         elif isinstance(field, dict):
             yield dest, dict(_load_values(values, field))
+        elif isinstance(field, (int, float, str, bytes)):
+            yield dest, field
 
 
 def parse_dict(values, fields):
diff --git a/tests/test_parsing.py b/tests/test_parsing.py
index df74e38..90e9fde 100644
--- a/tests/test_parsing.py
+++ b/tests/test_parsing.py
@@ -232,3 +232,29 @@ def test_nesting():
             'an_int': 10,
         },
     }
+
+
+def test_static_vars():
+    """Test that hardcoded vars fall through parsing."""
+    args = {
+        'a_var': Var(
+            use=int,
+            load_from='A_VAR',
+        ),
+        'some_bytes': b'bytes!',
+        'a_string': 'my string',
+        'a_float': 1.5,
+        'a_int': 1,
+    }
+
+    values = {
+        'A_VAR': '0',
+    }
+
+    assert parse_dict(values, args) == {
+        'a_var': 0,
+        'some_bytes': b'bytes!',
+        'a_string': 'my string',
+        'a_float': 1.5,
+        'a_int': 1,
+    }

From 800bee3d5175797e919f6f15078f09ea25e92741 Mon Sep 17 00:00:00 2001
From: Esben Sonne <esbensonne@gmail.com>
Date: Tue, 6 Feb 2018 15:22:51 +0100
Subject: [PATCH 2/2] Support bools too

---
 envargs/parser.py     | 2 +-
 tests/test_parsing.py | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/envargs/parser.py b/envargs/parser.py
index ad2ac6a..3745050 100644
--- a/envargs/parser.py
+++ b/envargs/parser.py
@@ -27,7 +27,7 @@ def _load_values(values, fields):
                 yield dest, value
         elif isinstance(field, dict):
             yield dest, dict(_load_values(values, field))
-        elif isinstance(field, (int, float, str, bytes)):
+        elif isinstance(field, (int, float, str, bytes, bool)):
             yield dest, field
 
 
diff --git a/tests/test_parsing.py b/tests/test_parsing.py
index 90e9fde..91555dc 100644
--- a/tests/test_parsing.py
+++ b/tests/test_parsing.py
@@ -245,6 +245,7 @@ def test_static_vars():
         'a_string': 'my string',
         'a_float': 1.5,
         'a_int': 1,
+        'a_bool': True,
     }
 
     values = {
@@ -257,4 +258,5 @@ def test_static_vars():
         'a_string': 'my string',
         'a_float': 1.5,
         'a_int': 1,
+        'a_bool': True,
     }