Add tests for mixed case booleans

Author: ctavan

test/getenv.js

@@ -13,8 +13,10 @@ process.env.TEST_GETENV_FLOAT2 = '0.0';
 process.env.TEST_GETENV_INFINITY1 = Infinity;
 process.env.TEST_GETENV_INFINITY2 = -Infinity;
 process.env.TEST_GETENV_FALSE = 'false';
+process.env.TEST_GETENV_FALSE1 = 'False';
 process.env.TEST_GETENV_FALSE2 = 'FALSE';
 process.env.TEST_GETENV_TRUE = 'true';
+process.env.TEST_GETENV_TRUE1 = 'True';
 process.env.TEST_GETENV_TRUE2 = 'TRUE';
 process.env.TEST_GETENV_NOT_REALLY_TRUE = '1';
 process.env.TEST_GETENV_NOT_REALLY_FALSE = '0';
@@ -204,6 +206,10 @@ tests['getenv.bool() valid input'] = function () {
       varName: 'TEST_GETENV_FALSE',
       expected: false,
     },
+    {
+      varName: 'TEST_GETENV_FALSE1',
+      expected: false,
+    },
     {
       varName: 'TEST_GETENV_FALSE2',
       expected: false,
@@ -212,6 +218,10 @@ tests['getenv.bool() valid input'] = function () {
       varName: 'TEST_GETENV_TRUE',
       expected: true,
     },
+    {
+      varName: 'TEST_GETENV_TRUE1',
+      expected: true,
+    },
     {
       varName: 'TEST_GETENV_TRUE2',
       expected: true,