fix(CLI): NULL default values instead of randoms

Instead of generating nonesense random values, we just map defaults
that represent the respective NULL value of a given type.

Author: Byron

src/mako/cli/lib/cli.py

@@ -49,6 +49,17 @@
                      'int64' : lambda: randint(-101, -1),
                      'string': lambda: '%s' % choice(util.words).lower()}
 
+JSON_TYPE_VALUE_MAP = {'boolean': 'false',
+                       'integer' : '-0',
+                       'uint32' : '0',
+                       'uint64' : '0',
+                       'float' : '0.0',
+                       'double' : '0.0',
+                       'number' : '0.0',
+                       'int32' : '-0',
+                       'int64' : '-0',
+                       'string': ''}
+
 assert len(set(JSON_TYPE_RND_MAP.keys()) ^ POD_TYPES) == 0
 
 def new_method_context(resource, method, c):

src/mako/cli/lib/engine.mako

@@ -4,7 +4,7 @@
                       upload_action_fn)
     from cli import (mangle_subcommand, new_method_context, PARAM_FLAG, STRUCT_FLAG, UPLOAD_FLAG, OUTPUT_FLAG, VALUE_ARG,
                      CONFIG_DIR, SCOPE_FLAG, is_request_value_property, FIELD_SEP, docopt_mode, FILE_ARG, MIME_ARG, OUT_ARG, 
-                     cmd_ident, call_method_ident, arg_ident, POD_TYPES, flag_ident, ident, JSON_TYPE_RND_MAP)
+                     cmd_ident, call_method_ident, arg_ident, POD_TYPES, flag_ident, ident, JSON_TYPE_VALUE_MAP)
 
     v_arg = '<%s>' % VALUE_ARG
     SOPT = 'self.opt.'
@@ -184,7 +184,7 @@ for parg in ${SOPT + arg_ident(VALUE_ARG)}.iter() {
     ptype = p.type
     if p.type == 'string' and 'Count' in p.name:
         ptype = 'int64'
-    value_unwrap = 'value.unwrap_or("%s")' % JSON_TYPE_RND_MAP[ptype]()
+    value_unwrap = 'value.unwrap_or("%s")' % JSON_TYPE_VALUE_MAP[ptype]
 %>\
         "${mangle_subcommand(p.name)}" => {
         % if p.name == 'alt':

src/mako/cli/main.rs.mako

@@ -31,7 +31,6 @@ ${engine.new(c)}\
 
 fn main() {
     let opts: Options = Options::docopt().decode().unwrap_or_else(|e| e.exit());
-    println!("DEBUG: {:?}", opts);
     match Engine::new(opts) {
         Err(err) => {
             write!(io::stderr(), "{}", err).ok();

src/rust/cli/cmn.rs

@@ -196,7 +196,7 @@ impl fmt::Display for CLIError {
             CLIError::UnknownParameter(ref param_name) 
                 => writeln!(f, "Parameter '{}' is unknown.", param_name),
             CLIError::InvalidKeyValueSyntax(ref kv)
-                => writeln!(f, "'{}' does not match <key>=<value>", kv),
+                => writeln!(f, "'{}' does not match pattern <key>=<value>", kv),
 
         }
     }