tests(clap_app!): Added test for clap_app! macro.

tests/macros.rs

@@ -0,0 +1,35 @@
+#[macro_use]
+extern crate clap;
+
+#[test]
+fn basic() {
+    clap_app!(claptests =>
+        (version: "0.1")
+        (about: "tests clap library")
+        (author: "Kevin K. <[email protected]>")
+        (@arg opt: -o --option +takes_value ... "tests options")
+        (@arg positional: index(1) "tests positionals")
+        (@arg flag: -f --flag ... +global "tests flags")
+        (@arg flag2: -F conflicts_with[flag] requires[option2]
+            "tests flags with exclusions")
+        (@arg option2: --long_option_2 conflicts_with[option] requires[positional2]
+            "tests long options with exclusions")
+        (@arg positional2: index(2) "tests positionals with exclusions")
+        (@arg option3: -O --Option +takes_value possible_value[fast slow]
+            "tests options with specific value sets")
+        (@arg positional3: index(3) ... possible_value[vi emacs]
+            "tests positionals with specific values")
+        (@arg multvals: --multvals +takes_value value_name[one two]
+            "Tests mutliple values, not mult occs")
+        (@arg multvalsmo: --multvalsmo ... +takes_value value_name[one two]
+            "Tests mutliple values, not mult occs")
+        (@arg minvals: --minvals2 min_values(1) ... +takes_value "Tests 2 min vals")
+        (@arg maxvals: --maxvals3 ... +takes_value max_values(3) "Tests 3 max vals")
+        (@subcommand subcmd =>
+            (about: "tests subcommands")
+            (version: "0.1")
+            (author: "Kevin K. <[email protected]>")
+            (@arg scoption: -o --option ... +takes_value "tests options")
+            (@arg scpositional: index(1) "tests positionals"))
+    );
+}