Refactor and add unit tests (#20)

* Use interleaving methods instead, and add unit tests

* Add unit tests to test finding ignore files

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "terraform-zap"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Chen Weiguang <[email protected]>"]
 description = "Script wrapper to perform finer terraform destroy"
 repository = "https://github.com/guangie88/terraform-zap"
@@ -16,10 +16,11 @@ codecov = { repository = "guangie88/terraform-zap" }
 derive_more = "=0.10.0"
 failure = "=0.1.1"
 is_executable = "=0.1.0"
+itertools = "=0.7.8"
 structopt = "=0.2.7"
 structopt-derive = "=0.2.7"
 subprocess = "=0.1.12"
-terraform-zap-ignore-lib = { path = "ignore-lib", version = "0.3.0" }
+terraform-zap-ignore-lib = { path = "ignore-lib", version = "0.3.1" }
 toml = "=0.4.6"
 which = "=2.0.0"
 whiteread = "=0.4.3"

ignore-lib/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "terraform-zap-ignore-lib"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Chen Weiguang <[email protected]>"]
 description = "Provides ignore implementation to terraform-zap"
 documentation = "https://docs.rs/terraform-zap-ignore-lib"

src/arg.rs

@@ -13,4 +13,8 @@ pub struct Config {
     #[structopt(short = "v", long = "verbose", parse(from_occurrences))]
     /// Verbose flag (-v, -vv, -vvv)
     pub verbose: u8,
+
+    #[structopt(short = "p", long = "pass")]
+    /// Additional arguments to pass to `terraform destroy`
+    pub pass_args: Option<String>,
 }