Add regression tests.

2 files changed, 24 insertions, 0 deletions

diff --git a/03/Cargo.toml b/03/Cargo.toml
index cffd384..189ca3f 100644
--- a/03/Cargo.toml
+++ b/03/Cargo.toml
@@ -6,3 +6,6 @@ edition = "2018"
 
 [dependencies]
 advent_lib = { path = "../lib" }
+
+[dev-dependencies]
+assert_cmd = "0.10"
diff --git a/03/tests/main.rs b/03/tests/main.rs
new file mode 100644
index 0000000..f68eee5
--- /dev/null
+++ b/03/tests/main.rs
@@ -0,0 +1,21 @@
+use assert_cmd::prelude::*;
+//use predicates::prelude::*;
+use std::process::Command;
+
+
+#[test]
+fn personal_input() -> Result<(), Box<dyn std::error::Error>> {
+  let mut command = Command::cargo_bin("advent_03")?;
+
+  command.arg("input");
+  command.assert().success().stdout(
+    "dx: 1, dy: 1, trees: 60\n\
+     dx: 3, dy: 1, trees: 225\n\
+     dx: 5, dy: 1, trees: 57\n\
+     dx: 7, dy: 1, trees: 58\n\
+     dx: 1, dy: 2, trees: 25\n\
+     product: 1115775000\n");
+
+  Ok(())
+}
+