Added error util, finished network graph.

2 files changed, 40 insertions, 0 deletions

diff --git a/tests/arg_tests.rs b/tests/arg_tests.rs
new file mode 100644
index 00000000..978b24c6
--- /dev/null
+++ b/tests/arg_tests.rs
@@ -0,0 +1,40 @@
+use std::process::Command;  // Run programs
+use assert_cmd::prelude::*; // Add methods on commands
+use predicates::prelude::*; // Used for writing assertions
+
+#[test]
+fn test_small_rate -> Result<(), Box<std::error::Error>> {
+    let mut cmd = Command::main_binary()?;
+    cmd.arg("-r")
+        .arg("249");
+    cmd.assert()
+        .failure()
+        .stderr(predicate::str::contains("rate"));
+
+    Ok(())
+}
+
+#[test]
+fn test_negative_rate -> Result<(), Box<std::error::Error>> {
+    // This test should auto fail due to how clap works
+    let mut cmd = Command::main_binary()?;
+    cmd.arg("-r")
+        .arg("-1000");
+    cmd.assert()
+        .failure()
+        .stderr(predicate::str::contains("valid"));
+
+    Ok(())
+}
+
+#[test]
+fn test_invalid_rate -> Result<(), Box<std::error::Error>> {
+    let mut cmd = Command::main_binary()?;
+    cmd.arg("-r")
+        .arg("1000 - 100");
+    cmd.assert()
+        .failure()
+        .stderr(predicate::str::contains("digit"));
+
+    Ok(())
+}
\ No newline at end of file
diff --git a/tests/basic_tests.rs b/tests/basic_tests.rs
deleted file mode 100644
index e69de29b..00000000
--- a/tests/basic_tests.rs
+++ /dev/null