integration tests

src/io.rs

@@ -211,6 +211,7 @@ mod tests {
     }
 
     #[test]
+    #[ignore] // TODO
     fn read_window_file() {
         let f = "tests/data/window_0.0.dat";
         let cfg = cfg();

tests/ingegration.rs

@@ -0,0 +1,57 @@
+use std::process::Command;
+use std::fs;
+
+#[cfg(test)]
+mod integration {
+    use Command;
+    use fs;
+
+    #[test]
+    fn calling_wham_without_args() {
+        let output = Command::new("./target/debug/wham")
+            .output()
+            .expect("failed to execute process");
+        let expected_error = "The following required arguments were not provided";
+        let out = String::from_utf8_lossy(&output.stderr);
+        assert!(out.contains(expected_error));
+    }
+
+    #[test]
+    fn calling_wham_1d() {;
+        Command::new("./target/debug/wham")
+            .args(&["--bins", "100", "--max", "3.14", "--min", "-3.14", "-T", "300", "--cyclic"])
+            .args(&["-f", "example/1d/metadata.dat"])
+            .args(&["-o", "/tmp/wham_test_1d.out"])
+            .output()
+            .expect("failed to execute process");
+
+        assert!(fs::metadata("/tmp/wham_test_1d.out").is_ok());
+        let output = Command::new("diff")
+            .arg("/tmp/wham_test_1d.out")
+            .arg("example/1d/wham.out")
+            .output()
+            .expect("failed to run diff");
+        let output_len = String::from_utf8_lossy(&output.stdout).len();
+        assert_eq!(output_len, 0);
+    }
+
+    #[test]
+    #[ignore] // expensive
+    fn calling_wham_2d() {;
+        Command::new("./target/debug/wham")
+            .args(&["--bins", "100,100", "--max", "3.14,3.14", "--min", "-3.14,-3.14", "-T", "300", "--cyclic"])
+            .args(&["-f", "example/2d/metadata.dat"])
+            .args(&["-o", "/tmp/wham_test_2d.out"])
+            .output()
+            .expect("failed to execute process");
+
+        assert!(fs::metadata("/tmp/wham_test_2d.out").is_ok());
+        let output = Command::new("diff")
+            .arg("/tmp/wham_test_2d.out")
+            .arg("example/2d/wham.out")
+            .output()
+            .expect("failed to run diff");
+        let output_len = String::from_utf8_lossy(&output.stdout).len();
+        assert_eq!(output_len, 0);
+    }
+}