Move tests of known broken examples to own module

Author: istathar

tests/parsing/broken.rs

@@ -0,0 +1,51 @@
+use std::fs;
+use std::path::Path;
+
+use technique::parsing;
+
+#[test]
+fn ensure_fail() {
+    let dir = Path::new("tests/broken/");
+
+    assert!(dir.exists(), "broken directory missing");
+
+    let entries = fs::read_dir(dir).expect("Failed to read broken directory");
+
+    let mut files = Vec::new();
+    for entry in entries {
+        let entry = entry.expect("Failed to read directory entry");
+        let path = entry.path();
+
+        if path
+            .extension()
+            .and_then(|s| s.to_str())
+            == Some("tq")
+        {
+            files.push(path);
+        }
+    }
+
+    assert!(!files.is_empty(), "No .tq files found in broken directory");
+
+    let mut unexpected_successes = Vec::new();
+
+    for file in &files {
+        let content = parsing::load(&file)
+            .unwrap_or_else(|e| panic!("Failed to load file {:?}: {:?}", file, e));
+
+        match parsing::parse(&file, &content) {
+            Ok(_) => {
+                println!("File {:?} unexpectedly parsed successfully", file);
+                unexpected_successes.push(file.clone());
+            }
+            Err(_) => {}
+        }
+    }
+
+    if !unexpected_successes.is_empty() {
+        panic!(
+            "Broken files should not to parse successfully, but {} files passed",
+            unexpected_successes.len()
+        );
+    }
+}