1 files changed, 59 insertions, 0 deletions
diff --git a/servo/tests/unit/style/properties/scaffolding.rs b/servo/tests/unit/style/properties/scaffolding.rs
new file mode 100644
index 0000000000..7c09f51176
--- /dev/null
+++ b/servo/tests/unit/style/properties/scaffolding.rs
@@ -0,0 +1,59 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use serde_json::{self, Value};
+use std::env;
+use std::fs::{File, remove_file};
+use std::path::Path;
+use std::process::Command;
+
+#[test]
+fn properties_list_json() {
+    let top = Path::new(&env::var("CARGO_MANIFEST_DIR").unwrap()).join("..").join("..").join("..");
+    let json = top.join("target").join("doc").join("servo").join("css-properties.json");
+    if json.exists() {
+        remove_file(&json).unwrap()
+    }
+    let python = env::var("PYTHON").ok().unwrap_or_else(find_python);
+    let script = top.join("components").join("style").join("properties").join("build.py");
+    let status = Command::new(python)
+        .arg(&script)
+        .arg("servo")
+        .arg("html")
+        .arg("regular")
+        .status()
+        .unwrap();
+    assert!(status.success(), "{:?}", status);
+
+    let properties: Value = serde_json::from_reader(File::open(json).unwrap()).unwrap();
+    assert!(properties.as_object().unwrap().len() > 100);
+    assert!(properties.as_object().unwrap().contains_key("margin"));
+    assert!(properties.as_object().unwrap().contains_key("margin-top"));
+}
+
+#[cfg(windows)]
+fn find_python() -> String {
+    if Command::new("python2.7.exe").arg("--version").output().is_ok() {
+        return "python2.7.exe".to_owned();
+    }
+
+    if Command::new("python27.exe").arg("--version").output().is_ok() {
+        return "python27.exe".to_owned();
+    }
+
+    if Command::new("python.exe").arg("--version").output().is_ok() {
+        return "python.exe".to_owned();
+    }
+
+    panic!("Can't find python (tried python27.exe and python.exe)! Try fixing PATH or setting the PYTHON env var");
+}
+
+#[cfg(not(windows))]
+fn find_python() -> String {
+    if Command::new("python2.7").arg("--version").output().unwrap().status.success() {
+        "python2.7"
+    } else {
+        "python"
+    }.to_owned()
+}