Auto merge of #1013 - polonez:feature/zsh-support, r=Diggsey

zsh install support

- add path to .zprofile
- add a test for zsh

src/rustup-cli/self_update.rs

@@ -977,8 +977,16 @@ fn get_add_path_methods() -> Vec<PathUpdateMethod> {
     }
 
     let profile = utils::home_dir().map(|p| p.join(".profile"));
-    let rcfiles = vec![profile].into_iter().filter_map(|f|f);
+    let mut profiles = vec![profile];
 
+    if let Ok(shell) = env::var("SHELL") {
+        if shell.contains("zsh") {
+            let zprofile = utils::home_dir().map(|p| p.join(".zprofile"));
+            profiles.push(zprofile);
+        }
+    }
+
+    let rcfiles = profiles.into_iter().filter_map(|f|f);
     rcfiles.map(PathUpdateMethod::RcFile).collect()
 }
 

src/rustup-mock/src/clitools.rs

@@ -62,6 +62,7 @@ pub static MULTI_ARCH1: &'static str = "i686-unknown-linux-gnu";
 pub fn setup(s: Scenario, f: &Fn(&Config)) {
     // Unset env variables that will break our testing
     env::remove_var("RUSTUP_TOOLCHAIN");
+    env::remove_var("SHELL");
 
     let exedir = TempDir::new("rustup-exe").unwrap();
     let distdir = TempDir::new("rustup-dist").unwrap();