From ae4ebe19b66e856758cbd3a9ed768ae146c004cd Mon Sep 17 00:00:00 2001
From: Teddy Wing
Date: Mon, 14 Sep 2020 00:33:14 +0200
Subject: Add TAP test harness

Copied with alterations from git-branch-list.
---
 t/data/git-sugdiff.rs | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 t/data/git-sugdiff.rs

(limited to 't/data')

diff --git a/t/data/git-sugdiff.rs b/t/data/git-sugdiff.rs
new file mode 100644
index 0000000..df49493
--- /dev/null
+++ b/t/data/git-sugdiff.rs
@@ -0,0 +1,82 @@
+// Copyright (c) 2020  Teddy Wing
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+
+use std::env;
+use std::process;
+use std::process::Command;
+
+use exitcode;
+
+use git_suggestion::{gseprintln, for_suggestion};
+use git_suggestion::config::Config;
+use git_suggestion::diff_options;
+
+
+// TODO: one
+fn main() {
+    let args: Vec<_> = env::args().collect();
+
+    let (args, diff_args) = diff_options::parse(&args);
+
+    let config = match Config::get(
+        &args,
+        "usage: git sugdiff [options] <suggestion>...",
+    ) {
+        Ok(c) => c,
+        Err(e) => {
+            gseprintln!(e);
+
+            process::exit(exitcode::CONFIG);
+        },
+    };
+
+    // TODO two
+    for_suggestion(
+        &config,
+        |suggestion| {
+            let blob = match suggestion.blob() {
+                Ok(b) => b,
+                Err(e) => {
+                    gseprintln!(e);
+                    process::exit(exitcode::UNAVAILABLE);
+                },
+            };
+
+            let mut child = match Command::new("git")
+                .arg("--no-pager")
+                .arg("diff")
+                .args(&diff_args)
+                .arg(format!("{}:{}", suggestion.commit(), suggestion.path()))
+                .arg(blob.to_string())
+                .spawn()
+            {
+                Ok(c) => c,
+                Err(e) => {
+                    gseprintln!(e);
+                    process::exit(exitcode::UNAVAILABLE);
+                },
+            };
+
+            match child.wait() {
+                Err(e) => {
+                    gseprintln!(e);
+                    process::exit(exitcode::UNAVAILABLE);
+                },
+                _ => (),
+            };
+        },
+    );
+}
-- 
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