Implement message boxes using the dialog backend

This patch adds a first dialog box type, message boxes, and a first
backend, the dialog(1) tool.  It does not yet address the problems of
output handling and backend selection.

2 files changed, 51 insertions, 0 deletions

diff --git a/tests/dialog.rs b/tests/dialog.rs
new file mode 100644
index 0000000..4c671f8
--- /dev/null
+++ b/tests/dialog.rs
@@ -0,0 +1,33 @@
+// Copyright (C) 2019 Robin Krahl <robin.krahl@ireas.org>
+// SPDX-License-Identifier: MIT
+
+use std::io::Result;
+
+use dialog::backends;
+use dialog::DialogBox;
+
+#[test]
+fn message() -> Result<()> {
+    dialog::Message::new("This is a message.")
+        .title("And this is a title:")
+        .show_with(&backends::Dialog::new())
+}
+
+#[test]
+fn backtitle() -> Result<()> {
+    let mut backend = backends::Dialog::new();
+    backend.set_backtitle("Backtitle");
+    dialog::Message::new("This is a message.")
+        .title("And this is a title:")
+        .show_with(&backend)
+}
+
+#[test]
+fn size() -> Result<()> {
+    let mut backend = backends::Dialog::new();
+    backend.set_width(100);
+    backend.set_height(10);
+    dialog::Message::new("This is a message.")
+        .title("And this is a title:")
+        .show_with(&backend)
+}
diff --git a/tests/message.rs b/tests/message.rs
new file mode 100644
index 0000000..4b1f18c
--- /dev/null
+++ b/tests/message.rs
@@ -0,0 +1,18 @@
+// Copyright (C) 2019 Robin Krahl <robin.krahl@ireas.org>
+// SPDX-License-Identifier: MIT
+
+use std::io::Result;
+
+use dialog::DialogBox;
+
+#[test]
+fn text() -> Result<()> {
+    dialog::Message::new("This is a message.").show()
+}
+
+#[test]
+fn text_title() -> Result<()> {
+    dialog::Message::new("This is a message.")
+        .title("And this is a title:")
+        .show()
+}