Initial setup for integration tests.

tests/common.rs

@@ -0,0 +1,18 @@
+use std::fs::File;
+use std::io::Write;
+
+pub const PLAIN_FILE_CONTENT: &str = "some sensitive data";
+
+pub const TEST_FILE: &str = "target/test/test.txt";
+const TEST_DIR: &str = "target/test";
+
+pub fn setup() {
+    std::fs::create_dir_all(TEST_DIR).unwrap();
+    let mut file = File::create("target/test/test.txt").unwrap();
+    file.write(PLAIN_FILE_CONTENT.as_bytes()).unwrap();
+}
+
+pub fn cleanup() {
+    std::fs::remove_file(TEST_FILE).unwrap();
+    std::fs::remove_dir(TEST_DIR).unwrap();
+}

tests/integration_test.rs

@@ -0,0 +1,30 @@
+extern crate rshred;
+
+use ntest::timeout;
+use ntest::assert_false;
+
+mod common;
+
+#[test]
+#[timeout(1000)]
+fn test_basic_shredding() {
+    common::setup();
+
+    let initial_file_length = std::fs::metadata(common::TEST_FILE).unwrap().len();
+
+    let options = rshred::ShredOptions::new(common::TEST_FILE.to_string())
+        .set_verbosity(rshred::Verbosity::None)
+        .set_is_interactive(false)
+        .set_keep_files(true)
+        .build();
+    rshred::Shredder::with_options(options).run();
+
+    let shredded_file_length = std::fs::metadata(common::TEST_FILE).unwrap().len();
+    // file's size hasn't changed
+    assert_eq!(initial_file_length, shredded_file_length);
+
+    // file's content will become an invalid UTF-8 string
+    assert_false!(std::fs::read_to_string(common::TEST_FILE).is_ok());
+
+    common::cleanup();
+}