From 8bdd94fdecd33fee883458ff943ab0fc399259f8 Mon Sep 17 00:00:00 2001
From: replydev <commoncargo@tutanota.com>
Date: Mon, 14 Jul 2025 18:40:24 +0200
Subject: [PATCH 1/6] build: add assert_cmd as a dev dependency

---
 Cargo.lock | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml |  3 +++
 2 files changed, 75 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index 534f79e..d7bb8be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -129,6 +129,22 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
+[[package]]
+name = "assert_cmd"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bd389a4b2970a01282ee455294913c0a43724daedcd1a24c3eb0ec1c1320b66"
+dependencies = [
+ "anstyle",
+ "bstr",
+ "doc-comment",
+ "libc",
+ "predicates",
+ "predicates-core",
+ "predicates-tree",
+ "wait-timeout",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.4.0"
@@ -213,6 +229,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "234113d19d0d7d613b40e86fb654acf958910802bcceab913a4f9e7cda03b1a4"
 dependencies = [
  "memchr",
+ "regex-automata",
  "serde",
 ]
 
@@ -427,6 +444,7 @@ name = "cotp"
 version = "1.9.6"
 dependencies = [
  "aes-gcm",
+ "assert_cmd",
  "base64 0.22.1",
  "chacha20poly1305",
  "clap",
@@ -630,6 +648,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "difflib"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6184e33543162437515c2e2b48714794e37845ec9851711914eec9d308f6ebe8"
+
 [[package]]
 name = "digest"
 version = "0.10.7"
@@ -682,6 +706,12 @@ dependencies = [
  "libloading",
 ]
 
+[[package]]
+name = "doc-comment"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
+
 [[package]]
 name = "document-features"
 version = "0.2.11"
@@ -1409,6 +1439,33 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
+[[package]]
+name = "predicates"
+version = "3.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5d19ee57562043d37e82899fade9a22ebab7be9cef5026b07fda9cdd4293573"
+dependencies = [
+ "anstyle",
+ "difflib",
+ "predicates-core",
+]
+
+[[package]]
+name = "predicates-core"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "727e462b119fe9c93fd0eb1429a5f7647394014cf3c04ab2c0350eeb09095ffa"
+
+[[package]]
+name = "predicates-tree"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72dd2d6d381dfb73a193c7fca536518d7caee39fc8503f74e7dc0be0531b425c"
+dependencies = [
+ "predicates-core",
+ "termtree",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.95"
@@ -1814,6 +1871,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "termtree"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f50febec83f5ee1df3015341d8bd429f2d1cc62bcba7ea2076759d315084683"
+
 [[package]]
 name = "thiserror"
 version = "2.0.12"
@@ -2008,6 +2071,15 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
+[[package]]
+name = "wait-timeout"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ac3b126d3914f9849036f826e054cbabdc8519970b8998ddaf3b5bd3c65f11"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
diff --git a/Cargo.toml b/Cargo.toml
index 0119a20..32ddab7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -55,3 +55,6 @@ color-eyre = "0.6.5"
 enum_dispatch = "0.3.13"
 derive_builder = "0.20.1"
 globset = "0.4.16"
+
+[dev-dependencies]
+assert_cmd = "2.0.17"

From 689c7e23929f35305671094ad6fdfd5a1560e97f Mon Sep 17 00:00:00 2001
From: replydev <commoncargo@tutanota.com>
Date: Mon, 14 Jul 2025 18:56:01 +0200
Subject: [PATCH 2/6] test: add first integration test

---
 Cargo.lock                     | 31 +++++++++++++++++++++++++++++++
 Cargo.toml                     |  1 +
 tests/cli_integration_tests.rs | 16 ++++++++++++++++
 3 files changed, 48 insertions(+)
 create mode 100644 tests/cli_integration_tests.rs

diff --git a/Cargo.lock b/Cargo.lock
index d7bb8be..e7ce508 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -460,6 +460,7 @@ dependencies = [
  "hex",
  "hmac",
  "md-5",
+ "predicates",
  "qrcode",
  "ratatui",
  "rpassword",
@@ -771,6 +772,15 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "float-cmp"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b09cf3155332e944990140d967ff5eceb70df778b34f77d8075db46e4704e6d8"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -1247,6 +1257,12 @@ dependencies = [
  "memoffset",
 ]
 
+[[package]]
+name = "normalize-line-endings"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61807f77802ff30975e01f4f071c8ba10c022052f98b3294119f3e615d13e5be"
+
 [[package]]
 name = "num-conv"
 version = "0.1.0"
@@ -1447,7 +1463,10 @@ checksum = "a5d19ee57562043d37e82899fade9a22ebab7be9cef5026b07fda9cdd4293573"
 dependencies = [
  "anstyle",
  "difflib",
+ "float-cmp",
+ "normalize-line-endings",
  "predicates-core",
+ "regex",
 ]
 
 [[package]]
@@ -1550,6 +1569,18 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "regex"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
 [[package]]
 name = "regex-automata"
 version = "0.4.9"
diff --git a/Cargo.toml b/Cargo.toml
index 32ddab7..4397672 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -58,3 +58,4 @@ globset = "0.4.16"
 
 [dev-dependencies]
 assert_cmd = "2.0.17"
+predicates = "3.1.3"
diff --git a/tests/cli_integration_tests.rs b/tests/cli_integration_tests.rs
new file mode 100644
index 0000000..04bc29f
--- /dev/null
+++ b/tests/cli_integration_tests.rs
@@ -0,0 +1,16 @@
+use assert_cmd::Command;
+use predicates::str::is_match;
+
+#[test]
+fn test_version_subcommand() {
+    // Arrange / Act
+    let assertion = Command::cargo_bin("cotp")
+        .unwrap()
+        .arg("--version")
+        .assert();
+
+    // Assert
+    assertion
+        .success()
+        .stdout(is_match("^cotp \\d+\\.\\d+\\.\\d+-DEBUG-.+").unwrap());
+}

From ea2b91f72d9aec2e5b6e475ebe5a0c90dffe0563 Mon Sep 17 00:00:00 2001
From: replydev <commoncargo@tutanota.com>
Date: Mon, 14 Jul 2025 19:03:13 +0200
Subject: [PATCH 3/6] test: add help integration test

---
 tests/cli_integration_tests.rs | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/tests/cli_integration_tests.rs b/tests/cli_integration_tests.rs
index 04bc29f..dfcbaf6 100644
--- a/tests/cli_integration_tests.rs
+++ b/tests/cli_integration_tests.rs
@@ -1,5 +1,5 @@
 use assert_cmd::Command;
-use predicates::str::is_match;
+use predicates::str::{is_empty, is_match, starts_with};
 
 #[test]
 fn test_version_subcommand() {
@@ -12,5 +12,22 @@ fn test_version_subcommand() {
     // Assert
     assertion
         .success()
-        .stdout(is_match("^cotp \\d+\\.\\d+\\.\\d+-DEBUG-.+").unwrap());
+        .stdout(is_match("^cotp \\d+\\.\\d+\\.\\d+-DEBUG-.+").unwrap())
+        .stderr(is_empty());
+}
+
+#[test]
+fn test_help_subcommand() {
+    // Arrange / Act
+    let assertion = Command::cargo_bin("cotp").unwrap().arg("--help").assert();
+
+    // Assert
+    assertion
+        .success()
+        .stdout(starts_with(
+            "Trustworthy, encrypted, command-line TOTP/HOTP authenticator app with import functionality.
+
+Usage: cotp [OPTIONS] [COMMAND]",
+        ))
+        .stderr(is_empty());
 }

From 91107c8cc15353203407e765c8893ade5905809a Mon Sep 17 00:00:00 2001
From: replydev <commoncargo@tutanota.com>
Date: Mon, 14 Jul 2025 19:26:40 +0200
Subject: [PATCH 4/6] test: add subcommand integration tests

---
 Cargo.lock                                    | 115 ++++++++++++++++++
 Cargo.toml                                    |   1 +
 .../cli_integration_test/empty_database       |   1 +
 tests/add_integration_tests.rs                |  28 +++++
 4 files changed, 145 insertions(+)
 create mode 100644 test_samples/cli_integration_test/empty_database
 create mode 100644 tests/add_integration_tests.rs

diff --git a/Cargo.lock b/Cargo.lock
index e7ce508..afb9b07 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -145,6 +145,21 @@ dependencies = [
  "wait-timeout",
 ]
 
+[[package]]
+name = "assert_fs"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a652f6cb1f516886fcfee5e7a5c078b9ade62cfcb889524efe5a64d682dd27a9"
+dependencies = [
+ "anstyle",
+ "doc-comment",
+ "globwalk",
+ "predicates",
+ "predicates-core",
+ "predicates-tree",
+ "tempfile",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.4.0"
@@ -445,6 +460,7 @@ version = "1.9.6"
 dependencies = [
  "aes-gcm",
  "assert_cmd",
+ "assert_fs",
  "base64 0.22.1",
  "chacha20poly1305",
  "clap",
@@ -484,6 +500,31 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crossbeam-deque"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9dd111b7b7f7d55b72c0a6ae361660ee5853c9af73f70c3c2ef6858b950e2e51"
+dependencies = [
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.9.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b82ac4a3c2ca9c3460964f020e1402edd5753411d7737aa39c3714ad1b5420e"
+dependencies = [
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
+
 [[package]]
 name = "crossterm"
 version = "0.28.1"
@@ -772,6 +813,12 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "fastrand"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
+
 [[package]]
 name = "float-cmp"
 version = "0.10.0"
@@ -874,6 +921,17 @@ dependencies = [
  "regex-syntax",
 ]
 
+[[package]]
+name = "globwalk"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bf760ebf69878d9fd8f110c89703d90ce35095324d1f1edcb595c63945ee757"
+dependencies = [
+ "bitflags 2.9.1",
+ "ignore",
+ "walkdir",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.15.3"
@@ -1028,6 +1086,22 @@ dependencies = [
  "icu_properties",
 ]
 
+[[package]]
+name = "ignore"
+version = "0.4.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d89fd380afde86567dfba715db065673989d6253f42b88179abd3eae47bda4b"
+dependencies = [
+ "crossbeam-deque",
+ "globset",
+ "log",
+ "memchr",
+ "regex-automata",
+ "same-file",
+ "walkdir",
+ "winapi-util",
+]
+
 [[package]]
 name = "image"
 version = "0.25.6"
@@ -1683,6 +1757,15 @@ dependencies = [
  "cipher",
 ]
 
+[[package]]
+name = "same-file"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "scoped-tls"
 version = "1.0.1"
@@ -1902,6 +1985,19 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "tempfile"
+version = "3.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8a64e3985349f2441a1a9ef0b853f869006c3855f2cda6862a94d26ebb9d6a1"
+dependencies = [
+ "fastrand",
+ "getrandom 0.3.3",
+ "once_cell",
+ "rustix 1.0.7",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "termtree"
 version = "0.5.1"
@@ -2111,6 +2207,16 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "walkdir"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
+dependencies = [
+ "same-file",
+ "winapi-util",
+]
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -2227,6 +2333,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
+dependencies = [
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "winapi-wsapoll"
 version = "0.1.2"
diff --git a/Cargo.toml b/Cargo.toml
index 4397672..fbf6863 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -58,4 +58,5 @@ globset = "0.4.16"
 
 [dev-dependencies]
 assert_cmd = "2.0.17"
+assert_fs = "1.1.3"
 predicates = "3.1.3"
diff --git a/test_samples/cli_integration_test/empty_database b/test_samples/cli_integration_test/empty_database
new file mode 100644
index 0000000..56c8680
--- /dev/null
+++ b/test_samples/cli_integration_test/empty_database
@@ -0,0 +1 @@
+{"version":1,"nonce":"MRFGJOdHjt9wrSbqlWHrwmMGENmjjCMh","salt":"eQkRyDUTaaWNVy/+S/CXIw==","cipher":"tBtvz2AOp7XPUJGSLkm+Ss+exKFjd0eA1UWd58nM/I45P7VmdK6/28c9vw=="}
\ No newline at end of file
diff --git a/tests/add_integration_tests.rs b/tests/add_integration_tests.rs
new file mode 100644
index 0000000..8e68083
--- /dev/null
+++ b/tests/add_integration_tests.rs
@@ -0,0 +1,28 @@
+use assert_cmd::Command;
+use predicates::{
+    ord::eq,
+    str::{is_empty, is_match, starts_with},
+};
+
+#[test]
+fn add_without_label_should_fail() {
+    // Arrange / Act
+    let assertion = Command::cargo_bin("cotp")
+        .unwrap()
+        .arg("--database-path")
+        .arg("test_samples/cli_integration_test/empty_database")
+        .arg("add")
+        .assert();
+
+    // Assert
+    assertion.failure().code(2).stdout(is_empty()).stderr(eq(
+        "error: the following required arguments were not provided:
+  --otpuri
+  --label <LABEL>
+
+Usage: cotp add --otpuri --label <LABEL>
+
+For more information, try '--help'.
+",
+    ));
+}

From 3a1ae93bd8bd932d2ef881642619043c404c8119 Mon Sep 17 00:00:00 2001
From: replydev <commoncargo@tutanota.com>
Date: Mon, 14 Jul 2025 20:05:30 +0200
Subject: [PATCH 5/6] test: add option to take secret from stdin

---
 src/arguments/add.rs | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/arguments/add.rs b/src/arguments/add.rs
index 875de4c..030978b 100644
--- a/src/arguments/add.rs
+++ b/src/arguments/add.rs
@@ -1,5 +1,7 @@
+use std::io::{self, BufRead};
+
 use clap::{Args, value_parser};
-use color_eyre::eyre::{ErrReport, Result};
+use color_eyre::eyre::{self, ErrReport, Result};
 
 use zeroize::Zeroize;
 
@@ -60,6 +62,10 @@ pub struct AddArgs {
         required_if_eq("otp_type", "MOTP")
     )]
     pub pin: Option<String>,
+
+    /// Pass the secret through the standard input
+    #[arg(long = "secret-stdin", default_value_t = false)]
+    take_secret_from_stdin: bool,
 }
 
 impl SubcommandExecutor for AddArgs {
@@ -79,7 +85,15 @@ impl SubcommandExecutor for AddArgs {
 }
 
 fn get_from_args(matches: AddArgs) -> color_eyre::Result<OTPElement> {
-    let secret = rpassword::prompt_password("Insert the secret: ").map_err(ErrReport::from)?;
+    let secret = if matches.take_secret_from_stdin {
+        if let Some(password) = io::stdin().lock().lines().next() {
+            password.map_err(ErrReport::from)
+        } else {
+            Err(eyre::eyre!("Error during reading from stdin"))
+        }
+    } else {
+        rpassword::prompt_password("Insert the secret: ").map_err(ErrReport::from)
+    }?;
     map_args_to_code(secret, matches)
 }
 

From ba91caf1b9c0edfe56e3e484b9c1e2eb576cbef6 Mon Sep 17 00:00:00 2001
From: replydev <commoncargo@tutanota.com>
Date: Mon, 14 Jul 2025 20:05:43 +0200
Subject: [PATCH 6/6] test: add more add integration tests

---
 Cargo.lock                     | 34 ++++++++++++++++++++++++++++++++++
 Cargo.toml                     |  1 +
 tests/add_integration_tests.rs | 33 +++++++++++++++++++++++++++++----
 3 files changed, 64 insertions(+), 4 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index afb9b07..304e787 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -486,6 +486,7 @@ dependencies = [
  "serde_json",
  "sha1",
  "sha2",
+ "test-case",
  "url",
  "urlencoding",
  "zeroize",
@@ -2004,6 +2005,39 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f50febec83f5ee1df3015341d8bd429f2d1cc62bcba7ea2076759d315084683"
 
+[[package]]
+name = "test-case"
+version = "3.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb2550dd13afcd286853192af8601920d959b14c401fcece38071d53bf0768a8"
+dependencies = [
+ "test-case-macros",
+]
+
+[[package]]
+name = "test-case-core"
+version = "3.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "adcb7fd841cd518e279be3d5a3eb0636409487998a4aff22f3de87b81e88384f"
+dependencies = [
+ "cfg-if",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "test-case-macros"
+version = "3.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c89e72a01ed4c579669add59014b9a524d609c0c88c6a585ce37485879f6ffb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "test-case-core",
+]
+
 [[package]]
 name = "thiserror"
 version = "2.0.12"
diff --git a/Cargo.toml b/Cargo.toml
index fbf6863..e85980c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -60,3 +60,4 @@ globset = "0.4.16"
 assert_cmd = "2.0.17"
 assert_fs = "1.1.3"
 predicates = "3.1.3"
+test-case = "3.3.1"
diff --git a/tests/add_integration_tests.rs b/tests/add_integration_tests.rs
index 8e68083..fb080c8 100644
--- a/tests/add_integration_tests.rs
+++ b/tests/add_integration_tests.rs
@@ -1,8 +1,6 @@
 use assert_cmd::Command;
-use predicates::{
-    ord::eq,
-    str::{is_empty, is_match, starts_with},
-};
+use predicates::{ord::eq, str::is_empty};
+use test_case::test_case;
 
 #[test]
 fn add_without_label_should_fail() {
@@ -26,3 +24,30 @@ For more information, try '--help'.
 ",
     ));
 }
+
+#[test_case("-l" ; "Short subcommand")]
+#[test_case("--label" ; "Long subcommand")]
+fn add_with_label_should_work(label_arg: &str) {
+    // Arrange / Act
+    let assertion = Command::cargo_bin("cotp")
+        .unwrap()
+        .arg("--password-stdin")
+        .arg("--database-path")
+        .arg("test_samples/cli_integration_test/empty_database")
+        .arg("add")
+        .arg(label_arg)
+        .arg("test")
+        .arg("--secret-stdin")
+        .write_stdin(
+            "12345678
+AA
+        ",
+        )
+        .assert();
+
+    // Assert
+    assertion
+        .success()
+        .stderr(is_empty())
+        .stdout(eq("Modifications have been persisted\n"));
+}