test: add subcommand integration tests

Author: replydev

Cargo.lock

@@ -58,4 +58,5 @@ globset = "0.4.16"
 
 [dev-dependencies]
 assert_cmd = "2.0.17"
+assert_fs = "1.1.3"
 predicates = "3.1.3"

Cargo.toml

@@ -0,0 +1 @@
+{"version":1,"nonce":"MRFGJOdHjt9wrSbqlWHrwmMGENmjjCMh","salt":"eQkRyDUTaaWNVy/+S/CXIw==","cipher":"tBtvz2AOp7XPUJGSLkm+Ss+exKFjd0eA1UWd58nM/I45P7VmdK6/28c9vw=="}

test_samples/cli_integration_test/empty_database

@@ -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'.
+",
+    ));
+}