Deepseek R1 tests

Chat: https://gist.github.com/mohsen1/047be65e58ba70c0f5cdf2997b56fd8c

Author: mohsen1

tests/advanced.rs

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+use assert_cmd::prelude::*;
+use predicates::prelude::*;
+use std::process::Command;
+use tempfile::TempDir;
+
+#[test]
+fn extend_list_merging() -> Result<(), Box<dyn std::error::Error>> {
+    let dir = TempDir::new()?;
+    std::fs::write(dir.path().join("advanced-config.yaml"), 
+        "extend_list: [\"config_item\"]\noverwrite_list: [\"config_item\"]\nspecial_secret: \"secret\"\nextra_settings: { nesting_level: 3 }")?;
+
+    Command::cargo_bin("advanced")?
+        .current_dir(dir.path())
+        .arg("--extend-list")
+        .arg("cli_item")
+        .assert()
+        .success()
+        .stdout(predicate::str::contains(
+            "extend_list: [\"config_item\", \"cli_item\"]",
+        ));
+
+    Ok(())
+}
+
+#[test]
+fn overwrite_list_cli() -> Result<(), Box<dyn std::error::Error>> {
+    let dir = TempDir::new()?;
+    std::fs::write(dir.path().join("advanced-config.yaml"), 
+        "overwrite_list: [\"config_item\"]\nspecial_secret: \"secret\"\nextra_settings: { nesting_level: 3 }")?;
+
+    Command::cargo_bin("advanced")?
+        .current_dir(dir.path())
+        .arg("--overwrite-list")
+        .arg("cli_item")
+        .assert()
+        .success()
+        .stdout(predicate::str::contains("overwrite_list: [\"cli_item\"]"));
+
+    Ok(())
+}
+
+#[test]
+fn config_only_field_from_file() -> Result<(), Box<dyn std::error::Error>> {
+    let dir = TempDir::new()?;
+    std::fs::write(
+        dir.path().join("advanced-config.yaml"),
+        "special_secret: \"from_config\"\nextra_settings: { nesting_level: 3 }",
+    )?;
+
+    Command::cargo_bin("advanced")?
+        .current_dir(dir.path())
+        .assert()
+        .success()
+        .stdout(predicate::str::contains("special_secret: \"from_config\""));
+
+    Ok(())
+}
+
+#[test]
+fn cli_config_only_field_error() -> Result<(), Box<dyn std::error::Error>> {
+    Command::cargo_bin("advanced")?
+        .arg("--special-secret")
+        .arg("from_cli")
+        .assert()
+        .failure()
+        .stderr(predicate::str::contains(
+            "unexpected argument '--special-secret'",
+        ));
+
+    Ok(())
+}

tests/basic.rs

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+use assert_cmd::prelude::*;
+use predicates::prelude::*;
+use std::process::Command;
+use tempfile::TempDir;
+
+#[test]
+fn with_config_file() -> Result<(), Box<dyn std::error::Error>> {
+    let dir = TempDir::new()?;
+    std::fs::write(
+        dir.path().join("app-config.yaml"),
+        "port: 8080\ndatabase_url: \"postgres://localhost:5432/mydb\"",
+    )?;
+
+    Command::cargo_bin("basic")?
+        .current_dir(dir.path())
+        .assert()
+        .success()
+        .stdout(predicate::str::contains("port: 8080"))
+        .stdout(predicate::str::contains(
+            "database_url: \"postgres://localhost:5432/mydb\"",
+        ));
+
+    Ok(())
+}
+
+#[test]
+fn cli_override_port() -> Result<(), Box<dyn std::error::Error>> {
+    let dir = TempDir::new()?;
+    std::fs::write(
+        dir.path().join("app-config.yaml"),
+        "port: 8080\ndatabase_url: \"postgres://localhost:5432/mydb\"",
+    )?;
+
+    Command::cargo_bin("basic")?
+        .current_dir(dir.path())
+        .arg("--port")
+        .arg("9090")
+        .assert()
+        .success()
+        .stdout(predicate::str::contains("port: 9090"))
+        .stdout(predicate::str::contains(
+            "database_url: \"postgres://localhost:5432/mydb\"",
+        ));
+
+    Ok(())
+}
+
+#[test]
+fn no_config_uses_defaults() -> Result<(), Box<dyn std::error::Error>> {
+    Command::cargo_bin("basic")?
+        .arg("--no-config")
+        .assert()
+        .success()
+        .stdout(predicate::str::contains("port: 8080"))
+        .stdout(predicate::str::contains("database_url: \"\"")); // Default String is empty
+
+    Ok(())
+}