feat: add a test for dry_run option

src/lib.rs

@@ -475,7 +475,7 @@ impl CocoGitto {
         };
 
         if dry_run {
-            println!("{}", version_str);
+            print!("{}", version_str);
             return Ok(());
         }
 

tests/cog_tests/bump.rs

@@ -49,6 +49,30 @@ fn auto_bump_minor_from_latest_tag() -> Result<()> {
     Ok(())
 }
 
+#[sealed_test]
+fn auto_bump_dry_run_from_latest_tag() -> Result<()> {
+    git_init()?;
+    git_commit("chore: init")?;
+    git_commit("feat(taef): feature")?;
+    git_commit("fix: bug fix")?;
+    git_tag("1.0.0")?;
+    git_commit("feat(taef): feature")?;
+    git_commit("feat: feature 1")?;
+    git_commit("feat: feature 2")?;
+
+    Command::cargo_bin("cog")?
+        .arg("bump")
+        .arg("--auto")
+        .arg("--dry-run")
+        .assert()
+        .success()
+        .stdout("1.1.0");
+
+    assert_that!(Path::new("CHANGELOG.md")).does_not_exist();
+    assert_tag_does_not_exist("1.1.0")?;
+    Ok(())
+}
+
 #[sealed_test]
 fn auto_bump_major_from_latest_tag() -> Result<()> {
     git_init()?;

tests/helpers.rs

@@ -81,6 +81,13 @@ pub fn assert_tag_exists(tag: &str) -> Result<()> {
     Ok(())
 }
 
+pub fn assert_tag_does_not_exist(tag: &str) -> Result<()> {
+    let tags = run_fun!(git --no-pager tag)?;
+    let tags: Vec<&str> = tags.split('\n').collect();
+    assert_that!(tags).does_not_contain(&tag);
+    Ok(())
+}
+
 pub fn assert_latest_tag(tag: &str) -> Result<()> {
     let tags = run_fun!(git --no-pager tag)?;
     let tags: Vec<&str> = tags.split('\n').collect();