diff --git a/tests/ui/src/imag_grep.rs b/tests/ui/src/imag_grep.rs
index 987eadc5..9eac75a7 100644
--- a/tests/ui/src/imag_grep.rs
+++ b/tests/ui/src/imag_grep.rs
@@ -17,3 +17,103 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 //
 
+use std::process::Command;
+use std::io::Write;
+
+use assert_fs::fixture::TempDir;
+
+pub fn call(tempdir: &TempDir, pattern: &str) -> Vec<String> {
+    let mut binary = binary(tempdir);
+    binary.arg("--ignore-ids");
+    binary.arg(pattern);
+
+    // ensure that stdin is not used by the child process
+    binary.stdin(std::process::Stdio::inherit());
+    crate::imag::stdout_of_command(binary)
+}
+
+pub fn binary(tempdir: &TempDir) -> Command {
+    crate::imag::binary(tempdir, "imag-grep")
+}
+
+#[test]
+fn test_grepping_in_empty_store() {
+    crate::setup_logging();
+    let imag_home = crate::imag::make_temphome();
+    crate::imag_init::call(&imag_home);
+
+    let output = call(&imag_home, "something");
+    assert_eq!(output[0], "Processed 0 files, 0 matches, 0 nonmatches");
+    assert_eq!(output.len(), 1);
+}
+
+#[test]
+fn test_grepping_nonempty_store() {
+    crate::setup_logging();
+    let imag_home = crate::imag::make_temphome();
+    crate::imag_init::call(&imag_home);
+    crate::imag_create::call(&imag_home, &["something"]);
+
+    let output = call(&imag_home, "something");
+    assert_eq!(output[0], "Processed 1 files, 0 matches, 1 nonmatches");
+    assert_eq!(output.len(), 1);
+}
+
+#[test]
+fn test_grepping_not_available_string() {
+    crate::setup_logging();
+    let imag_home = crate::imag::make_temphome();
+    crate::imag_init::call(&imag_home);
+
+    let filename = &["something"];
+    crate::imag_create::call(&imag_home, filename);
+    let filepath = crate::imag::store_path(&imag_home, filename);
+
+    {
+        debug!("Appending to file = {}", filepath.display());
+        let mut file = ::std::fs::OpenOptions::new()
+            .append(true)
+            .create(false)
+            .open(&filepath)
+            .unwrap();
+
+        let _ = writeln!(file, "unavailable").unwrap();
+    }
+
+    let output = call(&imag_home, "something");
+    assert_eq!(output[0], "Processed 1 files, 0 matches, 1 nonmatches");
+    assert_eq!(output.len(), 1);
+}
+
+#[test]
+fn test_grepping_available_string() {
+    crate::setup_logging();
+    let imag_home = crate::imag::make_temphome();
+    crate::imag_init::call(&imag_home);
+
+    let filename = &["something"];
+    crate::imag_create::call(&imag_home, filename);
+    let filepath = crate::imag::store_path(&imag_home, filename);
+
+    let filetext = "some text is here";
+    {
+        debug!("Appending to file = {}", filepath.display());
+        let mut file = ::std::fs::OpenOptions::new()
+            .append(true)
+            .create(false)
+            .open(&filepath)
+            .unwrap();
+
+        let _ = writeln!(file, "{}", filetext).unwrap();
+    }
+
+    let output = call(&imag_home, filetext);
+    debug!("output = {:?}", output);
+    assert!(!output.is_empty());
+    assert_eq!(output[0], format!("{}:", filename[0]));
+    assert_eq!(output[1], format!(" '{}'", filetext));
+    assert_eq!(output[2], "");
+    assert_eq!(output[3], "Processed 1 files, 1 matches, 0 nonmatches");
+    assert_eq!(output.len(), 4);
+}
+