No printing executable names when running tests with json message format

Author: danilhendrasr

src/cargo/ops/cargo_test.rs

@@ -22,7 +22,10 @@ pub fn run_tests(
     let compilation = compile_tests(ws, options)?;
 
     if options.no_run {
-        display_no_run_information(ws, test_args, &compilation, "unittests")?;
+        if !options.compile_opts.build_config.emit_json() {
+            display_no_run_information(ws, test_args, &compilation, "unittests")?;
+        }
+
         return Ok(None);
     }
     let (test, mut errors) = run_unit_tests(ws.config(), options, test_args, &compilation)?;

tests/testsuite/test.rs

@@ -1352,6 +1352,22 @@ fn test_no_run() {
         .run();
 }
 
+#[cargo_test]
+fn test_no_run_emit_json() {
+    let p = project()
+        .file("src/lib.rs", "#[test] fn foo() { panic!() }")
+        .build();
+
+    p.cargo("test --no-run --message-format json")
+        .with_stderr(
+            "\
+[COMPILING] foo v0.0.1 ([CWD])
+[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
+",
+        )
+        .run();
+}
+
 #[cargo_test]
 fn test_run_specific_bin_target() {
     let prj = project()