test: Remove empty snapshots for UI tests

Author: epage

tests/testsuite/cargo_add/add_basic/mod.rs

@@ -2,6 +2,7 @@ use cargo_test_support::compare::assert_ui;
 use cargo_test_support::current_dir;
 use cargo_test_support::file;
 use cargo_test_support::prelude::*;
+use cargo_test_support::str;
 use cargo_test_support::Project;
 
 #[cargo_test]
@@ -29,7 +30,7 @@ fn case() {
         .current_dir(cwd)
         .assert()
         .success()
-        .stdout_matches(file!["stdout.log"])
+        .stdout_matches(str![""])
         .stderr_matches(file!["stderr.log"]);
 
     assert_ui().subset_matches(current_dir!().join("out"), &project_root);

tests/testsuite/cargo_add/add_basic/stdout.log

@@ -2,6 +2,7 @@ use cargo_test_support::compare::assert_ui;
 use cargo_test_support::current_dir;
 use cargo_test_support::file;
 use cargo_test_support::prelude::*;
+use cargo_test_support::str;
 use cargo_test_support::Project;
 
 #[cargo_test]
@@ -31,7 +32,7 @@ fn case() {
         .current_dir(cwd)
         .assert()
         .success()
-        .stdout_matches(file!["stdout.log"])
+        .stdout_matches(str![""])
         .stderr_matches(file!["stderr.log"]);
 
     assert_ui().subset_matches(current_dir!().join("out"), &project_root);

tests/testsuite/cargo_add/add_multiple/mod.rs

@@ -2,6 +2,7 @@ use cargo_test_support::compare::assert_ui;
 use cargo_test_support::current_dir;
 use cargo_test_support::file;
 use cargo_test_support::prelude::*;
+use cargo_test_support::str;
 use cargo_test_support::Project;
 
 #[cargo_test]
@@ -34,7 +35,7 @@ fn case() {
         .current_dir(cwd)
         .assert()
         .success()
-        .stdout_matches(file!["stdout.log"])
+        .stdout_matches(str![""])
         .stderr_matches(file!["stderr.log"]);
 
     assert_ui().subset_matches(current_dir!().join("out"), &project_root);

tests/testsuite/cargo_add/add_multiple/stdout.log

@@ -2,6 +2,7 @@ use cargo_test_support::compare::assert_ui;
 use cargo_test_support::current_dir;
 use cargo_test_support::file;
 use cargo_test_support::prelude::*;
+use cargo_test_support::str;
 use cargo_test_support::Project;
 
 #[cargo_test]
@@ -16,7 +17,7 @@ fn case() {
         .current_dir(cwd)
         .assert()
         .failure()
-        .stdout_matches(file!["stdout.log"])
+        .stdout_matches(str![""])
         .stderr_matches(file!["stderr.log"]);
 
     assert_ui().subset_matches(current_dir!().join("out"), &project_root);

tests/testsuite/cargo_add/add_normalized_name_external/mod.rs

@@ -2,6 +2,7 @@ use cargo_test_support::compare::assert_ui;
 use cargo_test_support::current_dir;
 use cargo_test_support::file;
 use cargo_test_support::prelude::*;
+use cargo_test_support::str;
 use cargo_test_support::Project;
 
 #[cargo_test]
@@ -31,7 +32,7 @@ fn case() {
         .current_dir(cwd)
         .assert()
         .success()
-        .stdout_matches(file!["stdout.log"])
+        .stdout_matches(str![""])
         .stderr_matches(file!["stderr.log"]);
 
     assert_ui().subset_matches(current_dir!().join("out"), &project_root);