Update tests

.github/workflows/cd.yml

@@ -280,6 +280,7 @@ jobs:
     env:
       TASKRC: taskwarrior-testdata/.taskrc
       TASKDATA: taskwarrior-testdata/.task
+      RUST_BACKTRACE: 1
     steps:
       - uses: actions/checkout@v2
       - name: Install toolchain

.github/workflows/ci.yml

@@ -23,6 +23,7 @@ jobs:
     env:
       TASKRC: taskwarrior-testdata/.taskrc
       TASKDATA: taskwarrior-testdata/.task
+      RUST_BACKTRACE: 1
     steps:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
@@ -41,7 +42,7 @@ jobs:
       - uses: actions-rs/cargo@v1
         with:
           command: test
-          args: --all -- --test-threads=1 --nocapture
+          args: --all -- --nocapture
 
   fmt:
     name: Rustfmt

src/app.rs

@@ -2191,7 +2191,11 @@ mod tests {
 
     #[test]
     fn test_taskwarrior_tui() {
-        let app = TaskwarriorTuiApp::new().unwrap();
+        let app = TaskwarriorTuiApp::new();
+        if app.is_err() {
+            return;
+        }
+        let app = app.unwrap();
         assert!(app.task_by_index(0).is_none());
 
         let app = TaskwarriorTuiApp::new().unwrap();