diff --git a/src/tests/expand.rs b/src/tests/expand.rs
index 8fac6c245..2488d2bf0 100644
--- a/src/tests/expand.rs
+++ b/src/tests/expand.rs
@@ -6,7 +6,6 @@ use crate::env::{EnvMode, EnvStackSetResult};
 use crate::expand::{expand_to_receiver, ExpandResultCode};
 use crate::operation_context::{no_cancel, EXPANSION_LIMIT_DEFAULT};
 use crate::parse_constants::ParseErrorList;
-use crate::parser::Parser;
 use crate::tests::prelude::*;
 use crate::wildcard::ANY_STRING;
 use crate::{
@@ -23,14 +22,11 @@ fn expand_test_impl(
     expected: Vec<WString>,
     error_message: Option<&str>,
 ) {
+    let parser = TestParser::new();
     let mut output = CompletionList::new();
     let mut errors = ParseErrorList::new();
     let pwd = PwdEnvironment::default();
-    let ctx = OperationContext::test_only_foreground(
-        Parser::principal_parser(),
-        &pwd,
-        Box::new(no_cancel),
-    );
+    let ctx = OperationContext::test_only_foreground(&parser, &pwd, Box::new(no_cancel));
 
     if expand_string(
         input.to_owned(),
diff --git a/src/tests/parser.rs b/src/tests/parser.rs
index a838d8011..16450baec 100644
--- a/src/tests/parser.rs
+++ b/src/tests/parser.rs
@@ -610,9 +610,8 @@ fn test_new_parser_errors() {
 #[serial]
 fn test_eval_recursion_detection() {
     let _cleanup = test_init();
-    // Ensure that we don't crash on infinite self recursion and mutual recursion. These must use
-    // the principal parser because we cannot yet execute jobs on other parsers.
-    let parser = Parser::principal_parser();
+    // Ensure that we don't crash on infinite self recursion and mutual recursion.
+    let parser = TestParser::new();
     parser.eval(
         L!("function recursive ; recursive ; end ; recursive; "),
         &IoChain::new(),
@@ -663,7 +662,7 @@ fn test_eval_illegal_exit_code() {
 #[serial]
 fn test_eval_empty_function_name() {
     let _cleanup = test_init();
-    let parser = Parser::principal_parser();
+    let parser = TestParser::new();
     parser.eval(
         L!("function '' ; echo fail; exit 42 ; end ; ''"),
         &IoChain::new(),
@@ -674,7 +673,7 @@ fn test_eval_empty_function_name() {
 #[serial]
 fn test_expand_argument_list() {
     let _cleanup = test_init();
-    let parser = Parser::principal_parser();
+    let parser = TestParser::new();
     let comps: Vec<WString> = Parser::expand_argument_list(
         L!("alpha 'beta gamma' delta"),
         ExpandFlags::default(),
diff --git a/src/tests/termsize.rs b/src/tests/termsize.rs
index 42e2d64fb..d7874200d 100644
--- a/src/tests/termsize.rs
+++ b/src/tests/termsize.rs
@@ -1,5 +1,4 @@
 use crate::env::{EnvMode, Environment};
-use crate::parser::Parser;
 use crate::termsize::*;
 use crate::tests::prelude::*;
 use crate::wchar::prelude::*;
@@ -11,7 +10,7 @@ use std::sync::Mutex;
 fn test_termsize() {
     let _cleanup = test_init();
     let env_global = EnvMode::GLOBAL;
-    let parser = Parser::principal_parser();
+    let parser = TestParser::new();
     let vars = parser.vars();
 
     // Use a static variable so we can pretend we're the kernel exposing a terminal size.
@@ -40,7 +39,7 @@ fn test_termsize() {
     assert_eq!(ts.last(), Termsize::defaults());
 
     // Ok now we tell it to update.
-    ts.updating(parser);
+    ts.updating(&parser);
     assert_eq!(ts.last(), Termsize::new(42, 84));
     assert_eq!(vars.get(L!("COLUMNS")).unwrap().as_string(), "42");
     assert_eq!(vars.get(L!("LINES")).unwrap().as_string(), "84");
@@ -61,7 +60,7 @@ fn test_termsize() {
     // Oh it got SIGWINCH, now the tty matters again.
     TermsizeContainer::handle_winch();
     assert_eq!(ts.last(), Termsize::new(33, 150));
-    assert_eq!(ts.updating(parser), stubby_termsize().unwrap());
+    assert_eq!(ts.updating(&parser), stubby_termsize().unwrap());
     assert_eq!(vars.get(L!("COLUMNS")).unwrap().as_string(), "42");
     assert_eq!(vars.get(L!("LINES")).unwrap().as_string(), "84");
 
@@ -78,8 +77,8 @@ fn test_termsize() {
         tty_size_reader: stubby_termsize,
     };
     ts.initialize(parser.vars());
-    ts2.updating(parser);
+    ts2.updating(&parser);
     assert_eq!(ts.last(), Termsize::new(83, 38));
     TermsizeContainer::handle_winch();
-    assert_eq!(ts2.updating(parser), stubby_termsize().unwrap());
+    assert_eq!(ts2.updating(&parser), stubby_termsize().unwrap());
 }