diff --git a/crates/eps/src/import/tests.rs b/crates/eps/src/import/tests.rs
index 7a503a905..d74446f2b 100644
--- a/crates/eps/src/import/tests.rs
+++ b/crates/eps/src/import/tests.rs
@@ -19,6 +19,96 @@ pub(super) fn read(body: &str) -> crate::Imported {
     import(&eps(body)).unwrap()
 }
 
+#[test]
+fn postscript_srand_non_integer_operand_is_refused() {
+    let err = import(&eps("1.5 srand")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("srand"));
+}
+
+#[test]
+fn postscript_roll_non_integer_count_is_refused() {
+    let err = import(&eps("1.5 1 roll")).unwrap_err();
+    assert!(err.contains("typecheck"));
+}
+
+#[test]
+fn postscript_roll_non_integer_displacement_is_refused() {
+    let err = import(&eps("1 1.5 roll")).unwrap_err();
+    assert!(err.contains("typecheck"));
+}
+
+#[test]
+fn postscript_repeat_non_procedure_operand_is_refused() {
+    let err = import(&eps("1 1 repeat")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("repeat"));
+}
+
+#[test]
+fn postscript_repeat_non_integer_count_is_refused() {
+    let err = import(&eps("1.5 { pop } repeat")).unwrap_err();
+    assert!(err.contains("typecheck"));
+}
+
+#[test]
+fn postscript_mod_non_integer_operand_is_refused() {
+    let err = import(&eps("1.5 2 mod")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("mod"));
+}
+
+#[test]
+fn postscript_loop_non_procedure_operand_is_refused() {
+    let err = import(&eps("1 loop")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("loop"));
+}
+
+#[test]
+fn postscript_index_non_integer_count_is_refused() {
+    let err = import(&eps("1 1.5 index pop")).unwrap_err();
+    assert!(err.contains("typecheck"));
+}
+
+#[test]
+fn postscript_ifelse_non_procedure_branch_is_refused() {
+    let err = import(&eps("true { pop } 1 ifelse")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("ifelse"));
+}
+
+#[test]
+fn postscript_ifelse_non_boolean_condition_is_refused() {
+    let err = import(&eps("1 { pop } { pop } ifelse")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("ifelse"));
+}
+
+#[test]
+fn postscript_if_non_procedure_body_is_refused() {
+    let err = import(&eps("true 1 if")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("if"));
+}
+
+#[test]
+fn postscript_if_non_boolean_condition_is_refused() {
+    let err = import(&eps("1 { pop } if")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("if"));
+}
+
+#[test]
+fn postscript_idiv_non_integer_operand_is_refused() {
+    let err = import(&eps("1.5 2 idiv")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("idiv"));
+}
+
+#[test]
+fn postscript_for_non_procedure_operand_is_refused() {
+    let err = import(&eps("1 1 10 1 for")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("for"));
+}
+
+#[test]
+fn postscript_copy_non_integer_operand_count_is_refused() {
+    let err = import(&eps("1 1.5 copy pop")).unwrap_err();
+    assert!(err.contains("typecheck") && err.contains("copy"));
+}
+
 /// #1714: arrays and dictionaries a program links into themselves or each other are freed with
 /// the interpreter, also the ones it no longer reaches and when it stops on an error.
 #[test]