Refs #13872 Fix LoadSQWTest

Framework/MDAlgorithms/test/LoadSQWTest.h

@@ -159,9 +159,10 @@ public:
     TS_ASSERT_EQUALS("en", d->getDimensionId());
 
     // Check Units
-    TS_ASSERT_EQUALS("A^-1", a->getUnits().ascii());
-    TS_ASSERT_EQUALS("A^-1", b->getUnits().ascii());
-    TS_ASSERT_EQUALS("A^-1", c->getUnits().ascii());
+    auto expectedUnit = Mantid::Kernel::InverseAngstromsUnit().getUnitLabel().ascii();
+    TS_ASSERT_EQUALS(expectedUnit , a->getUnits().ascii());
+    TS_ASSERT_EQUALS(expectedUnit , b->getUnits().ascii());
+    TS_ASSERT_EQUALS(expectedUnit , c->getUnits().ascii());
     TS_ASSERT_EQUALS("meV", d->getUnits().ascii());
 
     // Check Nbins