shouldBecomeEqual() behaves as shouldBe() if the testing expression returns the expected value

LayoutTests/editing/spelling/editing-multiple-words-with-markers-expected.txt

Index: LayoutTests/editing/spelling/editing-multiple-words-with-markers-expected.txt
diff --git a/LayoutTests/editing/spelling/editing-multiple-words-with-markers-expected.txt b/LayoutTests/editing/spelling/editing-multiple-words-with-markers-expected.txt
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+++ b/LayoutTests/editing/spelling/editing-multiple-words-with-markers-expected.txt
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+The test verifies if the spelling markers disappear when the multiple misspelled words are concatenated by delete command. To test manually, type "it's a meagesga meagesga ", then select and delete "esga meag". The test succeeds if the remaining text does not have any underline.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+it's a meagesga meagesga 
+PASS internals.hasSpellingMarker(document, marker1[0], marker1[1]) became false
+PASS internals.hasSpellingMarker(document, marker2[0], marker2[1]) became true
+
+it's a meagesga 
+FAIL internals.hasSpellingMarker(document, marker1[0], marker1[1]) became false
+FAIL internals.hasSpellingMarker(document, marker2[0], marker2[1]) became false
+
+it's a meagmeagesga 
+FAIL internals.hasSpellingMarker(document, marker1[0], marker1[1]) became false
+PASS internals.hasSpellingMarker(document, marker2[0], marker2[1]) became false
+
+it's a meagesgaesga 
+FAIL internals.hasSpellingMarker(document, marker1[0], marker1[1]) became false
+PASS internals.hasSpellingMarker(document, marker2[0], marker2[1]) became false
+
+PASS successfullyParsed is true
+
+TEST COMPLETE
+