Add boolean literals diagnostic spec tests

compiler/tests-spec/testData/diagnostics/linked/constant-literals/boolean-literals/p-1/neg/3.1.kt

@@ -0,0 +1,24 @@
+// !CHECK_TYPE
+
+/*
+ * KOTLIN DIAGNOSTICS SPEC TEST (NEGATIVE)
+ *
+ * SECTIONS: constant-literals, boolean-literals
+ * PARAGRAPH: 1
+ * SENTENCE: [3] These are strong keywords which cannot be used as identifiers unless [escaped][Escaped identifiers].
+ * NUMBER: 1
+ * DESCRIPTION: The use of Boolean literals as the identifier (with backtick) in the class.
+ * NOTE: this test data is generated by FeatureInteractionTestDataGenerator. DO NOT MODIFY CODE MANUALLY
+ */
+
+// TESTCASE NUMBER: 1
+fun case_1() {
+    true checkType { <!TYPE_MISMATCH!>_<!><Boolean?>() }
+    false checkType { <!TYPE_MISMATCH!>_<!><Boolean?>() }
+
+    true checkType { <!TYPE_MISMATCH!>_<!><Any?>() }
+    false checkType { <!TYPE_MISMATCH!>_<!><Any>() }
+
+    true checkType { <!TYPE_MISMATCH!>_<!><Nothing?>() }
+    false checkType { <!TYPE_MISMATCH!>_<!><Nothing>() }
+}

compiler/tests-spec/testData/diagnostics/linked/constant-literals/boolean-literals/p-1/neg/3.1.txt

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+package
+
+public fun case_1(): kotlin.Unit

compiler/tests-spec/testData/diagnostics/linked/constant-literals/boolean-literals/p-1/pos/3.1.kt

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+// !CHECK_TYPE
+
+/*
+ * KOTLIN DIAGNOSTICS SPEC TEST (POSITIVE)
+ *
+ * SECTIONS: constant-literals, boolean-literals
+ * PARAGRAPH: 1
+ * SENTENCE: [3] These are strong keywords which cannot be used as identifiers unless [escaped][Escaped identifiers].
+ * NUMBER: 1
+ * DESCRIPTION: The use of Boolean literals as the identifier (with backtick) in the class.
+ * NOTE: this test data is generated by FeatureInteractionTestDataGenerator. DO NOT MODIFY CODE MANUALLY
+ */
+
+// TESTCASE NUMBER: 1
+fun case_1() {
+    true checkType { _<Boolean>() }
+    false checkType { _<Boolean>() }
+
+    checkSubtype<Boolean>(true)
+    checkSubtype<Boolean>(false)
+}

compiler/tests-spec/testData/diagnostics/linked/constant-literals/boolean-literals/p-1/pos/3.1.txt

@@ -0,0 +1,3 @@
+package
+
+public fun case_1(): kotlin.Unit

compiler/tests-spec/testData/diagnostics/linked/constant-literals/boolean-literals/p-1/pos/3.2.kt

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+// !CHECK_TYPE
+
+/*
+ * KOTLIN DIAGNOSTICS SPEC TEST (POSITIVE)
+ *
+ * SECTIONS: constant-literals, boolean-literals
+ * PARAGRAPH: 1
+ * SENTENCE: [3] These are strong keywords which cannot be used as identifiers unless [escaped][Escaped identifiers].
+ * NUMBER: 2
+ * DESCRIPTION: The use of Boolean literals as the identifier (with backtick) in the class.
+ * NOTE: this test data is generated by FeatureInteractionTestDataGenerator. DO NOT MODIFY CODE MANUALLY
+ */
+
+// TESTCASE NUMBER: 1
+fun case_1() {
+    checkSubtype<Boolean?>(true)
+    checkSubtype<Boolean?>(false)
+
+    checkSubtype<Any>(true)
+    checkSubtype<Any>(false)
+}

compiler/tests-spec/testData/diagnostics/linked/constant-literals/boolean-literals/p-1/pos/3.2.txt

@@ -0,0 +1,3 @@
+package
+
+public fun case_1(): kotlin.Unit