bkietz commented on a change in pull request #8894:
URL: https://github.com/apache/arrow/pull/8894#discussion_r545382579



##########
File path: cpp/src/arrow/dataset/scanner_test.cc
##########
@@ -184,14 +183,26 @@ TEST_F(TestScannerBuilder, TestProject) {
 TEST_F(TestScannerBuilder, TestFilter) {
   ScannerBuilder builder(dataset_, ctx_);
 
-  ASSERT_OK(builder.Filter(scalar(true)));
-  ASSERT_OK(builder.Filter("i64"_ == int64_t(10)));
-  ASSERT_OK(builder.Filter("i64"_ == int64_t(10) || "b"_ == true));
-
-  ASSERT_RAISES(TypeError, builder.Filter("i64"_ == int32_t(10)));
-  ASSERT_RAISES(Invalid, builder.Filter("not_a_column"_ == true));
-  ASSERT_RAISES(Invalid,
-                builder.Filter("i64"_ == int64_t(10) || "not_a_column"_ == 
true));
+  ASSERT_OK(builder.Filter(literal(true)));
+  ASSERT_OK(builder.Filter(call("equal", {field_ref("i64"), 
literal<int64_t>(10)})));

Review comment:
       yes, I'll replace with a call to `equal`

##########
File path: cpp/src/arrow/dataset/scanner_test.cc
##########
@@ -184,14 +183,26 @@ TEST_F(TestScannerBuilder, TestProject) {
 TEST_F(TestScannerBuilder, TestFilter) {
   ScannerBuilder builder(dataset_, ctx_);
 
-  ASSERT_OK(builder.Filter(scalar(true)));
-  ASSERT_OK(builder.Filter("i64"_ == int64_t(10)));
-  ASSERT_OK(builder.Filter("i64"_ == int64_t(10) || "b"_ == true));
-
-  ASSERT_RAISES(TypeError, builder.Filter("i64"_ == int32_t(10)));
-  ASSERT_RAISES(Invalid, builder.Filter("not_a_column"_ == true));
-  ASSERT_RAISES(Invalid,
-                builder.Filter("i64"_ == int64_t(10) || "not_a_column"_ == 
true));
+  ASSERT_OK(builder.Filter(literal(true)));
+  ASSERT_OK(builder.Filter(call("equal", {field_ref("i64"), 
literal<int64_t>(10)})));
+  ASSERT_OK(builder.Filter(
+      call("or_kleene", {

Review comment:
       same




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