should be it

external/duckdb/tools/shell/tests/test_highlighting.py

@@ -0,0 +1,49 @@
+# fmt: off
+
+import pytest
+import subprocess
+import sys
+from typing import List
+from conftest import ShellTest
+import os
+
+lineitem_ddl = 'CREATE TABLE lineitem(l_orderkey BIGINT NOT NULL, l_partkey BIGINT NOT NULL, l_suppkey BIGINT NOT NULL, l_linenumber BIGINT NOT NULL, l_quantity DECIMAL(15,2) NOT NULL, l_extendedprice DECIMAL(15,2) NOT NULL, l_discount DECIMAL(15,2) NOT NULL, l_tax DECIMAL(15,2) NOT NULL, l_returnflag VARCHAR NOT NULL, l_linestatus VARCHAR NOT NULL, l_shipdate DATE NOT NULL, l_commitdate DATE NOT NULL, l_receiptdate DATE NOT NULL, l_shipinstruct VARCHAR NOT NULL, l_shipmode VARCHAR NOT NULL, l_comment VARCHAR NOT NULL);'
+
+@pytest.mark.skipif(os.name == 'nt', reason="Windows highlighting does not use shell escapes")
+def test_highlight_column_header(shell):
+    test = (
+        ShellTest(shell)
+        .statement(".highlight_results on")
+        .statement('select NULL AS r;')
+    )
+    result = test.run()
+    result.check_stdout('\x1b[90mNULL\x1b[0m')
+@pytest.mark.skipif(os.name == 'nt', reason="Windows highlighting does not use shell escapes")
+def test_custom_highlight(shell):
+    test = (
+        ShellTest(shell)
+        .statement(".highlight_results on")
+        .statement(".highlight_colors column_name red bold")
+        .statement(".highlight_colors column_type yellow")
+        .statement(lineitem_ddl)
+        .statement('select * from lineitem;')
+    )
+    result = test.run()
+    result.check_stdout('\x1b[1m\x1b[31ml_comment\x1b[0m')
+    result.check_stdout('\x1b[33mvarchar\x1b[0m')
+
+def test_custom_highlight_error(shell):
+    test = (
+        ShellTest(shell)
+        .statement(".highlight_colors column_nameXX red")
+        .statement(".highlight_colors column_name redXX")
+        .statement(".highlight_colors column_name red boldXX")
+        .statement(".highlight_colors column_name red bold zz")
+    )
+    result = test.run()
+    result.check_stderr("Unknown element 'column_nameXX'")
+    result.check_stderr("Unknown color 'redXX'")
+    result.check_stderr("Unknown intensity 'boldXX'")
+    result.check_stderr("Usage: .highlight_colors")
+
+# fmt: on