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import { LEGACY_AGENTIC_REGEX } from '$lib/constants/agentic';
/**
* Tests for legacy marker stripping (used in migration).
* The new system does not embed markers in content - these tests verify
* the legacy regex patterns still work for the migration code.
*/
// Mirror the legacy stripping logic used during migration
function stripLegacyContextMarkers(content: string): string {
return content
.replace(new RegExp(LEGACY_AGENTIC_REGEX.REASONING_BLOCK.source, 'g'), '')
.replace(LEGACY_AGENTIC_REGEX.REASONING_OPEN, '')
.replace(new RegExp(LEGACY_AGENTIC_REGEX.AGENTIC_TOOL_CALL_BLOCK.source, 'g'), '')
.replace(LEGACY_AGENTIC_REGEX.AGENTIC_TOOL_CALL_OPEN, '');
}
// A realistic complete tool call block as stored in old message.content
const COMPLETE_BLOCK =
'\n\n<<<AGENTIC_TOOL_CALL_START>>>\n' +
'<<<TOOL_NAME:bash_tool>>>\n' +
'<<<TOOL_ARGS_START>>>\n' +
'{"command":"ls /tmp","description":"list tmp"}\n' +
'<<<TOOL_ARGS_END>>>\n' +
'file1.txt\nfile2.txt\n' +
'<<<AGENTIC_TOOL_CALL_END>>>\n';
// Partial block: streaming was cut before END arrived.
const OPEN_BLOCK =
'\n\n<<<AGENTIC_TOOL_CALL_START>>>\n' +
'<<<TOOL_NAME:bash_tool>>>\n' +
'<<<TOOL_ARGS_START>>>\n' +
'{"command":"ls /tmp","description":"list tmp"}\n' +
'<<<TOOL_ARGS_END>>>\n' +
'partial output...';
describe('legacy agentic marker stripping (for migration)', () => {
it('strips a complete tool call block, leaving surrounding text', () => {
const input = 'Before.' + COMPLETE_BLOCK + 'After.';
const result = stripLegacyContextMarkers(input);
expect(result).not.toContain('<<<');
expect(result).toContain('Before.');
expect(result).toContain('After.');
});
it('strips multiple complete tool call blocks', () => {
const input = 'A' + COMPLETE_BLOCK + 'B' + COMPLETE_BLOCK + 'C';
const result = stripLegacyContextMarkers(input);
expect(result).not.toContain('<<<');
expect(result).toContain('A');
expect(result).toContain('B');
expect(result).toContain('C');
});
it('strips an open/partial tool call block (no END marker)', () => {
const input = 'Lead text.' + OPEN_BLOCK;
const result = stripLegacyContextMarkers(input);
expect(result).toBe('Lead text.');
expect(result).not.toContain('<<<');
});
it('does not alter content with no markers', () => {
const input = 'Just a normal assistant response.';
expect(stripLegacyContextMarkers(input)).toBe(input);
});
it('strips reasoning block independently', () => {
const input = '<<<reasoning_content_start>>>think hard<<<reasoning_content_end>>>Answer.';
expect(stripLegacyContextMarkers(input)).toBe('Answer.');
});
it('strips both reasoning and agentic blocks together', () => {
const input =
'<<<reasoning_content_start>>>plan<<<reasoning_content_end>>>' +
'Some text.' +
COMPLETE_BLOCK;
expect(stripLegacyContextMarkers(input)).not.toContain('<<<');
expect(stripLegacyContextMarkers(input)).toContain('Some text.');
});
it('empty string survives', () => {
expect(stripLegacyContextMarkers('')).toBe('');
});
it('detects legacy markers', () => {
expect(LEGACY_AGENTIC_REGEX.HAS_LEGACY_MARKERS.test('normal text')).toBe(false);
expect(
LEGACY_AGENTIC_REGEX.HAS_LEGACY_MARKERS.test('text<<<AGENTIC_TOOL_CALL_START>>>more')
).toBe(true);
expect(LEGACY_AGENTIC_REGEX.HAS_LEGACY_MARKERS.test('<<<reasoning_content_start>>>think')).toBe(
true
);
});
});
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