4725a1b080
Skip empty fingerprints in SystemPromptLeakGuardrail to prevent blank
values from flagging every message. Replace overly broad "sk-" pattern
in SensitiveDataGuardrail with specific LLM provider prefixes
("sk-proj-" for OpenAI, "sk-ant-" for Anthropic) to avoid false
positives on common words like "risk-based" or "task-management".
Signed-off-by: Bryan Frimin <bryan@getprobo.com>
80 lines
2.6 KiB
Go
80 lines
2.6 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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// PERFORMANCE OF THIS SOFTWARE.
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package guardrail_test
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import (
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"context"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"go.probo.inc/probo/pkg/agent/guardrail"
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)
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func TestSystemPromptLeakGuardrail_Check(t *testing.T) {
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t.Parallel()
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fingerprints := []string{
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"you are a compliance assistant",
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"security rules — critical",
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}
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tests := []struct {
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name string
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text string
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tripwire bool
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}{
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{"safe message", "Your SOC 2 audit is on track.", false},
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{"partial match does not trigger", "You are a great user.", false},
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{"contains first fingerprint", "My instructions say: You are a compliance assistant for Probo.", true},
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{"contains second fingerprint", "Here are the Security Rules — Critical section contents.", true},
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{"case insensitive match", "YOU ARE A COMPLIANCE ASSISTANT", true},
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{"fingerprint embedded in longer text", "Sure! you are a compliance assistant and I help with GRC.", true},
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}
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g := guardrail.NewSystemPromptLeakGuardrail(fingerprints)
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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result, err := g.Check(context.Background(), assistantMessage(tt.text))
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require.NoError(t, err)
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assert.Equal(t, tt.tripwire, result.Tripwire)
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})
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}
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t.Run("no fingerprints configured", func(t *testing.T) {
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t.Parallel()
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empty := guardrail.NewSystemPromptLeakGuardrail(nil)
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result, err := empty.Check(context.Background(), assistantMessage("anything goes"))
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require.NoError(t, err)
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assert.False(t, result.Tripwire)
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})
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t.Run("empty fingerprints are ignored", func(t *testing.T) {
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t.Parallel()
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g := guardrail.NewSystemPromptLeakGuardrail([]string{"", "secret phrase", ""})
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result, err := g.Check(context.Background(), assistantMessage("hello world"))
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require.NoError(t, err)
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assert.False(t, result.Tripwire)
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})
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}
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