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package pgedgecli

import "testing"

// TestIndexStaysUnderBudget is what keeps the index's size honest.

// The design comment on internal/cli.NewLLMSCmd used to state the

// figure directly, and it drifted from 16 KB to 35 KB with nothing

// measuring it — while that size is the entire reason the index

// exists rather than a monolith. A number in a comment cannot

// hold a budget; this can.

// The failure message names the remedy in both directions, because

// both are legitimate: trim the index, or raise the budget on purpose.

func TestIndexStaysUnderBudget(t *testing.T) {

got := len(LLMS)

if got == 0 {

t.Fatal("the embedded index is empty; this test has lost its " +

"subject and would pass against anything")

}

if got > IndexSizeBudget {

t.Errorf("llms.txt is %d bytes, over the %d-byte budget by "+

"%d. Either trim the index — it is the FIRST read every "+

"agent makes, and it exists so that looking up one flag "+

"does not cost every module's whole reference — or raise "+

"IndexSizeBudget deliberately, in a commit that says why.",

got, IndexSizeBudget, got-IndexSizeBudget)

} else if got > IndexSizeBudget*9/10 {

t.Logf("llms.txt is %d bytes, within 10%% of the %d-byte "+

"budget — worth knowing before adding another section",

got, IndexSizeBudget)

}