package helps import (	"testing") func TestHasMeaningfulCodexOutputDelta(t *testing.T) {	// Empty string deltas must NOT be treated as meaningful output	if HasMeaningfulCodexOutputDelta([]byte(`{"type":"response.output_text.delta","delta":""}`)) {		t.Fatal("empty output_text.delta must return false")	}	if HasMeaningfulCodexOutputDelta([]byte(`{"type":"response.output_text.delta","delta":"   "}`)) {		t.Fatal("whitespace output_text.delta must return false")	}	if HasMeaningfulCodexOutputDelta([]byte(`{"type":"response.reasoning_text.delta","delta":""}`)) {		t.Fatal("empty reasoning_text.delta must return false")	}	if HasMeaningfulCodexOutputDelta([]byte(`{"type":"response.function_call_arguments.delta","delta":""}`)) {		t.Fatal("empty function_call_arguments.delta must return false")	} 	// Meaningful content deltas	if !HasMeaningfulCodexOutputDelta([]byte(`{"type":"response.output_text.delta","delta":"Hello"}`)) {		t.Fatal("non-empty output_text.delta must return true")	}	if !HasMeaningfulCodexOutputDelta([]byte(`{"type":"response.reasoning_text.delta","delta":"thinking"}`)) {		t.Fatal("non-empty reasoning_text.delta must return true")	}	if !HasMeaningfulCodexOutputDelta([]byte(`{"type":"response.function_call_arguments.delta","delta":"{\"id\":1}"}`)) {		t.Fatal("non-empty function_call_arguments.delta must return true")	}} func TestIsCodexTerminalEmptyIncomplete(t *testing.T) {	// Case 1: True empty incomplete with explicit numeric 0	trueEmpty := []byte(`{"type":"response.incomplete","response":{"id":"r1","output":[],"usage":{"output_tokens":0}}}`)	if !IsCodexTerminalEmptyIncomplete(trueEmpty, 0, false) {		t.Fatal("expected true for true empty incomplete with numeric 0 tokens")	} 	// Case 2: Partial output with non-empty text deltas emitted	if IsCodexTerminalEmptyIncomplete(trueEmpty, 0, true) {		t.Fatal("expected false when output deltas were observed")	} 	// Case 3: Partial output with completed output items	if IsCodexTerminalEmptyIncomplete(trueEmpty, 1, false) {		t.Fatal("expected false when output items exist")	} 	// Case 4: Positive output tokens	positiveTokens := []byte(`{"type":"response.incomplete","response":{"id":"r1","output":[],"usage":{"output_tokens":5}}}`)	if IsCodexTerminalEmptyIncomplete(positiveTokens, 0, false) {		t.Fatal("expected false when output_tokens > 0")	} 	// Case 5: Float output tokens (e.g. 0.5) must NOT be truncated to 0	floatTokens := []byte(`{"type":"response.incomplete","response":{"id":"r1","output":[],"usage":{"output_tokens":0.5}}}`)	if IsCodexTerminalEmptyIncomplete(floatTokens, 0, false) {		t.Fatal("expected false when output_tokens is 0.5")	} 	// Case 6: Missing output_tokens field	missingTokens := []byte(`{"type":"response.incomplete","response":{"id":"r1","output":[],"usage":{}}}`)	if IsCodexTerminalEmptyIncomplete(missingTokens, 0, false) {		t.Fatal("expected false when output_tokens is missing")	} 	// Case 7: Null output_tokens field	nullTokens := []byte(`{"type":"response.incomplete","response":{"id":"r1","output":[],"usage":{"output_tokens":null}}}`)	if IsCodexTerminalEmptyIncomplete(nullTokens, 0, false) {		t.Fatal("expected false when output_tokens is null")	} 	// Case 8: response.output array contains items	nonEmptyOutput := []byte(`{"type":"response.incomplete","response":{"id":"r1","output":[{"type":"message"}],"usage":{"output_tokens":0}}}`)	if IsCodexTerminalEmptyIncomplete(nonEmptyOutput, 0, false) {		t.Fatal("expected false when response.output is non-empty")	} 	// Case 9: Different event type (response.completed)	completedEvent := []byte(`{"type":"response.completed","response":{"id":"r1","output":[],"usage":{"output_tokens":0}}}`)	if IsCodexTerminalEmptyIncomplete(completedEvent, 0, false) {		t.Fatal("expected false for response.completed")	}}