package context

import (
	"testing"
)


func TestDefaultArguments(t *testing.T) {

	ctx, err := Create(2.2);

	if err != nil {
		t.Errorf("[Unexpected error]: %s", err);
		return;
	}
	// check all optional arguments
	if ctx.Window() != 2.2 {
		t.Errorf("Mismatching window; expected '%f' ; got '%f'", 2.2, ctx.Window())
		return
	}

	if ctx.MinDepth() != DefaultMin {
		t.Errorf("Invalid default value for 'min'; expected '%d' ; got '%d'", DefaultMin, ctx.MinDepth())
		return
	}

	if ctx.DepthThreshold() != DefaultThr {
		t.Errorf("Invalid default value for 'thr'; expected '%d' ; got '%d'", DefaultThr, ctx.DepthThreshold())
		return
	}

	if ctx.MaxDepth() != DefaultMax {
		t.Errorf("Invalid default value for 'max'; expected '%d' ; got '%d'", DefaultMax, ctx.MaxDepth())
		return
	}

}

func TestOptionalMinConstraint(t *testing.T) {

	ctx, err := Create(2.2, 0x0f);

	if err != nil {
		t.Errorf("[Unexpected error]: %s", err);
		return;
	}

	ctx, err = Create(2.2, 0x0f-1);
	if err == nil {
		t.Errorf("Expected an error with 'min' < %d ; got min=%d", 0x0f, ctx.MinDepth());
		return;
	}

}

func TestOptionalMaxConstraint(t *testing.T) {

	ctx, err := Create(2.2, 0xf1, 0x02, 0xf1+0x02+1);

	if err != nil {
		t.Errorf("[Unexpected error]: %s", err);
		return;
	}

	ctx, err = Create(2.2, 0xf1, 0x02, 0xf1+0x02);
	if err == nil {
		t.Errorf("Expected an error with 'max' > 'min'+'thr' ; got max=%d, min=%d, thr=%d", ctx.MinDepth(), ctx.MaxDepth(), ctx.DepthThreshold());
		return;
	}

}