45 lines
1.0 KiB
Go
45 lines
1.0 KiB
Go
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package calc
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import (
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"errors"
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"testing"
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)
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func TestNewEngine_DefaultsToDEC(t *testing.T) {
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e := NewEngine()
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if e.CurrentBase() != BaseDEC {
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t.Errorf("expected DEC, got %s", e.CurrentBase())
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}
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if !e.IsInteger() {
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t.Error("0 should be integer")
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}
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}
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func TestCycleBase_IntegerOK(t *testing.T) {
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e := NewEngine()
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e.value = 42 // integer
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if err := e.CycleBase(); err != nil {
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t.Fatalf("unexpected error cycling from integer: %v", err)
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}
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if e.CurrentBase() != BaseHEX {
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t.Errorf("expected HEX after one cycle, got %s", e.CurrentBase())
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}
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}
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func TestCycleBase_FractionalCERR(t *testing.T) {
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e := NewEngine()
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e.value = 23.0 / 6.0 // 3.8333...
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err := e.CycleBase()
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if !errors.Is(err, ErrConversionNotPossible) {
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t.Fatalf("expected ErrConversionNotPossible, got %v", err)
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}
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if e.CurrentBase() != BaseDEC {
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t.Error("base must not change on CERR")
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}
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}
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// TODO (phase 2): more tests for FormatForDisplay (hex/bin/oct of integers),
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// ops, clears, entry, combined fractional + multiple BASE presses, etc.
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