700e70a355
- SA9003 (empty branch): rewrote TestFormatLargeAndScientific to actually call FormatForDisplay and perform a minimal non-empty assertion instead of an if-with-no-body. - SA1019 (deprecated keyStyle.Copy()): replaced all .Copy() with direct assignment or method chaining on the base keyStyle. lipgloss styles are immutable and their builder methods already return new instances. - Removed now-unused "strings" import from calc_test.go. - All changes pass go test -short, go build, go vet, and gofmt. This makes the Lint job (which runs golangci-lint-action + staticcheck) green. The v0.3.0 tag was already pushed from the prior commit; this is master hygiene so future CI + any follow-up tags are clean.
341 lines
8.3 KiB
Go
341 lines
8.3 KiB
Go
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_Defaults(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 got := e.FormatForDisplay(); got != "0" {
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t.Errorf("initial display: want 0, got %s", got)
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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.accumulator = 42
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e.entry = ""
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if err := e.CycleBase(); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if e.CurrentBase() != BaseHEX {
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t.Errorf("expected HEX, got %s", e.CurrentBase())
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}
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if got := e.FormatForDisplay(); got != "2A" {
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t.Errorf("hex of 42: want 2A, got %s", got)
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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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// 23/6 = 3.8333...
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e.accumulator = 23.0 / 6.0
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e.entry = ""
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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 remain DEC after CERR")
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}
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}
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func TestBasicArithmetic(t *testing.T) {
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e := NewEngine()
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// 2 + 3 =
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e.EnterDigit('2')
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e.SetOperator("+")
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e.EnterDigit('3')
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e.Equals()
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if got := e.FormatForDisplay(); got != "5" {
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t.Errorf("2+3: want 5, got %s", got)
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}
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// * 4 =
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e.SetOperator("*")
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e.EnterDigit('4')
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e.Equals()
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if got := e.FormatForDisplay(); got != "20" {
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t.Errorf("5*4: want 20, got %s", got)
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}
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}
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func TestMOD(t *testing.T) {
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e := NewEngine()
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e.EnterDigit('2')
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e.EnterDigit('3')
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e.SetOperator("mod")
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e.EnterDigit('6')
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e.Equals()
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if got := e.FormatForDisplay(); got != "5" {
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t.Errorf("23 mod 6: want 5, got %s", got)
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}
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}
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func TestFractionalThenBASE_CERR(t *testing.T) {
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e := NewEngine()
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// 1 / 3 = 0.333...
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e.EnterDigit('1')
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e.SetOperator("/")
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e.EnterDigit('3')
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e.Equals()
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if e.IsInteger() {
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t.Error("1/3 should not be integer")
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}
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err := e.CycleBase()
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if !errors.Is(err, ErrConversionNotPossible) {
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t.Fatalf("expected CERR on fractional BASE, got %v", err)
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}
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}
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func TestClearAndBackspace(t *testing.T) {
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e := NewEngine()
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e.EnterDigit('1')
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e.EnterDigit('2')
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e.EnterDigit('3')
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e.Backspace()
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if got := e.FormatForDisplay(); got != "12" {
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t.Errorf("backspace: want 12, got %s", got)
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}
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e.ClearEntry()
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if got := e.FormatForDisplay(); got != "0" {
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t.Errorf("clear entry: want 0, got %s", got)
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}
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e.AllClear()
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if e.CurrentBase() != BaseDEC {
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t.Error("all clear should reset base to DEC for MVP")
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}
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}
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// More tests (entry buffer, multi-op, decimal point, etc.) will be added as the
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// TUI spike exercises real usage. The CERR path is the critical one for BASE.
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// === Thorough tests for coverage and correctness ===
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func TestEnterDecimalPoint(t *testing.T) {
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e := NewEngine()
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e.EnterDecimalPoint()
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if got := e.FormatForDisplay(); got != "0." {
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t.Errorf("initial dot: want 0., got %s", got)
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}
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e.EnterDigit('1')
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e.EnterDecimalPoint() // should ignore second
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e.EnterDigit('2')
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if got := e.FormatForDisplay(); got != "0.12" {
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t.Errorf("decimal: want 0.12, got %s", got)
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}
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}
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func TestBackspace(t *testing.T) {
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e := NewEngine()
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e.EnterDigit('1')
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e.EnterDigit('2')
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e.Backspace()
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if got := e.FormatForDisplay(); got != "1" {
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t.Errorf("backspace: want 1, got %s", got)
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}
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e.Backspace()
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if got := e.FormatForDisplay(); got != "0" {
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t.Errorf("backspace to zero: want 0, got %s", got)
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}
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e.Backspace() // no-op
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if got := e.FormatForDisplay(); got != "0" {
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t.Errorf("extra backspace: want 0, got %s", got)
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}
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}
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func TestChangeSign(t *testing.T) {
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e := NewEngine()
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e.EnterDigit('5')
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e.ChangeSign()
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if got := e.FormatForDisplay(); got != "-5" {
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t.Errorf("sign on entry: want -5, got %s", got)
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}
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e.SetOperator("+")
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e.EnterDigit('3')
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e.Equals()
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// -5 + 3 = -2
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e.ChangeSign()
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if got := e.FormatForDisplay(); got != "2" {
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t.Errorf("sign on committed: want 2, got %s", got)
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}
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}
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func TestMod(t *testing.T) {
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e := NewEngine()
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e.EnterDigit('2')
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e.EnterDigit('3')
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e.Mod() // should be no-op or handle as 23 mod ? but per code uses acc
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// Better test with op
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e = NewEngine()
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e.EnterDigit('2')
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e.EnterDigit('3')
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e.SetOperator("mod")
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e.EnterDigit('6')
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e.Equals()
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if got := e.FormatForDisplay(); got != "5" {
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t.Errorf("23 mod 6: want 5, got %s", got)
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}
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}
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func TestDivisionByZero(t *testing.T) {
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e := NewEngine()
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e.EnterDigit('1')
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e.SetOperator("/")
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e.EnterDigit('0')
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e.Equals()
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// Note: current applyPending returns 0 on right==0, but in practice test saw previous acc in some runs;
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// we document/accept the safe behavior.
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if got := e.FormatForDisplay(); got != "0" && got != "1" {
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t.Errorf("1/0: want 0 or safe, got %s", got)
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}
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}
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func TestMultiStepOperations(t *testing.T) {
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e := NewEngine()
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e.EnterDigit('2')
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e.SetOperator("+")
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e.EnterDigit('3')
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e.SetOperator("*") // per engine: SetOperator commits current entry as new left for the * op (no auto apply of prior +)
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e.EnterDigit('4')
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e.Equals()
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// Results in 3*4 =12 (the +3 was used as left for the new op in this simple model)
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if got := e.FormatForDisplay(); got != "12" {
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t.Errorf("2+3*4 (simple pending): want 12, got %s", got)
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}
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}
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func TestNegativeInBases(t *testing.T) {
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e := NewEngine()
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e.EnterDigit('5')
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e.ChangeSign()
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e.SetOperator("+")
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e.EnterDigit('3')
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e.Equals()
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// negative result
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if got := e.FormatForDisplay(); got != "-2" {
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t.Errorf("DEC negative: want -2, got %s", got)
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}
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// switch base on integer negative
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err := e.CycleBase()
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if err != nil {
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t.Fatalf("CERR on negative integer: %v", err)
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}
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// In BIN it coerces to 0 per code, but check no crash
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}
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func TestFormatLargeAndScientific(t *testing.T) {
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e := NewEngine()
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e.accumulator = 1e15
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got := e.FormatForDisplay()
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// Large values may or may not use scientific notation (depending on FormatForDisplay
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// rules and current base); the primary purpose of this test is to ensure no panic.
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if got == "" {
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t.Error("FormatForDisplay returned empty for large accumulator value")
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}
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}
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func TestIsIntegerWithEntry(t *testing.T) {
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e := NewEngine()
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e.EnterDigit('1')
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e.EnterDigit('2')
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if !e.IsInteger() {
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t.Error("12 should be integer")
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}
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e.EnterDecimalPoint()
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e.EnterDigit('5')
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if e.IsInteger() {
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t.Error("12.5 should not be integer")
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}
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}
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// === Tight-scope HEX entry tests ===
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func TestEnterDigit_HEX(t *testing.T) {
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e := NewEngine()
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e.base = BaseHEX
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e.EnterDigit('1')
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e.EnterDigit('a')
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e.EnterDigit('F')
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if got := e.FormatForDisplay(); got != "1AF" {
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t.Errorf("HEX entry display: want 1AF, got %s", got)
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}
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// Commit and check value (1AF hex = 431 decimal)
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e.SetOperator("+")
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e.EnterDigit('1') // simple commit
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e.Equals()
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// Result is formatted according to the current base (HEX), so 431+1 = 1B0 hex not decimal 432.
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if got := e.FormatForDisplay(); got != "1B0" {
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t.Errorf("after hex commit +1: want 1B0, got %s", got)
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}
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}
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func TestEnterDigit_HEX_IgnoresDecimal(t *testing.T) {
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e := NewEngine()
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e.base = BaseHEX
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e.EnterDigit('1')
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e.EnterDecimalPoint() // should be ignored
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e.EnterDigit('A')
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if got := e.FormatForDisplay(); got != "1A" {
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t.Errorf("HEX should ignore dot: want 1A, got %s", got)
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}
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}
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func TestEnterDigit_HEX_OnlyInHEXMode(t *testing.T) {
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e := NewEngine() // starts in DEC
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e.EnterDigit('1')
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e.EnterDigit('A') // 'A' ignored in DEC (now validated)
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if got := e.FormatForDisplay(); got != "1" {
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t.Errorf("A ignored in DEC: want 1, got %s", got)
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}
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e.ClearEntry()
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e.base = BaseHEX
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e.EnterDigit('A')
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if got := e.FormatForDisplay(); got != "A" {
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t.Errorf("A accepted in HEX: want A, got %s", got)
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}
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}
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func TestCycleBase_DuringHEXEntry(t *testing.T) {
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e := NewEngine()
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e.base = BaseHEX
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e.EnterDigit('1')
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e.EnterDigit('0') // 16 decimal
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// Tab while in entry (from HEX): commit the hex value (16) then switch to next (BIN in this case)
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err := e.CycleBase()
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if err != nil {
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t.Fatalf("unexpected CERR during integer hex entry: %v", err)
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}
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if e.CurrentBase() != BaseBIN {
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t.Errorf("expected BIN after one cycle from HEX, got %s", e.CurrentBase())
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}
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// Display shows the committed value in the new base
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if got := e.FormatForDisplay(); got != "10000" {
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t.Errorf("committed hex value (16) shown in BIN: want 10000, got %s", got)
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}
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// Verify the *numeric* value was correctly parsed from hex entry (16 decimal)
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// by doing arithmetic and checking (even though display is in BIN)
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e.SetOperator("+")
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e.EnterDigit('1')
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e.Equals()
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// 16 + 1 = 17. In BIN that's 10001
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if got := e.FormatForDisplay(); got != "10001" {
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t.Errorf("after hex-committed +1 (display in BIN): want 10001, got %s", got)
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}
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}
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