From b41c61ecb9a2e17c9fb16335748fba0f1749f81f Mon Sep 17 00:00:00 2001
From: Nathan <148575555+nathan-artie@users.noreply.github.com>
Date: Wed, 26 Jun 2024 11:57:38 -0700
Subject: [PATCH] Tests

---
 lib/typing/decimal/decimal_test.go | 48 ++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 lib/typing/decimal/decimal_test.go

diff --git a/lib/typing/decimal/decimal_test.go b/lib/typing/decimal/decimal_test.go
new file mode 100644
index 000000000..2303788a9
--- /dev/null
+++ b/lib/typing/decimal/decimal_test.go
@@ -0,0 +1,48 @@
+package decimal
+
+import (
+	"testing"
+
+	"github.com/artie-labs/transfer/lib/numbers"
+	"github.com/artie-labs/transfer/lib/ptr"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewDecimal(t *testing.T) {
+	// Nil precision:
+	assert.Equal(t, "0", NewDecimal(nil, numbers.MustParseDecimal("0")).String())
+	// Precision = -1 (PrecisionNotSpecified):
+	assert.Equal(t, DecimalDetails{scale: 2, precision: ptr.ToInt(-1)}, NewDecimal(ptr.ToInt(-1), numbers.MustParseDecimal("12.34")).Details())
+	// Precision = scale:
+	assert.Equal(t, DecimalDetails{scale: 2, precision: ptr.ToInt(2)}, NewDecimal(ptr.ToInt(2), numbers.MustParseDecimal("12.34")).Details())
+	// Precision < scale:
+	assert.Equal(t, DecimalDetails{scale: 2, precision: ptr.ToInt(3)}, NewDecimal(ptr.ToInt(1), numbers.MustParseDecimal("12.34")).Details())
+	// Precision > scale:
+	assert.Equal(t, DecimalDetails{scale: 2, precision: ptr.ToInt(4)}, NewDecimal(ptr.ToInt(4), numbers.MustParseDecimal("12.34")).Details())
+}
+
+func TestDecimal_Scale(t *testing.T) {
+	assert.Equal(t, 0, NewDecimal(nil, numbers.MustParseDecimal("0")).Scale())
+	assert.Equal(t, 0, NewDecimal(nil, numbers.MustParseDecimal("12345")).Scale())
+	assert.Equal(t, 0, NewDecimal(nil, numbers.MustParseDecimal("12300")).Scale())
+	assert.Equal(t, 1, NewDecimal(nil, numbers.MustParseDecimal("12300.0")).Scale())
+	assert.Equal(t, 2, NewDecimal(nil, numbers.MustParseDecimal("12300.00")).Scale())
+	assert.Equal(t, 2, NewDecimal(nil, numbers.MustParseDecimal("12345.12")).Scale())
+	assert.Equal(t, 3, NewDecimal(nil, numbers.MustParseDecimal("-12345.123")).Scale())
+}
+
+func TestDecimal_Details(t *testing.T) {
+	// Nil precision:
+	assert.Equal(t, DecimalDetails{scale: 0}, NewDecimal(nil, numbers.MustParseDecimal("0")).Details())
+	assert.Equal(t, DecimalDetails{scale: 0}, NewDecimal(nil, numbers.MustParseDecimal("12345")).Details())
+	assert.Equal(t, DecimalDetails{scale: 0}, NewDecimal(nil, numbers.MustParseDecimal("-12")).Details())
+	assert.Equal(t, DecimalDetails{scale: 2}, NewDecimal(nil, numbers.MustParseDecimal("12345.12")).Details())
+	assert.Equal(t, DecimalDetails{scale: 3}, NewDecimal(nil, numbers.MustParseDecimal("-12345.123")).Details())
+
+	// 10 precision:
+	assert.Equal(t, DecimalDetails{scale: 0, precision: ptr.ToInt(10)}, NewDecimal(ptr.ToInt(10), numbers.MustParseDecimal("0")).Details())
+	assert.Equal(t, DecimalDetails{scale: 0, precision: ptr.ToInt(10)}, NewDecimal(ptr.ToInt(10), numbers.MustParseDecimal("12345")).Details())
+	assert.Equal(t, DecimalDetails{scale: 0, precision: ptr.ToInt(10)}, NewDecimal(ptr.ToInt(10), numbers.MustParseDecimal("-12")).Details())
+	assert.Equal(t, DecimalDetails{scale: 2, precision: ptr.ToInt(10)}, NewDecimal(ptr.ToInt(10), numbers.MustParseDecimal("12345.12")).Details())
+	assert.Equal(t, DecimalDetails{scale: 3, precision: ptr.ToInt(10)}, NewDecimal(ptr.ToInt(10), numbers.MustParseDecimal("-12345.123")).Details())
+}