From f34a58dd5853a61028bc8f4837dd30b91a312bc6 Mon Sep 17 00:00:00 2001
From: Charles Iliya Krempeaux <iamreiver@gmail.com>
Date: Sun, 16 Jun 2024 06:42:51 -0700
Subject: [PATCH] opt.Optional[T].IsNothing() opt.Optional[T].IsSomething()

---
 optional_isnothing.go            |  5 ++
 optional_isnothing_int_test.go   | 91 ++++++++++++++++++++++++++++++++
 optional_issomething.go          |  5 ++
 optional_issomething_int_test.go | 91 ++++++++++++++++++++++++++++++++
 4 files changed, 192 insertions(+)
 create mode 100644 optional_isnothing.go
 create mode 100644 optional_isnothing_int_test.go
 create mode 100644 optional_issomething.go
 create mode 100644 optional_issomething_int_test.go

diff --git a/optional_isnothing.go b/optional_isnothing.go
new file mode 100644
index 0000000..0183844
--- /dev/null
+++ b/optional_isnothing.go
@@ -0,0 +1,5 @@
+package opt
+
+func (receiver Optional[T]) IsNothing() bool {
+	return !(receiver.something)
+}
diff --git a/optional_isnothing_int_test.go b/optional_isnothing_int_test.go
new file mode 100644
index 0000000..70756d2
--- /dev/null
+++ b/optional_isnothing_int_test.go
@@ -0,0 +1,91 @@
+package opt_test
+
+import (
+	"testing"
+
+	"sourcecode.social/reiver/go-opt"
+)
+
+func TestOptional_IsNothing_int(t *testing.T) {
+	tests := []struct{
+		Optional opt.Optional[int]
+		Expected bool
+	}{
+		{
+			Optional: opt.Nothing[int](),
+			Expected: true,
+		},
+
+
+
+		{
+			Optional: opt.Something(-255),
+			Expected: false,
+		},
+
+		{
+			Optional: opt.Something(-5),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(-4),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(-3),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(-2),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(-1),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(0),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(1),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(2),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(3),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(4),
+			Expected: false,
+		},
+		{
+			Optional: opt.Something(5),
+			Expected: false,
+		},
+
+		{
+			Optional: opt.Something(255),
+			Expected: false,
+		},
+	}
+
+	for testNumber, test := range tests {
+
+		actual := test.Optional.IsNothing()
+
+		expected := test.Expected
+
+		if expected != actual {
+			t.Errorf("For test #%d, the actual value of is-nothing it not what was expected.", testNumber)
+			t.Logf("EXPECTED: %t", expected)
+			t.Logf("ACTUAL:   %t", actual)
+			t.Logf("OPTIONAL: %#v", test.Optional)
+			continue
+		}
+	}
+}
diff --git a/optional_issomething.go b/optional_issomething.go
new file mode 100644
index 0000000..db5825f
--- /dev/null
+++ b/optional_issomething.go
@@ -0,0 +1,5 @@
+package opt
+
+func (receiver Optional[T]) IsSomething() bool {
+	return receiver.something
+}
diff --git a/optional_issomething_int_test.go b/optional_issomething_int_test.go
new file mode 100644
index 0000000..66a36ec
--- /dev/null
+++ b/optional_issomething_int_test.go
@@ -0,0 +1,91 @@
+package opt_test
+
+import (
+	"testing"
+
+	"sourcecode.social/reiver/go-opt"
+)
+
+func TestOptional_IsSomething_int(t *testing.T) {
+	tests := []struct{
+		Optional opt.Optional[int]
+		Expected bool
+	}{
+		{
+			Optional: opt.Nothing[int](),
+			Expected: false,
+		},
+
+
+
+		{
+			Optional: opt.Something(-255),
+			Expected: true,
+		},
+
+		{
+			Optional: opt.Something(-5),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(-4),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(-3),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(-2),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(-1),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(0),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(1),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(2),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(3),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(4),
+			Expected: true,
+		},
+		{
+			Optional: opt.Something(5),
+			Expected: true,
+		},
+
+		{
+			Optional: opt.Something(255),
+			Expected: true,
+		},
+	}
+
+	for testNumber, test := range tests {
+
+		actual := test.Optional.IsSomething()
+
+		expected := test.Expected
+
+		if expected != actual {
+			t.Errorf("For test #%d, the actual value of is-something it not what was expected.", testNumber)
+			t.Logf("EXPECTED: %t", expected)
+			t.Logf("ACTUAL:   %t", actual)
+			t.Logf("OPTIONAL: %#v", test.Optional)
+			continue
+		}
+	}
+}