feat: gamemaster

gamemaster/internal/domain/engineversion/semver_test.go

@@ -0,0 +1,85 @@
+package engineversion
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestParseSemverNormalises(t *testing.T) {
+	tests := []struct {
+		input string
+		want  string
+	}{
+		{"1.2.3", "v1.2.3"},
+		{"v1.2.3", "v1.2.3"},
+		{" v0.4.0 ", "v0.4.0"},
+		{"v2.0.0-rc.1", "v2.0.0-rc.1"},
+		{"v2.0.0+build.7", "v2.0.0+build.7"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.input, func(t *testing.T) {
+			got, err := ParseSemver(tt.input)
+			require.NoError(t, err)
+			assert.Equal(t, tt.want, got)
+		})
+	}
+}
+
+func TestParseSemverRejects(t *testing.T) {
+	tests := []string{
+		"",
+		"   ",
+		"latest",
+		"1",
+		"1.2",
+		"v1.2",
+		"1.2.3.4",
+		"v1.2.x",
+	}
+	for _, input := range tests {
+		t.Run(input, func(t *testing.T) {
+			_, err := ParseSemver(input)
+			require.Error(t, err)
+			assert.True(t, errors.Is(err, ErrInvalidSemver))
+		})
+	}
+}
+
+func TestIsPatchUpgrade(t *testing.T) {
+	tests := []struct {
+		name    string
+		current string
+		next    string
+		want    bool
+	}{
+		{"same patch", "v1.2.3", "v1.2.3", true},
+		{"patch bump", "v1.2.3", "v1.2.4", true},
+		{"patch downgrade", "1.2.4", "1.2.0", true},
+		{"prerelease patch", "v1.2.3", "v1.2.3-rc.1", true},
+		{"minor bump", "v1.2.3", "v1.3.0", false},
+		{"minor downgrade", "v1.2.3", "v1.1.9", false},
+		{"major bump", "v1.2.3", "v2.0.0", false},
+		{"major downgrade", "v2.0.0", "v1.9.9", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := IsPatchUpgrade(tt.current, tt.next)
+			require.NoError(t, err)
+			assert.Equal(t, tt.want, got)
+		})
+	}
+}
+
+func TestIsPatchUpgradeRejectsBadInputs(t *testing.T) {
+	_, err := IsPatchUpgrade("garbage", "v1.2.3")
+	require.Error(t, err)
+	assert.True(t, errors.Is(err, ErrInvalidSemver))
+
+	_, err = IsPatchUpgrade("v1.2.3", "")
+	require.Error(t, err)
+	assert.True(t, errors.Is(err, ErrInvalidSemver))
+}