Added more tests

src/arm/Compare_test.go

@@ -0,0 +1,25 @@
+package arm_test
+
+import (
+	"testing"
+
+	"git.urbach.dev/cli/q/src/arm"
+	"git.urbach.dev/cli/q/src/cpu"
+	"git.urbach.dev/go/assert"
+)
+
+func TestCompareRegisterNumber(t *testing.T) {
+	usagePatterns := []struct {
+		Source cpu.Register
+		Number int
+		Code   uint32
+	}{
+		{arm.X0, 1, 0xF100041F},
+	}
+
+	for _, pattern := range usagePatterns {
+		t.Logf("cmp %s, %d", pattern.Source, pattern.Number)
+		code := arm.CompareRegisterNumber(pattern.Source, pattern.Number)
+		assert.DeepEqual(t, code, pattern.Code)
+	}
+}