parser/gotest: Add tests for internal package collector

parser/gotest/internal/collector/collector_test.go

@@ -0,0 +1,91 @@
+package collector
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestClear(t *testing.T) {
+	o := New()
+	o.Append(1, "1")
+	o.Append(2, "2")
+	o.Clear(1)
+
+	want := []string(nil)
+	got := o.Get(1)
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Errorf("Clear(1) did not clear output (-want +got):\n%s", diff)
+	}
+
+	want = []string{"2"}
+	got = o.Get(2)
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Errorf("Clear(1) cleared wrong output (-want +got):\n%s", diff)
+	}
+}
+
+func TestAppendAndGet(t *testing.T) {
+	o := New()
+	o.Append(1, "1.1")
+	o.Append(1, "1.2")
+	o.Append(2, "2")
+	o.Append(1, "1.3")
+
+	want := []string{"1.1", "1.2", "1.3"}
+	got := o.Get(1)
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Errorf("Append() incorrect (-want +got):\n%s", diff)
+	}
+}
+
+func TestContains(t *testing.T) {
+	o := New()
+	o.Append(1, "1")
+	o.Append(2, "2")
+	o.Clear(1)
+
+	if !o.Contains(2) {
+		t.Errorf("Contains(1) incorrect, got true want false")
+	}
+	for i := -100; i < 100; i++ {
+		if i != 2 && o.Contains(i) {
+			t.Errorf("Contains(%d) incorrect, got true want false", i)
+		}
+	}
+}
+
+func TestGetAll(t *testing.T) {
+	o := New()
+	for i := 1; i <= 10; i++ {
+		o.Append(i%3, strconv.Itoa(i))
+	}
+
+	want := []string{"1", "2", "4", "5", "7", "8", "10"}
+	got := o.GetAll(1, 2)
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Errorf("GetAll(1, 2) incorrect (-want +got):\n%s", diff)
+	}
+}
+
+func TestMerge(t *testing.T) {
+	o := New()
+	for i := 1; i <= 10; i++ {
+		o.Append(i%3, strconv.Itoa(i))
+	}
+
+	o.Merge(2, 1)
+
+	want := []string{"1", "2", "4", "5", "7", "8", "10"}
+	got := o.Get(1)
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Errorf("Get(1) after Merge(2, 1) incorrect (-want +got):\n%s", diff)
+	}
+
+	want = []string(nil)
+	got = o.Get(2)
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Errorf("Get(2) after Merge(2, 1) incorrect (-want +got):\n%s", diff)
+	}
+}