Add test for getMinTargets()

server/pkg/api/server_add_instance_test.go

@@ -0,0 +1,60 @@
+package api
+
+import (
+	"reflect"
+	"testing"
+)
+
+func Test_getMinTargets(t *testing.T) {
+	var (
+		hostA  = targetHost{percentOverCommit: 1}
+		hostA2 = targetHost{percentOverCommit: 1}
+		hostB  = targetHost{percentOverCommit: 2}
+		hostC  = targetHost{percentOverCommit: 3}
+	)
+
+	type args struct {
+		hosts []targetHost
+	}
+	tests := []struct {
+		name string
+		args args
+		want []targetHost
+	}{
+		{
+			name: "Single host",
+			args: args{
+				hosts: []targetHost{hostA},
+			},
+			want: []targetHost{hostA},
+		},
+		{
+			name: "Multiple host",
+			args: args{
+				hosts: []targetHost{hostA, hostB, hostC},
+			},
+			want: []targetHost{hostA},
+		},
+		{
+			name: "Multiple host (random order)",
+			args: args{
+				hosts: []targetHost{hostC, hostA, hostB},
+			},
+			want: []targetHost{hostA},
+		},
+		{
+			name: "Multiple host result",
+			args: args{
+				hosts: []targetHost{hostA, hostA2, hostB, hostC},
+			},
+			want: []targetHost{hostA, hostA2},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := getMinTargets(tt.args.hosts); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("getMinTargets() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}