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@git-hulk
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@git-hulk git-hulk commented Dec 18, 2025

Currently, the following test case is failing on my side due to using time.UnixMicro to truncate the precision:

    service_test.go:363: Get session events mismatch: (-want +got):
          database.events{
                &{
                        LLMResponse:  {},
        -               ID:           "4",
        +               ID:           "3",
        -               Timestamp:    s"0001-01-01 00:00:00.000004 +0000 UTC",
        +               Timestamp:    s"0001-01-01 08:05:43.000003 +0805 +0805",
                        InvocationID: "",
                        Branch:       "",
                        ... // 3 identical fields
                },

The root cause should be time.UnixMicro will change the time.Time to the local timezone. To work around this, use the fixed time with the local timezone instead of UTC.

It's related to the change in PR #414.

Currently, the following test case is failed on my side due to using `time.UnixMicro`
to truncate the precision:

```shell
    service_test.go:363: Get session events mismatch: (-want +got):
          database.events{
                &{
                        LLMResponse:  {},
        -               ID:           "4",
        +               ID:           "3",
        -               Timestamp:    s"0001-01-01 00:00:00.000004 +0000 UTC",
        +               Timestamp:    s"0001-01-01 08:05:43.000003 +0805 +0805",
                        InvocationID: "",
                        Branch:       "",
                        ... // 3 identical fields
                },
```

The root cause should be caused by the convertion of the zero time. To
work around this, just simply use the time.Now() as the timestamp.
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Summary of Changes

Hello @git-hulk, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses and fixes a specific issue within the test suite where time.Time{} was being used as a base for generating timestamps in test events. This approach led to precision truncation problems when converting to Unix microseconds, causing tests to fail. The change ensures that test timestamps are generated from the current time, thereby stabilizing the test suite and preventing future regressions related to time handling.

Highlights

  • Test Case Fix: Resolves failures in service_test.go where time.UnixMicro was truncating precision when handling zero time values. This was causing mismatches in expected event timestamps.
  • Timestamp Generation: Updates test event timestamp generation from using time.Time{} (zero time) as a base to time.Now(), ensuring more robust and accurate time-based comparisons in tests.

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Code Review

This pull request addresses a test failure caused by using a zero time.Time value, which led to precision and timezone issues. The fix replaces the zero time with time.Now() to provide a valid timestamp base. This correctly resolves the test failure. I have one suggestion to further improve the test's reliability by using a fixed timestamp instead of time.Now(), which will make the test fully deterministic and easier to debug in the future.

session/database/service_test.go Outdated Show resolved Hide resolved
@git-hulk git-hulk changed the title Fix test cases failure due to zero time Fix test cases failure due to the time zone Dec 18, 2025
@git-hulk
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git-hulk commented Dec 18, 2025

After diving deep, I found the root cause is that SQLite only supports the ISO-8601 string comparison, see stackoverflow. So, when storing and filtering rows with different time zones, it might retrieve the wrong value.

cc @dpasiukevich

@dpasiukevich
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Thanks for checking that!

But will this issue affect actual SQLite based session service?

@git-hulk
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But will this issue affect actual SQLite based session service?

I think it only affects test cases that use time.Time{} to create a time value because it uses the UTC time zone. And it won't be an issue if we use the same time zone when inserting and querying.

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