fix: send correct time unit when writing Points

[NguyenHoangSon96]

Closes #382

Proposed Changes

• When writing Points, precision in query parameters always set to nanosecond because time in Points always converted into nanoseconds by default.
• Update test cases to respect the new changes above.

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• Tests pass
• Commit messages are conventional
• Sign CLA (if not already signed)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.25%. Comparing base (656e99e) to head (e180f32).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #384      +/-   ##
==========================================
+ Coverage   88.19%   88.25%   +0.05%     
==========================================
  Files          21       21              
  Lines        1525     1532       +7     
  Branches      275      277       +2     
==========================================
+ Hits         1345     1352       +7     
  Misses         82       82              
  Partials       98       98              

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[Copilot]

Pull request overview

This PR addresses a write precision mismatch when writing Point objects to InfluxDB v3: the line protocol payload is serialized with nanosecond timestamps, so the request’s precision query parameter must match to avoid server-side “timestamp out of range for precision” errors (issue #382).

Changes:

• Force precision=nanosecond in write query parameters when writing Point instances.
• Update unit tests to expect precision=nanosecond for Point writes even when client config sets another precision.
• Add an end-to-end integration test covering writing points with timestamps provided in different input units.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
src/main/java/com/influxdb/v3/client/internal/InfluxDBClientImpl.java	Changes precision selection logic for write requests when writing Points.
src/test/java/com/influxdb/v3/client/InfluxDBClientWriteTest.java	Updates expected precision in write request assertions for point writes.
src/test/java/com/influxdb/v3/client/integration/E2ETest.java	Adds an integration test that writes multiple points with mixed timestamp input units.
CHANGELOG.md	Documents the bug fix in the unreleased section.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 13 comments.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (1)

src/main/java/com/influxdb/v3/client/internal/InfluxDBClientImpl.java:34

• Unused import java.util.function.Predicate is introduced but not used anywhere in this class. This will fail the repository's Checkstyle UnusedImports rule; please remove it.

import java.util.logging.Logger;

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

[alespour]

I think we should tweak javadoc for precision args just a tiny bit, Copilot finding makes sense. And cover the logic more by unit test in addition to e2e test.

[alespour]

This should improve coverage of fixed logic by unit tests.

Suggested change

	@ParameterizedTest(name = "{0}")
	@MethodSource("pointPrecisionIgnoredCases")
	void pointWritesIgnoreWriteOptionsPrecision(
	String name,
	WritePrecision configuredPrecision,
	boolean manyPoints) throws Exception {
	mockServer.enqueue(createResponse(200));
	ClientConfig cfg = new ClientConfig.Builder()
	.host(baseURL)
	.token("TOKEN".toCharArray())
	.database("DB")
	.build();
	try (InfluxDBClient client = InfluxDBClient.getInstance(cfg)) {
	Point point = new Point("mem");
	point.setTag("tag", "one");
	point.setField("value", 1.0);
	WriteOptions options = new WriteOptions.Builder()
	.precision(configuredPrecision)
	.build();
	if (manyPoints) {
	client.writePoints(List.of(point), options);
	} else {
	client.writePoint(point, options);
	}
	}
	checkWriteCalled("/api/v3/write_lp", "DB", "nanosecond", true, null, null, false);
	}
	private static Stream<Arguments> pointPrecisionIgnoredCases() {
	return Stream.of(
	Arguments.of("writePoint precision=S", WritePrecision.S, false),
	Arguments.of("writePoint precision=MS", WritePrecision.MS, false),
	Arguments.of("writePoints precision=S", WritePrecision.S, true),
	Arguments.of("writePoints precision=US", WritePrecision.US, true)
	);
	}

[alespour]

I would just remove a word to avoid a bit confusing contradiction with the sentence that follows after it.

Suggested change

	* <li><code>writePrecision</code> - precision to use when writing points to InfluxDB.
	* <li><code>writePrecision</code> - precision to use when writing to InfluxDB.

[alespour]

I would just remove a word to avoid a bit confusing contradiction with the sentence that follows after it.

Suggested change

	* @param writePrecision default precision to use for the timestamp of points
	* @param writePrecision default precision to use for the timestamp

[alespour]

I would just remove a word to avoid a bit confusing contradiction with the sentence that follows after it.

Suggested change

	* @param precision The precision to use for the timestamp of points.
	* @param precision The precision to use for the timestamp.

[alespour]

Suggested change

	* @param precision The precision to use for the timestamp of points.
	* @param precision The precision to use for the timestamp.

[alespour]

Suggested change

	* @param precision The precision to use for the timestamp of points.
	* @param precision The precision to use for the timestamp.

[alespour]

Suggested change

	* @param precision The precision to use for the timestamp of points.
	* @param precision The precision to use for the timestamp.

[alespour]

Suggested change

	* @param precision The precision to use for the timestamp of points.
	* @param precision The precision to use for the timestamp.

[alespour]

Suggested change

	* @param precision The precision to use for the timestamp of points.
	* @param precision The precision to use for the timestamp.

[alespour]

Suggested change

	* @param precision The precision to use for the timestamp of points.
	* @param precision The precision to use for the timestamp.