Function TestTimeTrunc

functional/functional_test.go:1369–1402

(t *testing.T)

}

func TestTimeTrunc(t *testing.T) {
	// 2024-01-15 10:30:45.123456789 UTC
	nanos := int64(1705314645123456789)

	tests := []struct {
		unit      string
		wantNanos int64
	}{
		{"/day", 1705276800000000000}, // 2024-01-15 00:00:00 UTC
		{"/hour", 1705312800000000000}, // 2024-01-15 10:00:00 UTC
		{"/minute", 1705314600000000000}, // 2024-01-15 10:30:00 UTC
		{"/second", 1705314645000000000}, // 2024-01-15 10:30:45 UTC
		{"/millisecond", 1705314645123000000},
		{"/microsecond", 1705314645123456000},
		{"/nanosecond", 1705314645123456789},
	}

	for _, test := range tests {
		t.Run(test.unit, func(t *testing.T) {
			expr := ast.ApplyFn{symbols.TimeTrunc, []ast.BaseTerm{
				ast.Time(nanos),
				name(test.unit),
			}}
			got, err := EvalApplyFn(expr, ast.ConstSubstMap{})
			if err != nil {
				t.Fatalf("EvalApplyFn(%v) failed with %v", expr, err)
			}
			want := ast.Time(test.wantNanos)
			if !got.Equals(want) {
				t.Errorf("EvalApplyFn(%v) = %v, want %v", expr, got, want)
			}
		})
	}
}

func TestTimeTruncInvalid(t *testing.T) {
	nanos := int64(1705314600000000000)