Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
it tests that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "it tests that" is correct and usable in written English.
You can use it when referring to a process or method that evaluates a specific condition or hypothesis. Example: "The software has a feature that tests that the input data meets the required format before processing."
✓ Grammatically correct
News & Media
Science
Formal & Business
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
2 human-written examples
In the past, it has been how the department has moved to conduct certain types of drug testing — rather than the type of substances for which it tests — that the union has argued is a mandatory subject of collective bargaining.
News & Media
It compares the observed and expected frequencies in each category to test that all categories contain the same proportion of values, or it tests that each category contains a user-specified proportion of values.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
It tested that drug for numerous uses, including herniated disks.
News & Media
The debate reflects a country wrestling within itself at a difficult moment — and it is testing that famous Canadian civility.
News & Media
And it is testing that is a significant tactic in turning back the resilient nature of the disease.
Formal & Business
More likely is that it tests equipment that could be used in spy satellites.
News & Media
It has been difficult to test that idea.
Science & Research
I had no way of testing that, but it sort of makes sense.
News & Media
It is, however, the tests that will attract the most attention.
News & Media
She said colleges should never make an admission decision based solely on test scores, adding, "It's not the test that is the culprit, it's the misuse of tests that is at fault and creates a kind of hysteria".
News & Media
and the reliability of tests that measure it.
News & Media
Expert writing Tips
Best practice
Use "it tests that" when you want to clearly state that a process or system is designed to evaluate a specific condition or hypothesis. For example, "The software tests that all input data is within acceptable ranges before processing".
Common error
Avoid constructing overly passive sentences using "it tests that". Instead, consider making the subject of the sentence more active for clearer and more direct communication. For example, instead of "It tests that the connection is secure", write "The system tests that the connection is secure".
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it tests that" functions as a clause connector, introducing a subordinate clause that specifies the condition or aspect being evaluated. Ludwig AI confirms its correct and usable status.
Frequent in
News & Media
35%
Science
33%
Formal & Business
12%
Less common in
Wiki
5%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "it tests that" is a grammatically correct and commonly used expression for indicating the evaluation of a condition or hypothesis by a system or process. Ludwig AI states that it is usable in written English. Its neutral register makes it suitable for various contexts, particularly in news, science, and formal business settings. When using "it tests that", ensure clarity by avoiding overuse of passive voice and consider alternatives such as ""it verifies that"" or "it assesses whether" for nuanced meanings.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it verifies that
Replaces "tests" with "verifies", emphasizing confirmation of something's truth or accuracy.
it confirms that
Similar to "verifies", but highlights the establishment of something's correctness after initial uncertainty.
it validates that
Highlights the act of proving something to be sound or effective after testing.
it checks that
A more informal way of saying "it tests that", implying a routine inspection.
it assesses whether
Focuses on the evaluation aspect, explicitly mentioning the conditional nature of the assessment.
it evaluates if
Similar to "assesses whether", but using the more concise "if" instead of "whether".
it determines that
Emphasizes the conclusive nature of the testing process, leading to a firm decision or finding.
it investigates whether
Suggests a more in-depth and comprehensive examination.
it examines if
Similar to investigates but with a bit less intensity.
it demonstrates that
Shifts the focus to showing or proving something through the testing process.
FAQs
How can I use "it tests that" in a sentence?
Use "it tests that" to indicate a process or system's function in evaluating a condition or hypothesis. For example, "The script "it tests that" the user input is valid before proceeding".
What are some alternatives to saying "it tests that"?
Alternatives include phrases like "it verifies that", "it checks that", or "it confirms that", depending on the specific nuance you want to convey.
Is there a difference between "it tests that" and "it proves that"?
"It tests that" implies an evaluation or assessment, while "it proves that" suggests a conclusive demonstration of truth. Use "it tests that" when describing a testing process, and "it proves that" when stating a confirmed result.
When should I use "it assesses whether" instead of "it tests that"?
Use "it assesses whether" when the outcome of the evaluation is uncertain, presenting a conditional scenario. "It tests that" is more general and doesn't necessarily imply uncertainty in the expected outcome.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested