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ocrSetValue

website/docs/ocr-testing/ocr-set-value.md

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Send a sequence of key strokes to an element. It will:

  • automatically detect the element
  • put focus on the field by clicking on it
  • set the value in the field

The command will search for the provided text and try to find a match based on Fuzzy Logic from Fuse.js. This means that if you might provide a selector with a typo, or the found text might not be a 100% match it will still try to give you back an element. See the logs below.

Usage

js
await brower.ocrSetValue({
    text: "docs",
    value: "specfileretries",
});

Output

Logs

log
[0-0] 2024-05-26T04:17:51.355Z INFO webdriver: COMMAND ocrSetValue(<object>)
......................
[0-0] 2024-05-26T04:17:52.356Z INFO @wdio/ocr-service:ocrGetElementPositionByText: We searched for the word "docs" and found one match "docs" with score "100%"

Options

text

  • Type: string
  • Mandatory: yes

The text you want to search for to click on.

Example

js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
});

value

  • Type: string
  • Mandatory: yes

Value to be added.

Example

js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
});

submitValue

  • Type: boolean
  • Mandatory: no
  • Default: false

If the value also needs to be submitted into the input field. This means an "ENTER" will be send at the end of the string.

Example

js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    submitValue: true,
});

clickDuration

  • Type: number
  • Mandatory: no
  • Default: 500 milliseconds

This is the duration of the click. If you want you can also create a "long click" by increasing the time.

Example

js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    clickDuration: 3000, // This is 3 seconds
});

contrast

  • Type: number
  • Mandatory: no
  • Default: 0.25

The higher the contrast, the darker the image and vice versa. This can help to find text in an image. It accepts values between -1 and 1.

Example

js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    contrast: 0.5,
});

haystack

  • Type: number
  • Mandatory: WebdriverIO.Element | ChainablePromiseElement | Rectangle

This is the search area in the screen where the OCR needs to look for text. This can be an element or a rectangle containing x, y, width and height

Example

js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    haystack: $("elementSelector"),
});

// OR
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    haystack: await $("elementSelector"),
});

// OR
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    haystack: {
        x: 10,
        y: 50,
        width: 300,
        height: 75,
    },
});

language

  • Type: string
  • Mandatory: No
  • Default: eng

The language that Tesseract will recognize. More info can be found here and the supported languages can be found here.

Example

js
import { SUPPORTED_OCR_LANGUAGES } from "@wdio/ocr-service";
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    // Use Dutch as a language
    language: SUPPORTED_OCR_LANGUAGES.DUTCH,
});

relativePosition

  • Type: object
  • Mandatory: no

You can click on the screen relative to the matching element. This can be done based on relative pixels above, right, below or left from the matching element

:::note

The following combinations are allowed

  • single properties
  • above + left or above + right
  • below + left or below + right

The following combinations are NOT allowed

  • above plus below
  • left plus right

:::

relativePosition.above

  • Type: number
  • Mandatory: no

Click x pixels above the matching element.

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    relativePosition: {
        above: 100,
    },
});

relativePosition.right

  • Type: number
  • Mandatory: no

Click x pixels right from the matching element.

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    relativePosition: {
        right: 100,
    },
});

relativePosition.below

  • Type: number
  • Mandatory: no

Click x pixels below the matching element.

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    relativePosition: {
        below: 100,
    },
});

relativePosition.left

  • Type: number
  • Mandatory: no

Click x pixels left from the matching element.

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    relativePosition: {
        left: 100,
    },
});

fuzzyFindOptions

You can alter the fuzzy logic to find text with the following options. This might help find a better match

fuzzyFindOptions.distance

  • Type: number
  • Mandatory: no
  • Default: 100

Determines how close the match must be to the fuzzy location (specified by location). An exact letter match which is distance characters away from the fuzzy location would score as a complete mismatch. A distance of 0 requires the match to be at the exact location specified. A distance of 1000 would require a perfect match to be within 800 characters of the location to be found using a threshold of 0.8.

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    fuzzyFindOptions: {
        distance: 20,
    },
});

fuzzyFindOptions.location

  • Type: number
  • Mandatory: no
  • Default: 0

Determines approximately where in the text is the pattern expected to be found.

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    fuzzyFindOptions: {
        location: 20,
    },
});

fuzzyFindOptions.threshold

  • Type: number
  • Mandatory: no
  • Default: 0.6

At what point does the matching algorithm give up. A threshold of 0 requires a perfect match (of both letters and location), a threshold of 1.0 would match anything.

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    fuzzyFindOptions: {
        threshold: 0.8,
    },
});

fuzzyFindOptions.isCaseSensitive

  • Type: boolean
  • Mandatory: no
  • Default: false

Whether the search should be case sensitive.

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    fuzzyFindOptions: {
        isCaseSensitive: true,
    },
});

fuzzyFindOptions.minMatchCharLength

  • Type: number
  • Mandatory: no
  • Default: 2

Only the matches whose length exceeds this value will be returned. (For instance, if you want to ignore single character matches in the result, set it to 2)

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    fuzzyFindOptions: {
        minMatchCharLength: 5,
    },
});

fuzzyFindOptions.findAllMatches

  • Type: number
  • Mandatory: no
  • Default: false

When true, the matching function will continue to the end of a search pattern even if a perfect match has already been located in the string.

Example
js
await browser.ocrSetValue({
    text: "WebdriverIO",
    value: "The Value",
    fuzzyFindOptions: {
        findAllMatches: 100,
    },
});