vim-lsp-mirror/test/lsp/internal/diagnostics/under_cursor.vimspec

Describe lsp#internal#diagnostics#under_cursor
    " refer to lsp#test#projectdir('go') . '/documentdiagnostics.go'

    It should not trigger diagnostics when cursor is outside diagnostic range
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 1, 1), {})
    End

    It should trigger diagnostic when cursor is exactly at start position
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        let l:expected = { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 7, 13), l:expected)
    End

    It should not trigger diagnostic when cursor is at line before start position
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 6, 13), {})
    End

    It should not trigger diagnostic when cursor is one character before start position
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 7, 12), {})
    End

    It should trigger diagnostic when cursor is at start column on an intermediate line within range
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        let l:expected = { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 8, 1), l:expected)
    End

    It should trigger diagnostic when cursor is at end column on an intermediate line within range
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        let l:expected = { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 8, 15), l:expected)
    End

    It should trigger diagnostic when cursor is exactly at end position
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        let l:expected = { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 9, 5), l:expected)
    End

    It should not trigger diagnostic when cursor is at line after end position
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 10, 5), {})
    End

    It should not return diagnostic when cursor is one character after end position
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 9, 6), {})
    End

    It should return the closest diagnostic when multiple diagnostics exist across different ranges
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 10, 'line': 4}, 'end': {'character': 7, 'line': 10}} },
            \     { 'range': {'start': {'character': 12, 'line': 6}, 'end': {'character': 5, 'line': 8}} }
            \   ]
        let l:expected = { 'range': {'start': {'character': 10, 'line': 4}, 'end': {'character': 7, 'line': 10}} }
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 7, 3), l:expected)
    End

    It should return the most specific diagnostic when multiple diagnostics overlap at cursor position
        let l:diagnostics = [
            \     { 'range': {'start': {'character': 10, 'line': 4}, 'end': {'character': 15, 'line': 4}} },
            \     { 'range': {'start': {'character': 12, 'line': 4}, 'end': {'character': 14, 'line': 4}} }
            \   ]
        let l:expected = { 'range': {'start': {'character': 12, 'line': 4}, 'end': {'character': 14, 'line': 4}} }
        Assert Equals(lsp#internal#diagnostics#under_cursor#_get_closest_diagnostic(l:diagnostics, 5, 13), l:expected)
    End
End